mplement script to build and prepare packages for Python

tests/python-tests.ps1

@@ -0,0 +1,72 @@
+param (
+    [Version] [Parameter (Mandatory = $true)] [ValidateNotNullOrEmpty()]
+    $Version,
+    [String] [Parameter (Mandatory = $true)] [ValidateNotNullOrEmpty()]
+    $Platform
+)
+
+Import-Module (Join-Path $PSScriptRoot "../helpers/pester-extensions.psm1")
+Import-Module (Join-Path $PSScriptRoot "../helpers/common-helpers.psm1")
+
+function Analyze-MissingModules([string] $buildOutputLocation) {
+    $searchStringStart = "Failed to build these modules:"
+    $searchStringEnd = "running build_scripts"
+    $pattern = "$searchStringStart(.*?)$searchStringEnd"
+
+    $buildContent = Get-Content -Path $buildOutputLocation
+    $splitBuiltOutput = $buildContent -split "\n";
+
+    ### Search for missing modules that are displayed between the search strings
+    $regexMatch = [regex]::match($SplitBuiltOutput, $Pattern)
+    if ($regexMatch.Success)
+    {
+        Write-Host "Failed missing modules:"
+        Write-Host $regexMatch.Groups[1].Value
+        return 1
+    }
+
+    return 0
+}
+
+Describe "Tests" {
+    It "Python version" {
+        "python --version" | Should -ReturnZeroExitCode
+        $pythonLocation = (Get-Command "python").Path
+        $pythonLocation | Should -Not -BeNullOrEmpty
+        $expectedPath = Join-Path -Path $env:AGENT_TOOLSDIRECTORY -ChildPath "Python"
+        $pythonLocation.startsWith($expectedPath) | Should -BeTrue
+    }
+
+    It "Run simple code" {
+        "python ./sources/simple-test.py" | Should -ReturnZeroExitCode
+    }
+
+    if (IsNixPlatform $Platform) {
+
+        It "Check for failed modules in build_output" {
+            $buildOutputLocation = Join-Path $env:BUILD_BINARIESDIRECTORY "build_output.txt"
+            Analyze-MissingModules $buildOutputLocation | Should -Be 0
+        }
+
+        It "Check if all required python modules are installed"  {
+            "python ./sources/python-modules.py" | Should -ReturnZeroExitCode
+        }
+
+        It "Check if python configuration is correct" {
+            "python ./sources/python-config-test.py" | Should -ReturnZeroExitCode
+        }
+
+        It "Check if shared libraries are linked correctly" {
+            "bash ./sources/psutil-install-test.sh" | Should -ReturnZeroExitCode
+        }
+    }
+
+    # Pyinstaller 3.5 does not support Python 3.8.0. Check issue https://github.com/pyinstaller/pyinstaller/issues/4311
+    if ($Version -lt "3.8.0") {
+        It "Validate Pyinstaller" {
+            "pip install pyinstaller" | Should -ReturnZeroExitCode
+            "pyinstaller --onefile ./sources/simple-test.py" | Should -ReturnZeroExitCode
+            "./dist/simple-test" | Should -ReturnZeroExitCode
+        }
+    }
+}