added Get-Variable tests

src/pester-tests/Test-Get-Variable.Tests.ps1

@@ -0,0 +1,149 @@
+Describe "Test-Get-Variable" {
+    It "Should be able to call with no parameters without error" {
+        { Get-Variable } | Should Not Throw
+    }
+
+    It "Should return environment variables when called with no parameters" {
+        (Get-Variable).Name -contains "$" | Should Be $true
+        (Get-Variable).Name -contains "?" | Should Be $true
+        (Get-Variable).Name -contains "HOST" | Should Be $true
+        (Get-Variable).Name -contains "PWD" | Should Be $true
+        (Get-Variable).Name -contains "PID" | Should Be $true
+        (Get-Variable).Name -contains "^" | Should Be $true
+    }
+
+    It "Should return the value of an object" {
+        New-Variable -Name tempVar -Value 1
+        (Get-Variable tempVar).Value | Should Be (1)
+    }
+
+    It "Should be able to call using the gv alias" {
+        { gv } | Should Not Throw
+    }
+
+    It "Should be able to call using the Name switch" {
+        New-Variable -Name var1 -Value 4
+
+        { Get-Variable -Name var1 } | Should Not Throw
+
+        (Get-Variable -Name var1).Value | Should Be 4
+
+        Remove-Variable var1
+    }
+
+    It "Should be able to use wildcard characters in the Name field" {
+        New-Variable -Name var1 -Value 4
+        New-Variable -Name var2 -Value "test"
+
+        (Get-Variable -Name var*).Value[0] | Should be 4
+        (Get-Variable -Name var*).Value[1] | Should be "test"
+
+        Remove-Variable var1
+        Remove-Variable var2
+    }
+
+    It "Should return only the value if the value switch is used" {
+        New-Variable -Name var1 -Value 4
+
+        Get-Variable -Name var1 -ValueOnly | Should be 4
+
+        Remove-Variable var1
+    }
+
+    It "Should pipe string to the name field without the Name field being specified"{
+        New-Variable -Name var1 -Value 3
+
+        ("var1" | Get-Variable ).Value | Should Be 3
+
+        Remove-Variable var1
+    }
+
+    It "Should be able to include a set of variables to get" {
+        New-Variable -Name var1 -Value 4
+        New-Variable -Name var2 -Value 2
+
+        $actual = Get-Variable -Include var1, var2
+
+        $actual[0].Name | Should Be var1
+        $actual[1].Name | Should Be var2
+
+        $actual[0].Value | Should Be 4
+        $actual[1].Value | Should Be 2
+
+        Remove-Variable var1
+        Remove-Variable var2
+    }
+
+    It "Should be able to exclude a set of variables to get" {
+        New-Variable -Name var1 -Value 4
+        New-Variable -Name var2 -Value 2
+        New-Variable -Name var3 -Value "test"
+
+        $actual = Get-Variable -Exclude var1, var2
+
+        $actual | Where-Object { $_.Name -eq "var3" } | Should Not BeNullOrEmpty
+    }
+
+Context "Scope Tests" {
+        # This will violate the DRY principle.  Tread softly.
+
+        It "Should be able to get a global scope variable using the global switch" {
+            New-Variable globalVar -Value 1 -Scope global -Force
+
+            (Get-Variable -Name globalVar -Scope global)[0].Value | Should Be 1
+        }
+
+        It "Should not be able to clear a global scope variable using the local switch" {
+            New-Variable globalVar -Value 1 -Scope global -Force
+
+            Get-Variable -Name globalVar -Scope local -ErrorAction SilentlyContinue | Should Throw
+        }
+
+        It "Should be able to get a global variable using the script scope switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope global -Force
+                Get-Variable -Name globalVar -Scope script
+            } | Should Not Throw
+        }
+
+        It "Should be able to get an item locally using the local switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope local -Force
+
+                Get-Variable -Name globalVar -Scope local 
+            } | Should Not Throw
+        }
+
+        It "Should be able to get an item locally using the global switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope local -Force
+
+                Get-Variable -Name globalVar -Scope global
+            } | Should Not Throw
+        }
+
+        It "Should not be able to get a local variable using the script scope switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope local -Force
+
+                Get-Variable -Name globalVar -Scope script
+            } | Should Not Throw
+        }
+
+        It "Should be able to get a script variable created using the script switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope script -Force
+
+                Get-Variable -Name globalVar -Scope script
+            } | Should Not Throw
+        }
+
+        It "Should be able to clear a global script variable that was created using the script scope switch" {
+            {
+                New-Variable globalVar -Value 1 -Scope script -Force
+
+                Get-Variable -Name globalVar -Scope script
+            } | Should Not Throw
+        }
+    }
+}