added code review changes

src/pester-tests/Test-Split-Path.Tests.ps1

@@ -1,15 +1,8 @@
 Describe "Test-Split-Path" {
-<#
-    Dependencies:
+    $testDir                = "/tmp"
+    $testfile               = "testfile.ps1"
+    $FullyQualifiedTestFile = $testDir + "/" + $testFile
 
-    1. Split-Path - FUT
-    2. ForEach
-    3. Object piping
-    4. ls/Get-ChildItem - filter output of ls
-
-    parent and Literal 
-
-#>
     It "Should return a string object when invoked" {
         ( Split-Path . ).GetType().Name          | Should Be "String"
         ( Split-Path . -Leaf ).GetType().Name    | Should Be "String"
@@ -22,6 +15,9 @@
     }
 
     It "Should error when using the qualifier switch for a windows path while on a nonwindows machine" {
+        # ErrorAction SilentlyContinue merely suppresses the error from the console.
+        # Throwing exceptions still seen by Pester.
+
          Split-Path "C:\Users" -Qualifier -ErrorAction SilentlyContinue  | Should Throw
     }
 
@@ -31,7 +27,7 @@
 
     It "Should return the path when the noqualifier switch is used on a linux system" { 
         { Split-Path /usr/bin -NoQualifier } | Should Not Throw
-        Split-Path /usr/bin -NoQualifier | Should Be "/usr/bin"
+        Split-Path /usr/bin -NoQualifier     | Should Be "/usr/bin"
     }
 
     It "Should return the parent folder name when the leaf switch is used" {
@@ -39,12 +35,32 @@
     }
 
     It "Should be able to accept regular expression input and output an array for multiple objects" {
-        ( Split-Path *Get*.ps1 -Leaf -Resolve ).GetType().BaseType.Name | Should Be "Array"
+        $testfile2               = "testfilenumber2.ps1"
+        $FullyQualifiedTestFile2 = $testDir + "/" + $testfile2
+
+        New-Item -ItemType file -Path $FullyQualifiedTestFile, $FullyQualifiedTestFile2
+
+        Test-Path $FullyQualifiedTestFile  | Should Be $true
+        Test-Path $FullyQualifiedTestFile2 | Should Be $true
+
+        ( Split-Path /tmp/*estf*.ps1 -Leaf -Resolve ).GetType().BaseType.Name | Should Be "Array"
+        ( Split-path /tmp/*estf*.ps1 -Leaf -Resolve )[0]                      | Should Be $testfile
+        ( Split-path /tmp/*estf*.ps1 -Leaf -Resolve )[1]                      | Should Be $testfile2
+
+        Remove-Item $FullyQualifiedTestFile, $FullyQualifiedTestFile2
     }
 
     It "Should be able to tell if a given path is an absolute path" {
         ( Split-Path /usr/bin -IsAbsolute ) | Should be $true
+        ( Split-Path .. -IsAbsolute )       | Should be $false
+        ( Split-Path /usr/.. -IsAbsolute )  | Should be $true
+        ( Split-Path /usr/../ -IsAbsolute ) | Should be $true
+        ( Split-Path ../ -IsAbsolute )      | Should be $false
         ( Split-Path . -IsAbsolute )        | Should be $false
+        ( Split-Path ~/ -IsAbsolute )       | Should be $false
+        ( Split-Path ~/.. -IsAbsolute )     | Should be $false
+        ( Split-Path ~/../.. -IsAbsolute )  | Should be $false
+
     }
 
     It "Should support piping" {
@@ -52,15 +68,11 @@
     }
 
     It "Should return the path up to the parent of the directory when Parent switch is used" {
-        Split-Path "/usr/bin" -Parent | Should Be ( Split-Path "/usr/bin" -Parent )
-    }
-
-    It "Should not throw if a parameterSetName is correct" {
-        { Split-Path "/usr/bin/" -Parent } | Should Not Throw
+        Split-Path "/usr/bin" -Parent | Should Be "/usr"
     }
 
     It "Should throw if a parameterSetName is incorrect" {
-        { Split-Path "/usr/bin/" -Parentaoeu } | Should Throw
+        { Split-Path "/usr/bin/" -Parentaoeu } | Should Throw "A parameter cannot be found that matches parameter name"
     }
 
 }