74 lines
1.4 KiB
Markdown
74 lines
1.4 KiB
Markdown
---
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title: testing.assertEquals() function
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description: The testing.assertEquals() function tests whether two streams have identical data.
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aliases:
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- /v2.0/reference/flux/functions/tests/assertequals
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menu:
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v2_0_ref:
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name: testing.assertEquals
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parent: Testing
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weight: 301
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---
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The `testing.assertEquals()` function tests whether two streams have identical data.
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If equal, the function outputs the tested data stream unchanged.
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If unequal, the function returns an error.
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```js
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import "testing"
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testing.assertEquals(
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name: "streamEquality",
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got: got,
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want: want
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)
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```
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_The `testing.assertEquals()` function can be used to perform in-line tests in a query._
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## Parameters
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### name
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Unique name given to the assertion.
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_**Data type:** String_
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### got
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The stream containing data to test.
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Defaults to piped-forward data (`<-`).
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_**Data type:** Object_
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### want
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The stream that contains the expected data to test against.
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_**Data type:** Object_
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## Examples
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##### Assert of separate streams
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```js
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import "testing"
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want = from(bucket: "backup-telegraf/autogen")
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|> range(start: -5m)
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got = from(bucket: "telegraf/autogen")
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|> range(start: -5m)
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testing.assertEquals(got: got, want: want)
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```
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##### Inline assertion
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```js
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import "testing"
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want = from(bucket: "backup-telegraf/autogen")
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|> range(start: -5m)
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from(bucket: "telegraf/autogen")
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|> range(start: -5m)
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|> testing.assertEquals(want: want)
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```
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