added ConvertFrom-Csv tests

src/pester-tests/ConvertFrom-Csv.Tests.ps1

@@ -0,0 +1,27 @@
+Describe "ConvertFrom-Csv" {
+    $testObject = "a", "1"
+    $testDelimiter = "a; b"
+    $testColumns = @"
+    a,b,c
+    1,2,3
+"@
+    It "Should be able to be called" {
+        { ConvertFrom-Csv -InputObject $testObject } | Should Not Throw
+    }
+
+    It "Should be able to pipe" {
+        { $testObject | ConvertFrom-Csv } | Should Not Throw
+    }
+
+    It "Should be able to set a delimiter" {
+        { $testDelimiter | ConvertFrom-Csv -Delimiter ";" } | Should Not Throw
+    }
+
+    It "Should be able to have multiple columns" {
+        $actualData   = $testColumns | ConvertFrom-Csv
+        
+        $actualLength = $($( $actualData | gm) | Where-Object {$_.MemberType -eq "NoteProperty" }).Length
+
+        $actualLength | Should Be 3
+    }
+}