Tests for matlab engine installer (#22)

* Add tests

* Add action for running tests

* Fix typo and add comments to indicate expected MATLABVersion and MATLABRelease

* Clarify how MATLAB Release is extracted

---------

Co-authored-by: alexjose <alexjose@MATHWORKS-ITQ2V.local>

Author: alexj0se

.github/workflows/qualify_22b_23a.yml

@@ -0,0 +1,41 @@
+# Run tInstall on Ubuntu against python versions 3.10, 3.9 and 3.8
+
+name: Test R2022b and R2023a
+
+on:
+  push:
+    branches:
+      - R2022b
+      - R2023a
+      - main
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  test-python-engine:
+    strategy:
+      matrix:
+        python: ["3.10", "3.9", "3.8"]
+        matlab: [R2022b, R2023a]
+    
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v3.1.3
+        with:
+           python-version: ${{ matrix.python }}
+      
+      - name: Set up MATLAB
+        uses: matlab-actions/setup-matlab@v1
+        with:
+           release: ${{ matrix.matlab }}
+
+      - uses: actions/checkout@v3
+
+      - name: Run tests
+        uses: matlab-actions/run-tests@v1

test/tInstall.m

@@ -0,0 +1,41 @@
+classdef tInstall < matlab.unittest.TestCase
+% Verify installation of matlab engine
+
+% Copyright 2023 Mathworks, Inc.
+
+    properties (Constant)
+        MATLABVersion = string(ver('MATLAB').Version) % Example: 9.14
+        MATLABRelease = erase(ver('MATLAB').Release,{'(',')'}) % Example: (R2023a) -> R2023a
+    end
+
+    methods (Test)
+        function installNoVersionSpecified(testCase)
+            assumeEqual(testCase, testCase.MATLABRelease, 'R2023a')
+            [status, out] = system("pip install matlabengine");
+            verifyEqual(testCase, status, 0, out)
+            verifyInstallation(testCase)
+        end
+
+        function installMatchingEngine(testCase)
+            [status, out] = system("pip install matlabengine==" + testCase.MATLABVersion + ".*");
+            verifyEqual(testCase, status, 0, out)
+            verifyInstallation(testCase)
+        end
+    end
+
+    methods
+        function verifyInstallation(testCase)
+        % Verify installation by calling functions in matlab engine
+        % Share this session and see if find_matlab can find it.
+            sharedEngineName = string(matlab.engine.engineName);
+            if (sharedEngineName == "")
+                sharedEngineName = "MATLAB_tInstall";
+                matlab.engine.shareEngine(sharedEngineName)
+            end
+            pySharedEngineName = string(py.matlab.engine.find_matlab());
+            verifyEqual(testCase, pySharedEngineName, sharedEngineName)
+            system("pip uninstall -y matlabengine")
+        end
+    end
+end
+