Merge pull request #4 from drmohundro/feat/add-pester-support

feat: add Pester testing support

.github/workflows/main.yml

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+name: Test Find-String
+
+on: [push, pull_request]
+
+jobs:
+  matrix-test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+    name: Find-String Tests
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+    - name: Run Pester Tests
+      shell: pwsh
+      run: |
+        Invoke-Pester Find-String.Tests.ps1

Find-String.Tests.ps1

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+BeforeAll {
+    Import-Module $PSScriptRoot/Find-String
+}
+
+Describe "Find-String" {
+    Context "Write-Host Out-ColorMatchInfo" {
+        It "MatchInfo Context and Colors" {
+            InModuleScope Find-String {
+                Mock Write-Host { }
+
+                Get-ChildItem -Path TestData | select-string test | Out-ColorMatchInfo
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -match "test.log" -and $ForegroundColor -eq "Green"
+                }
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -eq "2:" -and $noNewLine
+                }
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -eq "this is a " -and $noNewLine
+                }
+
+                Should -Invoke Write-Host -Times 2 -ParameterFilter {
+                    $object -eq "test" -and $ForegroundColor -eq "Black" -and $backgroundColor -eq "Yellow" -and $noNewLine
+                }
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -eq "--"
+                }
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -eq "3:" -and $noNewLine
+                }
+
+                Should -Invoke Write-Host -ParameterFilter {
+                    $object -eq "this is another "
+                }
+            }
+        }
+
+        It "Shouldn't Call Write-Host if PipeOutput is Used" {
+            $results = Get-ChildItem -Path TestData | select-string test | Out-ColorMatchInfo -pipeOutput
+
+            $results.Length | Should -Be 2
+
+            $matchInfoResult = $results[0] -split '\r?\n'
+            $textOutput = $results[1] -split '\r?\n'
+
+            $matchInfoResult[0] | Should -Be ""
+            $matchInfoResult[1] | Should -Match "test.log"
+            $matchInfoResult[2] | Should -Match "2:this is a test"
+            $matchInfoResult[3] | Should -Be ""
+
+            $textOutput[0] | Should -Be ""
+            $textOutput[1] | Should -Match "test.log"
+            $textOutput[2] | Should -Be "2:this is a test"
+            $textOutput[3] | Should -Be "--"
+            $textOutput[4] | Should -Be "3:this is another test"
+            $textOutput[5] | Should -Be ""
+        }
+    }
+}

TestData/test.log

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+first line
+this is a test
+this is another test
+sample data stuff