[Ubuntu] Migrate tests to Pester (#2340)

* Add Pester tests

* Fix incorrect merging

* Remove swift test from installing script

* Minor fix

* Remove Haskell tests from commons tests

* Fix selenium test

* Fix SVN test

* Fix pipx tests

* Debug

* Fix pipx packages test

* Skip pipx for 16.04

images/linux/scripts/tests/Common.Tests.ps1

@@ -27,4 +27,22 @@ Describe "PHP" {
     It "Pecl" {
         "pecl" | Should -ReturnZeroExitCode
     }
-}
+}
+
+Describe "Swift" {
+    It "swift" {
+        "swift --version" | Should -ReturnZeroExitCode
+    }
+
+    It "swiftc" {
+        "swiftc --version" | Should -ReturnZeroExitCode
+    }
+}
+
+Describe "PipxPackages" -Skip:(Test-IsUbuntu16) {
+    [array]$testCases = (Get-ToolsetContent).pipx | ForEach-Object { @{cmd = $_.cmd} }
+
+    It "<package>" -TestCases $testCases {
+        "$cmd  --version" | Should -ReturnZeroExitCode
+    }
+}