Pesterでパラメタライズドテストを行うサンプル

Invoke-PesterParameterizedTestSample.ps1

Import-Module Pester

# テスト用の適当な関数
function FizzBuzz([int]$Value) {
    if ($Value -le 0) {
        return "Error!"
    }
    if ($Value % 15 -eq 0) {
        return "FizzBuzz"
    }
    if ($Value % 3 -eq 0) {
        return "Fizz"
    }
    if ($Value % 5 -eq 0) {
        return "Buzz"
    }
    return $Value.ToString()
}

Describe "パラメタライズドテストのサンプル" {
    $testCases = @(
        @{Target = 0; Expected = "Error!"};
        @{Target = 1; Expected = "1"};
        @{Target = 2; Expected = "2"};
        @{Target = 3; Expected = "Fizz"};
        @{Target = 4; Expected = "4"};
        @{Target = 5; Expected = "Buzz"};
        @{Target = 6; Expected = "Fizz"};
        @{Target = 7; Expected = "7"};
        @{Target = 8; Expected = "8"};
        @{Target = 9; Expected = "Fizz"};
        @{Target = 10; Expected = "Buzz"};
        @{Target = 15; Expected = "FizzBuzz"};
    )
    It "FizzBuzz <Target> の結果が <Expected> になること" -TestCases $testCases {
        param($Target, $Expected)
        FizzBuzz $Target | Should Be $Expected
    }
}

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