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Version: v5

BeforeAll

SYNOPSIS​

Defines a series of steps to perform at the beginning of the current container, Context or Describe block.

SYNTAX​

BeforeAll [-Scriptblock] <ScriptBlock> [<CommonParameters>]

DESCRIPTION​

BeforeAll is used to share setup among all the tests in a container, Describe or Context including all child blocks and tests. BeforeAll runs during Run phase and runs only once in the current level.

The typical usage is to setup the whole test script, most commonly to import the tested function, by dot-sourcing the script file that contains it.

BeforeAll and AfterAll are unique in that they apply to the entire container, Context or Describe block regardless of the order of the statements compared to other Context or Describe blcoks at the same level.

EXAMPLES​

EXAMPLE 1​

BeforeAll {
    . $PSCommandPath.Replace('.Tests.ps1','.ps1')
}

Describe "API validation" {
    # ...

}

This example uses dot-sourcing in BeforeAll to make functions in the script-file available for the tests.

EXAMPLE 2​

Describe "API validation" {
    BeforeAll {
        # this calls REST API and takes roughly 1 second

        $response = Get-Pokemon -Name Pikachu
    }

    It "response has Name = 'Pikachu'" {
        $response.Name | Should -Be 'Pikachu'
    }

    It "response has Type = 'electric'" {
        $response.Type | Should -Be 'electric'
    }
}

This example uses BeforeAll to perform an expensive operation only once, before validating the results in separate tests.

PARAMETERS​

-Scriptblock​

A scriptblock with steps to be executed during setup.

Type: ScriptBlock
Parameter Sets: (All)
Aliases:

Required: True
Position: 2
Default value: None
Accept pipeline input: False
Accept wildcard characters: False

CommonParameters​

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

INPUTS​

OUTPUTS​

NOTES​

https://pester.dev/docs/commands/BeforeAll

https://pester.dev/docs/usage/setup-and-teardown

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