Functions/Assertions/Should.Tests.ps1
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Set-StrictMode -Version Latest InModuleScope Pester { Describe "Parse-ShouldArgs" { It "sanitizes assertions functions" { $parsedArgs = Parse-ShouldArgs TestFunction $parsedArgs.AssertionMethod | Should Be PesterTestFunction } It "works with strict mode when using 'switch' style tests" { Set-StrictMode -Version Latest { throw 'Test' } | Should Throw } Context "for positive assertions" { $parsedArgs = Parse-ShouldArgs testMethod, 1 It "gets the expected value from the 2nd argument" { $ParsedArgs.ExpectedValue | Should Be 1 } It "marks the args as a positive assertion" { $ParsedArgs.PositiveAssertion | Should Be $true } } Context "for negative assertions" { $parsedArgs = Parse-ShouldArgs Not, testMethod, 1 It "gets the expected value from the third argument" { $ParsedArgs.ExpectedValue | Should Be 1 } It "marks the args as a negative assertion" { $ParsedArgs.PositiveAssertion | Should Be $false } } Context "for the throw assertion" { $parsedArgs = Parse-ShouldArgs Throw It "translates the Throw assertion to PesterThrow" { $ParsedArgs.AssertionMethod | Should Be PesterThrow } } } Describe "Get-TestResult" { Context "for positive assertions" { function PesterTest { return $true } $shouldArgs = Parse-ShouldArgs Test It "returns false if the test returns true" { Get-TestResult $shouldArgs | Should Be $false } } Context "for negative assertions" { function PesterTest { return $false } $shouldArgs = Parse-ShouldArgs Not, Test It "returns false if the test returns false" { Get-TestResult $shouldArgs | Should Be $false } } } Describe "Get-FailureMessage" { Context "for positive assertions" { function PesterTestFailureMessage($v, $e) { return "slime $e $v" } $shouldArgs = Parse-ShouldArgs Test, 1 It "should return the postive assertion failure message" { Get-FailureMessage $shouldArgs 2 | Should Be "slime 1 2" } } Context "for negative assertions" { function NotPesterTestFailureMessage($v, $e) { return "not slime $e $v" } $shouldArgs = Parse-ShouldArgs Not, Test, 1 It "should return the negative assertion failure message" { Get-FailureMessage $shouldArgs 2 | Should Be "not slime 1 2" } } } Describe -Tag "Acceptance" "Should" { It "can use the Be assertion" { 1 | Should Be 1 } It "can use the Not Be assertion" { 1 | Should Not Be 2 } It "can use the BeNullOrEmpty assertion" { $null | Should BeNullOrEmpty @() | Should BeNullOrEmpty "" | Should BeNullOrEmpty } It "can use the Not BeNullOrEmpty assertion" { @("foo") | Should Not BeNullOrEmpty "foo" | Should Not BeNullOrEmpty " " | Should Not BeNullOrEmpty @(1,2,3) | Should Not BeNullOrEmpty 12345 | Should Not BeNullOrEmpty $item1 = New-Object PSObject -Property @{Id=1; Name="foo"} $item2 = New-Object PSObject -Property @{Id=2; Name="bar"} @($item1, $item2) | Should Not BeNullOrEmpty } It "can handle exception thrown assertions" { { foo } | Should Throw } It "can handle exception should not be thrown assertions" { { $foo = 1 } | Should Not Throw } It "can handle Exist assertion" { $TestDrive | Should Exist } It "can handle the Match assertion" { "abcd1234" | Should Match "d1" } It "can test for file contents" { Setup -File "test.foo" "expected text" "$TestDrive\test.foo" | Should Contain "expected text" } It "ensures all assertion functions provide failure messages" { $assertionFunctions = @("PesterBe", "PesterThrow", "PesterBeNullOrEmpty", "PesterExist", "PesterMatch", "PesterContain") $assertionFunctions | % { "function:$($_)FailureMessage" | Should Exist "function:Not$($_)FailureMessage" | Should Exist } } # TODO understand the purpose of this test, perhaps some better wording It "can process functions with empty output as input" { function ReturnNothing {} # TODO figure out why this is the case if ($PSVersionTable.PSVersion -eq "2.0") { { $(ReturnNothing) | Should Not BeNullOrEmpty } | Should Not Throw } else { { $(ReturnNothing) | Should Not BeNullOrEmpty } | Should Throw } } } } |