763 lines
23 KiB
Go
763 lines
23 KiB
Go
package influxql_test
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"time"
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"github.com/influxdb/influxdb/influxql"
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)
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// Ensure a value's data type can be retrieved.
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func TestInspectDataType(t *testing.T) {
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for i, tt := range []struct {
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v interface{}
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typ influxql.DataType
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}{
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{float64(100), influxql.Float},
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} {
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if typ := influxql.InspectDataType(tt.v); tt.typ != typ {
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t.Errorf("%d. %v (%s): unexpected type: %s", i, tt.v, tt.typ, typ)
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continue
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}
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}
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}
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// Ensure the SELECT statement can extract substatements.
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func TestSelectStatement_Substatement(t *testing.T) {
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var tests = []struct {
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stmt string
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expr *influxql.VarRef
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sub string
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err string
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}{
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// 0. Single series
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{
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stmt: `SELECT value FROM myseries WHERE value > 1`,
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expr: &influxql.VarRef{Val: "value"},
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sub: `SELECT value FROM myseries WHERE value > 1.000`,
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},
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// 1. Simple join
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{
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stmt: `SELECT sum(aa.value) + sum(bb.value) FROM aa, bb`,
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expr: &influxql.VarRef{Val: "aa.value"},
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sub: `SELECT "aa.value" FROM aa`,
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},
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// 2. Simple merge
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{
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stmt: `SELECT sum(aa.value) + sum(bb.value) FROM aa, bb`,
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expr: &influxql.VarRef{Val: "bb.value"},
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sub: `SELECT "bb.value" FROM bb`,
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},
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// 3. Join with condition
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{
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stmt: `SELECT sum(aa.value) + sum(bb.value) FROM aa, bb WHERE aa.host = 'servera' AND bb.host = 'serverb'`,
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expr: &influxql.VarRef{Val: "bb.value"},
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sub: `SELECT "bb.value" FROM bb WHERE "bb.host" = 'serverb'`,
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},
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// 4. Join with complex condition
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{
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stmt: `SELECT sum(aa.value) + sum(bb.value) FROM aa, bb WHERE aa.host = 'servera' AND (bb.host = 'serverb' OR bb.host = 'serverc') AND 1 = 2`,
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expr: &influxql.VarRef{Val: "bb.value"},
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sub: `SELECT "bb.value" FROM bb WHERE ("bb.host" = 'serverb' OR "bb.host" = 'serverc') AND 1.000 = 2.000`,
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},
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// 5. 4 with different condition order
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{
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stmt: `SELECT sum(aa.value) + sum(bb.value) FROM aa, bb WHERE ((bb.host = 'serverb' OR bb.host = 'serverc') AND aa.host = 'servera') AND 1 = 2`,
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expr: &influxql.VarRef{Val: "bb.value"},
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sub: `SELECT "bb.value" FROM bb WHERE (("bb.host" = 'serverb' OR "bb.host" = 'serverc')) AND 1.000 = 2.000`,
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},
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}
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for i, tt := range tests {
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// Parse statement.
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stmt, err := influxql.NewParser(strings.NewReader(tt.stmt)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", tt.stmt, err)
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}
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// Extract substatement.
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sub, err := stmt.(*influxql.SelectStatement).Substatement(tt.expr)
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if err != nil {
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t.Errorf("%d. %q: unexpected error: %s", i, tt.stmt, err)
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continue
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}
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if substr := sub.String(); tt.sub != substr {
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t.Errorf("%d. %q: unexpected substatement:\n\nexp=%s\n\ngot=%s\n\n", i, tt.stmt, tt.sub, substr)
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continue
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}
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}
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}
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// Ensure the SELECT statement can extract GROUP BY interval.
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func TestSelectStatement_GroupByInterval(t *testing.T) {
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q := "SELECT sum(value) from foo where time < now() GROUP BY time(10m)"
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stmt, err := influxql.NewParser(strings.NewReader(q)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", stmt, err)
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}
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s := stmt.(*influxql.SelectStatement)
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d, err := s.GroupByInterval()
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if d != 10*time.Minute {
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t.Fatalf("group by interval not equal:\nexp=%s\ngot=%s", 10*time.Minute, d)
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}
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if err != nil {
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t.Fatalf("error parsing group by interval: %s", err.Error())
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}
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}
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// Ensure the SELECT statement can have its start and end time set
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func TestSelectStatement_SetTimeRange(t *testing.T) {
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q := "SELECT sum(value) from foo where time < now() GROUP BY time(10m)"
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stmt, err := influxql.NewParser(strings.NewReader(q)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", stmt, err)
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}
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s := stmt.(*influxql.SelectStatement)
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min, max := influxql.TimeRange(s.Condition)
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start := time.Now().Add(-20 * time.Hour).Round(time.Second).UTC()
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end := time.Now().Add(10 * time.Hour).Round(time.Second).UTC()
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s.SetTimeRange(start, end)
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min, max = influxql.TimeRange(s.Condition)
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if min != start {
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t.Fatalf("start time wasn't set properly.\n exp: %s\n got: %s", start, min)
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}
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// the end range is actually one nanosecond before the given one since end is exclusive
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end = end.Add(-time.Nanosecond)
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if max != end {
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t.Fatalf("end time wasn't set properly.\n exp: %s\n got: %s", end, max)
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}
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// ensure we can set a time on a select that already has one set
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start = time.Now().Add(-20 * time.Hour).Round(time.Second).UTC()
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end = time.Now().Add(10 * time.Hour).Round(time.Second).UTC()
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q = fmt.Sprintf("SELECT sum(value) from foo WHERE time >= %ds and time <= %ds GROUP BY time(10m)", start.Unix(), end.Unix())
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stmt, err = influxql.NewParser(strings.NewReader(q)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", stmt, err)
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}
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s = stmt.(*influxql.SelectStatement)
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min, max = influxql.TimeRange(s.Condition)
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if start != min || end != max {
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t.Fatalf("start and end times weren't equal:\n exp: %s\n got: %s\n exp: %s\n got:%s\n", start, min, end, max)
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}
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// update and ensure it saves it
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start = time.Now().Add(-40 * time.Hour).Round(time.Second).UTC()
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end = time.Now().Add(20 * time.Hour).Round(time.Second).UTC()
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s.SetTimeRange(start, end)
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min, max = influxql.TimeRange(s.Condition)
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// TODO: right now the SetTimeRange can't override the start time if it's more recent than what they're trying to set it to.
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// shouldn't matter for our purposes with continuous queries, but fix this later
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if min != start {
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t.Fatalf("start time wasn't set properly.\n exp: %s\n got: %s", start, min)
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}
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// the end range is actually one nanosecond before the given one since end is exclusive
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end = end.Add(-time.Nanosecond)
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if max != end {
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t.Fatalf("end time wasn't set properly.\n exp: %s\n got: %s", end, max)
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}
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// ensure that when we set a time range other where clause conditions are still there
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q = "SELECT sum(value) from foo WHERE foo = 'bar' and time < now() GROUP BY time(10m)"
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stmt, err = influxql.NewParser(strings.NewReader(q)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", stmt, err)
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}
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s = stmt.(*influxql.SelectStatement)
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// update and ensure it saves it
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start = time.Now().Add(-40 * time.Hour).Round(time.Second).UTC()
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end = time.Now().Add(20 * time.Hour).Round(time.Second).UTC()
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s.SetTimeRange(start, end)
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min, max = influxql.TimeRange(s.Condition)
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if min != start {
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t.Fatalf("start time wasn't set properly.\n exp: %s\n got: %s", start, min)
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}
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// the end range is actually one nanosecond before the given one since end is exclusive
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end = end.Add(-time.Nanosecond)
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if max != end {
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t.Fatalf("end time wasn't set properly.\n exp: %s\n got: %s", end, max)
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}
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// ensure the where clause is there
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hasWhere := false
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influxql.WalkFunc(s.Condition, func(n influxql.Node) {
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if ex, ok := n.(*influxql.BinaryExpr); ok {
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if lhs, ok := ex.LHS.(*influxql.VarRef); ok {
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if lhs.Val == "foo" {
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if rhs, ok := ex.RHS.(*influxql.StringLiteral); ok {
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if rhs.Val == "bar" {
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hasWhere = true
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}
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}
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}
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}
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}
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})
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if !hasWhere {
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t.Fatal("set time range cleared out the where clause")
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}
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}
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// Ensure the idents from the select clause can come out
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func TestSelect_NamesInSelect(t *testing.T) {
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s := MustParseSelectStatement("select count(asdf), count(bar) from cpu")
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a := s.NamesInSelect()
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if !reflect.DeepEqual(a, []string{"asdf", "bar"}) {
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t.Fatal("expected names asdf and bar")
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}
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}
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// Ensure the idents from the where clause can come out
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func TestSelect_NamesInWhere(t *testing.T) {
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s := MustParseSelectStatement("select * from cpu where time > 23s AND (asdf = 'jkl' OR (foo = 'bar' AND baz = 'bar'))")
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a := s.NamesInWhere()
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if !reflect.DeepEqual(a, []string{"time", "asdf", "foo", "baz"}) {
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t.Fatalf("exp: time,asdf,foo,baz\ngot: %s\n", strings.Join(a, ","))
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}
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}
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func TestSelectStatement_HasWildcard(t *testing.T) {
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var tests = []struct {
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stmt string
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wildcard bool
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}{
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// No wildcards
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{
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stmt: `SELECT value FROM cpu`,
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wildcard: false,
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},
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// Query wildcard
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{
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stmt: `SELECT * FROM cpu`,
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wildcard: true,
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},
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// No GROUP BY wildcards
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{
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stmt: `SELECT value FROM cpu GROUP BY host`,
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wildcard: false,
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},
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// No GROUP BY wildcards, time only
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{
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stmt: `SELECT mean(value) FROM cpu where time < now() GROUP BY time(5ms)`,
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wildcard: false,
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},
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// GROUP BY wildcard
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{
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stmt: `SELECT value FROM cpu GROUP BY *`,
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wildcard: true,
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},
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// GROUP BY wildcard with time
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{
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stmt: `SELECT mean(value) FROM cpu where time < now() GROUP BY *,time(1m)`,
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wildcard: true,
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},
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// GROUP BY wildcard with explicit
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{
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stmt: `SELECT value FROM cpu GROUP BY *,host`,
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wildcard: true,
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},
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// GROUP BY multiple wildcards
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{
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stmt: `SELECT value FROM cpu GROUP BY *,*`,
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wildcard: true,
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},
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// Combo
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{
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stmt: `SELECT * FROM cpu GROUP BY *`,
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wildcard: true,
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},
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}
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for i, tt := range tests {
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// Parse statement.
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t.Logf("index: %d, statement: %s", i, tt.stmt)
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stmt, err := influxql.NewParser(strings.NewReader(tt.stmt)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", tt.stmt, err)
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}
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// Test wildcard detection.
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if w := stmt.(*influxql.SelectStatement).HasWildcard(); tt.wildcard != w {
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t.Errorf("%d. %q: unexpected wildcard detection:\n\nexp=%v\n\ngot=%v\n\n", i, tt.stmt, tt.wildcard, w)
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continue
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}
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}
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}
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// Test SELECT statement wildcard rewrite.
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func TestSelectStatement_RewriteWildcards(t *testing.T) {
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var fields = influxql.Fields{
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&influxql.Field{Expr: &influxql.VarRef{Val: "value1"}},
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&influxql.Field{Expr: &influxql.VarRef{Val: "value2"}},
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}
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var dimensions = influxql.Dimensions{
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&influxql.Dimension{Expr: &influxql.VarRef{Val: "host"}},
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&influxql.Dimension{Expr: &influxql.VarRef{Val: "region"}},
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}
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var tests = []struct {
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stmt string
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rewrite string
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}{
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// No wildcards
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{
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stmt: `SELECT value FROM cpu`,
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rewrite: `SELECT value FROM cpu`,
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},
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// Query wildcard
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{
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stmt: `SELECT * FROM cpu`,
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rewrite: `SELECT value1, value2 FROM cpu GROUP BY host, region`,
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},
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// Parser fundamentally prohibits multiple query sources
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// Query wildcard with explicit
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// {
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// stmt: `SELECT *,value1 FROM cpu`,
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// rewrite: `SELECT value1, value2, value1 FROM cpu`,
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// },
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// Query multiple wildcards
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// {
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// stmt: `SELECT *,* FROM cpu`,
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// rewrite: `SELECT value1,value2,value1,value2 FROM cpu`,
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// },
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// No GROUP BY wildcards
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{
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stmt: `SELECT value FROM cpu GROUP BY host`,
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rewrite: `SELECT value FROM cpu GROUP BY host`,
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},
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// No GROUP BY wildcards, time only
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{
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stmt: `SELECT mean(value) FROM cpu where time < now() GROUP BY time(5ms)`,
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rewrite: `SELECT mean(value) FROM cpu WHERE time < now() GROUP BY time(5ms)`,
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},
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// GROUP BY wildcard
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{
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stmt: `SELECT value FROM cpu GROUP BY *`,
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rewrite: `SELECT value FROM cpu GROUP BY host, region`,
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},
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// GROUP BY wildcard with time
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{
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stmt: `SELECT mean(value) FROM cpu where time < now() GROUP BY *,time(1m)`,
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rewrite: `SELECT mean(value) FROM cpu WHERE time < now() GROUP BY host, region, time(1m)`,
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},
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// GROUP BY wildarde with fill
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{
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stmt: `SELECT mean(value) FROM cpu where time < now() GROUP BY *,time(1m) fill(0)`,
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rewrite: `SELECT mean(value) FROM cpu WHERE time < now() GROUP BY host, region, time(1m) fill(0)`,
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},
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// GROUP BY wildcard with explicit
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{
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stmt: `SELECT value FROM cpu GROUP BY *,host`,
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rewrite: `SELECT value FROM cpu GROUP BY host, region, host`,
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},
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// GROUP BY multiple wildcards
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{
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stmt: `SELECT value FROM cpu GROUP BY *,*`,
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rewrite: `SELECT value FROM cpu GROUP BY host, region, host, region`,
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},
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// Combo
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{
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stmt: `SELECT * FROM cpu GROUP BY *`,
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rewrite: `SELECT value1, value2 FROM cpu GROUP BY host, region`,
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},
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}
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for i, tt := range tests {
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t.Logf("index: %d, statement: %s", i, tt.stmt)
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// Parse statement.
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stmt, err := influxql.NewParser(strings.NewReader(tt.stmt)).ParseStatement()
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if err != nil {
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t.Fatalf("invalid statement: %q: %s", tt.stmt, err)
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}
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// Rewrite statement.
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rw := stmt.(*influxql.SelectStatement).RewriteWildcards(fields, dimensions)
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if rw == nil {
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t.Errorf("%d. %q: unexpected nil statement", i, tt.stmt)
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continue
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}
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if rw := rw.String(); tt.rewrite != rw {
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t.Errorf("%d. %q: unexpected rewrite:\n\nexp=%s\n\ngot=%s\n\n", i, tt.stmt, tt.rewrite, rw)
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continue
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}
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}
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}
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// Ensure that the IsRawQuery flag gets set properly
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func TestSelectStatement_IsRawQuerySet(t *testing.T) {
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var tests = []struct {
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stmt string
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isRaw bool
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}{
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{
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stmt: "select * from foo",
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isRaw: true,
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},
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{
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stmt: "select value1,value2 from foo",
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isRaw: true,
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},
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{
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stmt: "select value1,value2 from foo, time(10m)",
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isRaw: true,
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},
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{
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stmt: "select mean(value) from foo where time < now() group by time(5m)",
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isRaw: false,
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},
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{
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stmt: "select mean(value) from foo group by bar",
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isRaw: false,
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},
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{
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stmt: "select mean(value) from foo group by *",
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isRaw: false,
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},
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{
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stmt: "select mean(value) from foo group by *",
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isRaw: false,
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},
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}
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for i, tt := range tests {
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t.Logf("index: %d, statement: %s", i, tt.stmt)
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s := MustParseSelectStatement(tt.stmt)
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if s.IsRawQuery != tt.isRaw {
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t.Errorf("'%s', IsRawQuery should be %v", tt.stmt, tt.isRaw)
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}
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}
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}
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// Ensure the time range of an expression can be extracted.
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func TestTimeRange(t *testing.T) {
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for i, tt := range []struct {
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expr string
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min, max string
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}{
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// LHS VarRef
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{expr: `time > '2000-01-01 00:00:00'`, min: `2000-01-01T00:00:00.000000001Z`, max: `0001-01-01T00:00:00Z`},
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{expr: `time >= '2000-01-01 00:00:00'`, min: `2000-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
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{expr: `time < '2000-01-01 00:00:00'`, min: `0001-01-01T00:00:00Z`, max: `1999-12-31T23:59:59.999999999Z`},
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{expr: `time <= '2000-01-01 00:00:00'`, min: `0001-01-01T00:00:00Z`, max: `2000-01-01T00:00:00Z`},
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// RHS VarRef
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{expr: `'2000-01-01 00:00:00' > time`, min: `0001-01-01T00:00:00Z`, max: `1999-12-31T23:59:59.999999999Z`},
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{expr: `'2000-01-01 00:00:00' >= time`, min: `0001-01-01T00:00:00Z`, max: `2000-01-01T00:00:00Z`},
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{expr: `'2000-01-01 00:00:00' < time`, min: `2000-01-01T00:00:00.000000001Z`, max: `0001-01-01T00:00:00Z`},
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{expr: `'2000-01-01 00:00:00' <= time`, min: `2000-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
|
|
|
|
// number literal
|
|
{expr: `time < 10`, min: `0001-01-01T00:00:00Z`, max: `1970-01-01T00:00:00.000000009Z`},
|
|
|
|
// Equality
|
|
{expr: `time = '2000-01-01 00:00:00'`, min: `2000-01-01T00:00:00Z`, max: `2000-01-01T00:00:00Z`},
|
|
|
|
// Multiple time expressions.
|
|
{expr: `time >= '2000-01-01 00:00:00' AND time < '2000-01-02 00:00:00'`, min: `2000-01-01T00:00:00Z`, max: `2000-01-01T23:59:59.999999999Z`},
|
|
|
|
// Min/max crossover
|
|
{expr: `time >= '2000-01-01 00:00:00' AND time <= '1999-01-01 00:00:00'`, min: `2000-01-01T00:00:00Z`, max: `1999-01-01T00:00:00Z`},
|
|
|
|
// Absolute time
|
|
{expr: `time = 1388534400s`, min: `2014-01-01T00:00:00Z`, max: `2014-01-01T00:00:00Z`},
|
|
|
|
// Non-comparative expressions.
|
|
{expr: `time`, min: `0001-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
|
|
{expr: `time + 2`, min: `0001-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
|
|
{expr: `time - '2000-01-01 00:00:00'`, min: `0001-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
|
|
{expr: `time AND '2000-01-01 00:00:00'`, min: `0001-01-01T00:00:00Z`, max: `0001-01-01T00:00:00Z`},
|
|
} {
|
|
// Extract time range.
|
|
expr := MustParseExpr(tt.expr)
|
|
min, max := influxql.TimeRange(expr)
|
|
|
|
// Compare with expected min/max.
|
|
if min := min.Format(time.RFC3339Nano); tt.min != min {
|
|
t.Errorf("%d. %s: unexpected min:\n\nexp=%s\n\ngot=%s\n\n", i, tt.expr, tt.min, min)
|
|
continue
|
|
}
|
|
if max := max.Format(time.RFC3339Nano); tt.max != max {
|
|
t.Errorf("%d. %s: unexpected max:\n\nexp=%s\n\ngot=%s\n\n", i, tt.expr, tt.max, max)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ensure that we see if a where clause has only time limitations
|
|
func TestOnlyTimeExpr(t *testing.T) {
|
|
var tests = []struct {
|
|
stmt string
|
|
exp bool
|
|
}{
|
|
{
|
|
stmt: `SELECT value FROM myseries WHERE value > 1`,
|
|
exp: false,
|
|
},
|
|
{
|
|
stmt: `SELECT value FROM foo WHERE time >= '2000-01-01T00:00:05Z'`,
|
|
exp: true,
|
|
},
|
|
{
|
|
stmt: `SELECT value FROM foo WHERE time >= '2000-01-01T00:00:05Z' AND time < '2000-01-01T00:00:05Z'`,
|
|
exp: true,
|
|
},
|
|
{
|
|
stmt: `SELECT value FROM foo WHERE time >= '2000-01-01T00:00:05Z' AND asdf = 'bar'`,
|
|
exp: false,
|
|
},
|
|
{
|
|
stmt: `SELECT value FROM foo WHERE asdf = 'jkl' AND (time >= '2000-01-01T00:00:05Z' AND time < '2000-01-01T00:00:05Z')`,
|
|
exp: false,
|
|
},
|
|
}
|
|
|
|
for i, tt := range tests {
|
|
// Parse statement.
|
|
stmt, err := influxql.NewParser(strings.NewReader(tt.stmt)).ParseStatement()
|
|
if err != nil {
|
|
t.Fatalf("invalid statement: %q: %s", tt.stmt, err)
|
|
}
|
|
if influxql.OnlyTimeExpr(stmt.(*influxql.SelectStatement).Condition) != tt.exp {
|
|
t.Fatalf("%d. expected statement to return only time dimension to be %t: %s", i, tt.exp, tt.stmt)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ensure an AST node can be rewritten.
|
|
func TestRewrite(t *testing.T) {
|
|
expr := MustParseExpr(`time > 1 OR foo = 2`)
|
|
|
|
// Flip LHS & RHS in all binary expressions.
|
|
act := influxql.RewriteFunc(expr, func(n influxql.Node) influxql.Node {
|
|
switch n := n.(type) {
|
|
case *influxql.BinaryExpr:
|
|
return &influxql.BinaryExpr{Op: n.Op, LHS: n.RHS, RHS: n.LHS}
|
|
default:
|
|
return n
|
|
}
|
|
})
|
|
|
|
// Verify that everything is flipped.
|
|
if act := act.String(); act != `2.000 = foo OR 1.000 > time` {
|
|
t.Fatalf("unexpected result: %s", act)
|
|
}
|
|
}
|
|
|
|
// Ensure that the String() value of a statement is parseable
|
|
func TestParseString(t *testing.T) {
|
|
var tests = []struct {
|
|
stmt string
|
|
}{
|
|
{
|
|
stmt: `SELECT "cpu load" FROM myseries`,
|
|
},
|
|
{
|
|
stmt: `SELECT "cpu load" FROM "my series"`,
|
|
},
|
|
{
|
|
stmt: `SELECT "cpu\"load" FROM myseries`,
|
|
},
|
|
{
|
|
stmt: `SELECT "cpu'load" FROM myseries`,
|
|
},
|
|
{
|
|
stmt: `SELECT "cpu load" FROM "my\"series"`,
|
|
},
|
|
{
|
|
stmt: `SELECT * FROM myseries`,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
// Parse statement.
|
|
stmt, err := influxql.NewParser(strings.NewReader(tt.stmt)).ParseStatement()
|
|
if err != nil {
|
|
t.Fatalf("invalid statement: %q: %s", tt.stmt, err)
|
|
}
|
|
|
|
_, err = influxql.NewParser(strings.NewReader(stmt.String())).ParseStatement()
|
|
if err != nil {
|
|
t.Fatalf("failed to parse string: %v\norig: %v\ngot: %v", err, tt.stmt, stmt.String())
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ensure an expression can be reduced.
|
|
func TestEval(t *testing.T) {
|
|
for i, tt := range []struct {
|
|
in string
|
|
out interface{}
|
|
data map[string]interface{}
|
|
}{
|
|
// Number literals.
|
|
{in: `1 + 2`, out: float64(3)},
|
|
{in: `(foo*2) + ( (4/2) + (3 * 5) - 0.5 )`, out: float64(26.5), data: map[string]interface{}{"foo": float64(5)}},
|
|
{in: `foo / 2`, out: float64(2), data: map[string]interface{}{"foo": float64(4)}},
|
|
{in: `4 = 4`, out: true},
|
|
{in: `4 <> 4`, out: false},
|
|
{in: `6 > 4`, out: true},
|
|
{in: `4 >= 4`, out: true},
|
|
{in: `4 < 6`, out: true},
|
|
{in: `4 <= 4`, out: true},
|
|
{in: `4 AND 5`, out: nil},
|
|
|
|
// Boolean literals.
|
|
{in: `true AND false`, out: false},
|
|
{in: `true OR false`, out: true},
|
|
|
|
// String literals.
|
|
{in: `'foo' = 'bar'`, out: false},
|
|
{in: `'foo' = 'foo'`, out: true},
|
|
|
|
// Variable references.
|
|
{in: `foo`, out: "bar", data: map[string]interface{}{"foo": "bar"}},
|
|
{in: `foo = 'bar'`, out: true, data: map[string]interface{}{"foo": "bar"}},
|
|
{in: `foo = 'bar'`, out: nil, data: map[string]interface{}{"foo": nil}},
|
|
{in: `foo <> 'bar'`, out: true, data: map[string]interface{}{"foo": "xxx"}},
|
|
} {
|
|
// Evaluate expression.
|
|
out := influxql.Eval(MustParseExpr(tt.in), tt.data)
|
|
|
|
// Compare with expected output.
|
|
if !reflect.DeepEqual(tt.out, out) {
|
|
t.Errorf("%d. %s: unexpected output:\n\nexp=%#v\n\ngot=%#v\n\n", i, tt.in, tt.out, out)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ensure an expression can be reduced.
|
|
func TestReduce(t *testing.T) {
|
|
now := mustParseTime("2000-01-01T00:00:00Z")
|
|
|
|
for i, tt := range []struct {
|
|
in string
|
|
out string
|
|
data Valuer
|
|
}{
|
|
// Number literals.
|
|
{in: `1 + 2`, out: `3.000`},
|
|
{in: `(foo*2) + ( (4/2) + (3 * 5) - 0.5 )`, out: `(foo * 2.000) + 16.500`},
|
|
{in: `foo(bar(2 + 3), 4)`, out: `foo(bar(5.000), 4.000)`},
|
|
{in: `4 / 0`, out: `0.000`},
|
|
{in: `4 = 4`, out: `true`},
|
|
{in: `4 <> 4`, out: `false`},
|
|
{in: `6 > 4`, out: `true`},
|
|
{in: `4 >= 4`, out: `true`},
|
|
{in: `4 < 6`, out: `true`},
|
|
{in: `4 <= 4`, out: `true`},
|
|
{in: `4 AND 5`, out: `4.000 AND 5.000`},
|
|
|
|
// Boolean literals.
|
|
{in: `true AND false`, out: `false`},
|
|
{in: `true OR false`, out: `true`},
|
|
{in: `true OR (foo = bar AND 1 > 2)`, out: `true`},
|
|
{in: `(foo = bar AND 1 > 2) OR true`, out: `true`},
|
|
{in: `false OR (foo = bar AND 1 > 2)`, out: `false`},
|
|
{in: `(foo = bar AND 1 > 2) OR false`, out: `false`},
|
|
{in: `true = false`, out: `false`},
|
|
{in: `true <> false`, out: `true`},
|
|
{in: `true + false`, out: `true + false`},
|
|
|
|
// Time literals.
|
|
{in: `now() + 2h`, out: `'2000-01-01T02:00:00Z'`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() / 2h`, out: `'2000-01-01T00:00:00Z' / 2h`, data: map[string]interface{}{"now()": now}},
|
|
{in: `4µ + now()`, out: `'2000-01-01T00:00:00.000004Z'`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() = now()`, out: `true`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() <> now()`, out: `false`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() < now() + 1h`, out: `true`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() <= now() + 1h`, out: `true`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() >= now() - 1h`, out: `true`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() > now() - 1h`, out: `true`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() - (now() - 60s)`, out: `1m`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now() AND now()`, out: `'2000-01-01T00:00:00Z' AND '2000-01-01T00:00:00Z'`, data: map[string]interface{}{"now()": now}},
|
|
{in: `now()`, out: `now()`},
|
|
|
|
// Duration literals.
|
|
{in: `10m + 1h - 60s`, out: `69m`},
|
|
{in: `(10m / 2) * 5`, out: `25m`},
|
|
{in: `60s = 1m`, out: `true`},
|
|
{in: `60s <> 1m`, out: `false`},
|
|
{in: `60s < 1h`, out: `true`},
|
|
{in: `60s <= 1h`, out: `true`},
|
|
{in: `60s > 12s`, out: `true`},
|
|
{in: `60s >= 1m`, out: `true`},
|
|
{in: `60s AND 1m`, out: `1m AND 1m`},
|
|
{in: `60m / 0`, out: `0s`},
|
|
{in: `60m + 50`, out: `1h + 50.000`},
|
|
|
|
// String literals.
|
|
{in: `'foo' + 'bar'`, out: `'foobar'`},
|
|
|
|
// Variable references.
|
|
{in: `foo`, out: `'bar'`, data: map[string]interface{}{"foo": "bar"}},
|
|
{in: `foo = 'bar'`, out: `true`, data: map[string]interface{}{"foo": "bar"}},
|
|
{in: `foo = 'bar'`, out: `false`, data: map[string]interface{}{"foo": nil}},
|
|
{in: `foo <> 'bar'`, out: `false`, data: map[string]interface{}{"foo": nil}},
|
|
} {
|
|
// Fold expression.
|
|
expr := influxql.Reduce(MustParseExpr(tt.in), tt.data)
|
|
|
|
// Compare with expected output.
|
|
if out := expr.String(); tt.out != out {
|
|
t.Errorf("%d. %s: unexpected expr:\n\nexp=%s\n\ngot=%s\n\n", i, tt.in, tt.out, out)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// Valuer represents a simple wrapper around a map to implement the influxql.Valuer interface.
|
|
type Valuer map[string]interface{}
|
|
|
|
// Value returns the value and existence of a key.
|
|
func (o Valuer) Value(key string) (v interface{}, ok bool) {
|
|
v, ok = o[key]
|
|
return
|
|
}
|
|
|
|
// mustParseTime parses an IS0-8601 string. Panic on error.
|
|
func mustParseTime(s string) time.Time {
|
|
t, err := time.Parse(time.RFC3339, s)
|
|
if err != nil {
|
|
panic(err.Error())
|
|
}
|
|
return t
|
|
}
|