SHOW MEASUREMENTS integration tests

cmd/influxd/run/server_test.go

@@ -2474,3 +2474,68 @@ func TestServer_Query_ShowSeries(t *testing.T) {
 		}
 	}
 }
+
+func TestServer_Query_ShowMeasurements(t *testing.T) {
+	t.Parallel()
+	s := OpenServer(NewConfig(), "")
+	defer s.Close()
+
+	if err := s.CreateDatabaseAndRetentionPolicy("db0", newRetentionPolicyInfo("rp0", 1, 0)); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.MetaStore.SetDefaultRetentionPolicy("db0", "rp0"); err != nil {
+		t.Fatal(err)
+	}
+
+	writes := []string{
+		fmt.Sprintf(`cpu,host=server01 value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`cpu,host=server01,region=uswest value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`cpu,host=server01,region=useast value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`cpu,host=server02,region=useast value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`gpu,host=server02,region=useast value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`gpu,host=server02,region=caeast value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+		fmt.Sprintf(`other,host=server03,region=caeast value=100 %d`, mustParseTime(time.RFC3339Nano, "2009-11-10T23:00:00Z").UnixNano()),
+	}
+
+	test := NewTest("db0", "rp0")
+	test.write = strings.Join(writes, "\n")
+	log.Println("", test.write)
+
+	test.addQueries([]*Query{
+		&Query{
+			name:    `show measurements with limit 2`,
+			command: "SHOW MEASUREMENTS LIMIT 2",
+			exp:     `{"results":[{"series":[{"name":"measurements","columns":["name"],"values":[["cpu"],["gpu"]]}]}]}`,
+			params:  url.Values{"db": []string{"db0"}},
+		},
+		&Query{
+			name:    `show measurements where tag matches regular expresion`,
+			command: "SHOW MEASUREMENTS WHERE region =~ /ca.*/",
+			exp:     `{"results":[{"series":[{"name":"measurements","columns":["name"],"values":[["gpu"],["other"]]}]}]}`,
+			params:  url.Values{"db": []string{"db0"}},
+		},
+		&Query{
+			name:    `show measurements where tag does not match a regular expresion`,
+			command: "SHOW MEASUREMENTS WHERE region !~ /ca.*/",
+			exp:     `{"results":[{"series":[{"name":"measurements","columns":["name"],"values":[["cpu"]]}]}]}`,
+			params:  url.Values{"db": []string{"db0"}},
+		},
+	}...)
+
+	for i, query := range test.queries {
+		if i == 0 {
+			if err := test.init(s); err != nil {
+				t.Fatalf("test init failed: %s", err)
+			}
+		}
+		if query.skip {
+			t.Logf("SKIP:: %s", query.name)
+			continue
+		}
+		if err := query.Execute(s); err != nil {
+			t.Error(query.Error(err))
+		} else if !query.success() {
+			t.Error(query.failureMessage())
+		}
+	}
+}