Added Test-Ola scripts

Author: SQLDBAWithABeard

Diff for: Get-DriveSize.Tests.ps1

@@ -0,0 +1,110 @@
+$Here = Split-Path -Parent $MyInvocation.MyCommand.Path
+$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path).Replace('.Tests.', '.')
+. "$here\$sut"
+"$here\$sut"
+Import-Module PSScriptAnalyzer
+$Rules = Get-ScriptAnalyzerRule
+$Name = $sut.Split('.')[0]
+
+    Describe 'Script Analyzer Tests' {
+            Context 'Testing $sut for Standard Processing' {
+                foreach ($rule in $rules.Where{$_.RuleName -ne 'PSAvoidUsingWMICmdlet'}) { 
+                    $i = $rules.IndexOf($rule)
+                    It "passes the PSScriptAnalyzer Rule number $i - $rule  " {
+                        (Invoke-ScriptAnalyzer -Path "$here\$sut" -IncludeRule $rule.RuleName ).Count | Should Be 0 
+                    }
+                }
+            }
+        }
+    Describe 'Tests For Help' {
+    # The module-qualified command fails on Microsoft.PowerShell.Archive cmdlets 
+$Help = Get-Help $Name -ErrorAction SilentlyContinue 
+
+# If help is not found, synopsis in auto-generated help is the syntax diagram 
+It "should not be auto-generated" { 
+	$Help.Synopsis | Should Not Match '*[<CommonParameters>]*' 
+} 
+ 
+# Should be a description for every function 
+It "gets description for $Name" { 
+	$Help.Description | Should Not BeNullOrEmpty 
+} 
+ 
+# Should be at least one example 
+It "gets example code from $Name" { 
+	($Help.Examples.Example | Select-Object -First 1).Code | Should Not BeNullOrEmpty 
+} 
+ 
+# Should be at least one example description 
+It "gets example help from $Name" { 
+	($Help.Examples.Example.Remarks | Select-Object -First 1).Text | Should Not BeNullOrEmpty 
+} 
+ 
+Context "Test parameter help for $Name" { 
+	 
+	$Common = 'Debug', 'ErrorAction', 'ErrorVariable', 'InformationAction', 'InformationVariable', 'OutBuffer', 'OutVariable', 
+	'PipelineVariable', 'Verbose', 'WarningAction', 'WarningVariable' 
+	$command = Get-Command $name
+	$parameters = $command.ParameterSets.Parameters | Sort-Object -Property Name -Unique | Where-Object { $_.Name -notin $common } 
+	$parameterNames = $parameters.Name 
+	$HelpParameterNames = $Help.Parameters.Parameter.Name | Sort-Object -Unique 
+	 
+	foreach ($parameter in $parameters) 
+	{ 
+		$parameterName = $parameter.Name 
+		$parameterHelp = $Help.parameters.parameter | Where-Object Name -EQ $parameterName 
+		 
+		# Should be a description for every parameter 
+		It "gets help for parameter: $parameterName : in $Name" { 
+			$parameterHelp.Description.Text | Should Not BeNullOrEmpty 
+		} 
+		 
+		# Required value in Help should match IsMandatory property of parameter 
+		It "help for $parameterName parameter in $Name has correct Mandatory value" { 
+			$codeMandatory = $parameter.IsMandatory.toString() 
+			$parameterHelp.Required | Should Be $codeMandatory 
+			} 
+			 
+			# Parameter type in Help should match code 
+			It "help for $Name has correct parameter type for $parameterName" { 
+				$codeType = $parameter.ParameterType.Name 
+				# To avoid calling Trim method on a null object. 
+				$helpType = if ($parameterHelp.parameterValue) { $parameterHelp.parameterValue.Trim() } 
+				$helpType | Should be $codeType 
+			} 
+		} 
+		 
+		foreach ($helpParm in $HelpParameterNames) 
+		{ 
+			# Shouldn't find extra parameters in help. 
+			It "finds help parameter in code: $helpParm" { 
+				$helpParm -in $parameterNames | Should Be $true 
+			} 
+		} 
+	} 
+} 
+    Describe "$Name Tests"{
+              Context 'Function' {
+              BeforeAll {
+              $Name= Get-Command $Name
+              }
+              It 'Has Cmdlet Binding set to true' {
+              $Name.CmdletBinding |should Be True
+              }
+              It 'Has a Server Parameter'{
+              ($Name.Parameters['Server']) | Should Be $true
+              }
+              It 'Server Parameter shoud be a string' {
+              $Name.Parameters['Server'].ParameterType | Should Be String
+              }
+              It 'Server Parameter should default to $Env:COMPUTERNAME' {
+              # $Name.Parameters['Server']
+              }
+             
+              }
+              Context 'Output' {
+              It 'Should Output The Drive Letters' {
+              
+              }
+              }
+    }