fix naming consitency (case mostly)

CI/Test-SingleFunctions.ps1

@@ -0,0 +1,44 @@
+
+Function Test-SingleFunction {
+    param (
+    [parameter(ValueFromPipeline=$true)]
+    $path ) 
+    begin {
+        Push-Location "C:\Users\mcp\Documents\GitHub\ImportExcel"
+        $exportedFunctions = (Import-LocalizedData -FileName "ImportExcel.psd1").functionsToExport
+        Pop-Location
+        $reg  = [Regex]::new(@"
+          function\s*[-\w]+\s*{ # The function name and opening '{' 
+            (?:                 
+            [^{}]+                  # Match all non-braces
+            |
+            (?<open>  { )           # Match '{', and capture into 'open'
+            |
+            (?<-open> } )           # Match '}', and delete the 'open' capture
+            )*
+            (?(open)(?!))           # Fails if 'open' stack isn't empty
+          }                         # Functions closing '}'
+"@, 33)  # 33 = ignore case and white space.
+       
+        
+    }#
+    process {
+        $item = Get-item $Path
+        $name = $item.Name -replace "\.\w+$",""
+        Write-Verbose $name
+        $file = Get-Content $item -Raw
+        $m    = $reg.Matches($file) 
+        
+   
+        #based on https://stackoverflow.com/questions/7898310/using-regex-to-balance-match-parenthesis 
+        if     ($m.Count -eq 0)                         {return "Could not find $name function in $($item.name)"}
+        elseif ($m.Count -ge 2)                         {return "Multiple functions in $($item.name)"}
+        elseif ($exportedFunctions -cnotcontains $name) {return "$name not exported (or in the wrong case)"}
+        elseif ($m[0] -cnotmatch "^\w+\s+$name")        {return "function $name in wrong case"} 
+        elseif ($m[0] -inotmatch "^function\s*$name\s*{(\s*<\#.*?\#>|\s*\[.*?\])*\s*param") {return "No param block in $name"}
+        elseif ($m[0] -inotmatch "\[cmdletbinding\(" -and
+                $m[0] -inotmatch "\[parameter\("   )    {return "$name has is not an advanced function"}
+        elseif (-not (& $Name -?).synopsis)             {return "$name has no help"}
+        else   {return "$name OK"}
+    }
+}