Merge pull request 109 from dev/153-format-list-tests into develop

src/pester-tests/Test-Format-List.Tests.ps1

@@ -0,0 +1,73 @@
+Describe "Test-Format-List" {
+    BeforeEach {
+        $input = New-Object PSObject
+        Add-Member -InputObject $input -MemberType NoteProperty -Name testName -Value testValue
+    }
+
+    It "Should call format list without error" {
+        { $input | Format-List } | Should Not Throw
+        { $input | Format-List } | Should Not BeNullOrEmpty
+    }
+
+    It "Should be able to call the alias" {
+        { $input | fl } | Should Not Throw
+        { $input | fl } | Should Not BeNullOrEmpty
+    }
+
+    It "Should have the same output whether choosing alias or not" {
+        $expected = $input | Format-List | Out-String
+        $actual   = $input | fl          | Out-String
+
+        $actual | Should Be $expected
+    }
+
+    It "Should produce the expected output" {
+        $expected = "`n`ntestName : testValue`n`n`n`n"
+        $input = New-Object PSObject
+        Add-Member -InputObject $input -MemberType NoteProperty -Name testName -Value testValue
+
+        $input | Format-List                  | Should Not BeNullOrEmpty
+        $input | Format-List   | Out-String   | Should Not BeNullOrEmpty
+        $input | Format-List   | Out-String   | Should Be $expected
+    }
+
+    It "Should be able to call a property of the piped input" {
+        # Tested on two input commands to verify functionality.
+        { Get-Process | Format-List -Property Name }        | Should Not Throw
+        { Get-Process | Format-List -Property Name }        | Should Not BeNullOrEmpty
+
+        { Get-Date    | Format-List -Property DisplayName } | Should Not Throw
+        { Get-Date    | Format-List -Property DisplayName } | Should Not BeNullOrEmpty
+    }
+
+    It "Should be able to display a list of props when separated by a comma" {
+        { Get-Process | Format-List -Property Name,BasePriority } | Should Not Throw
+
+        (Get-Process | Format-List -Property Name,BasePriority | Out-String) -Split "`n" |
+          Where-Object { $_.trim() -ne "" } |
+          ForEach-Object { $_ | Should Match "(Name)|(BasePriority)" }
+    }
+
+    It "Should show the requested prop in every element" {
+        # Testing each element of format-list, using a for-each loop since the Format-List is so opaque
+        (Get-Process | Format-List -Property CPU | Out-String) -Split "`n" |
+          Where-Object { $_.trim() -ne "" } |
+          ForEach-Object { $_ | Should Match "CPU :" }
+    }
+
+    It "Should not show anything other than the requested props" {
+        $output = Get-Process | Format-List -Property Name | Out-String
+
+        $output | Should Not Match "CPU :"
+        $output | Should Not Match "Id :"
+        $output | Should Not Match "Handle :"
+    }
+
+    It "Should be able to take input without piping objects to it" {
+        $output = { Format-List -InputObject $input }
+
+        $output | Should Not Throw
+        $output | Should Not BeNullOrEmpty
+
+    }
+}