Add test helper module

Author: Kapil Borle

Tests/PSScriptAnalyzerTestHelper.psm1

@@ -0,0 +1,38 @@
+Function Get-ExtentText
+{
+	Param(
+	[Microsoft.Windows.PowerShell.ScriptAnalyzer.Generic.CorrectionExtent] $violation,
+	[string] $scriptPath
+	)
+	$scriptContent = Get-Content -Path $scriptPath
+	$typeScriptPos = 'System.Management.Automation.Language.ScriptPosition'
+	$start = New-Object -TypeName $typeScriptPos -ArgumentList @($scriptPath, $violation.StartLineNumber, $violation.StartColumnNumber, $scriptContent[$violation.StartLineNumber - 1])
+	$end = New-Object -TypeName $typeScriptPos -ArgumentList @($scriptPath, $violation.EndLineNumber, $violation.EndColumnNumber, $scriptContent[$violation.EndLineNumber - 1])
+	$extent = New-Object -TypeName 'System.Management.Automation.Language.ScriptExtent' -ArgumentList @($start, $end)
+	return($extent.Text)
+}
+
+Function Test-CorrectionExtent
+{
+	Param(
+		[string] $violationFilepath,
+		[Microsoft.Windows.PowerShell.ScriptAnalyzer.Generic.DiagnosticRecord] $diagnosticRecord,
+		[int] $correctionsCount,
+		[string] $violationText,
+		[string] $correctionText
+	)
+	$corrections = $diagnosticRecord.SuggestedCorrections
+	$corrections.Count | Should Be $correctionsCount
+	$corrections[0].Text | Should Be $correctionText
+	Get-ExtentText $corrections[0] $violationFilepath | `
+		       Should Be $violationText
+}
+
+Function Test-PSEditionCoreCLR
+{
+    ($PSVersionTable.Keys -contains "PSEdition") -and ($PSVersionTable.PSEdition -ne 'Desktop')
+}
+
+Export-ModuleMember -Function Get-ExtentText
+Export-ModuleMember -Function Test-CorrectionExtent
+Export-ModuleMember -Function Test-PSEditionCoreCLR