Add MATLAB unit tests and update build process for Windows

Updated `build.yml` to include steps for running MATLAB unit tests on Windows runners:
- Copy `MEXlibCZI.mexw64` to `tests/MATLAB` if it exists.
- Run MATLAB tests using `matlab-actions/run-command@v2`.

Added `TestMEXlibCZI_Basic_Operation` class in `TestMEXlibCZI_Basic_Operation.m`:
- `testGetVersion_VersionString`: Verifies `VersionString`.
- `testGetVersion_libCZIVersion`: Verifies `libCZIVersion`.
- `testGetVersion_CompilerIdentification`: Verifies `CompilerIdentification`.

Defined `checkVersionString` function to validate version strings.

.github/workflows/build.yml

@@ -51,6 +51,19 @@ jobs:
           cd build
           cmake .. -DCMAKE_BUILD_TYPE=Release 
           cmake --build . --config Release -j
+      - name: Prepare MATLAB unit tests
+        if: runner.os == 'Windows'
+        shell: bash
+        run: |
+          # if on Windows, then this is the mex-file we need to copy to the tests/MATLAB folder
+          if [ -f "build/MEXlibCZI/Release/MEXlibCZI.mexw64" ]; then
+            cp "build/MEXlibCZI/Release/MEXlibCZI.mexw64" tests/MATLAB/
+          fi
+      - name: Run statements
+        if: runner.os == 'Windows'
+        uses: matlab-actions/run-command@v2
+        with:
+          command: cd tests/MATLAB; results = runtests, assertSuccess(results);
       - name: Prepare MATLAB artifact (Linux)
         id: prepare_linux_matlab_artifact
         if: runner.os == 'Linux'

tests/MATLAB/TestMEXlibCZI_Basic_Operation.m

@@ -0,0 +1,31 @@
+% File: test_basic_operation.m
+classdef TestMEXlibCZI_Basic_Operation < matlab.unittest.TestCase
+
+    methods (Test)
+        function testGetVersion_VersionString(testCase)
+            version = MEXlibCZI('GetVersion');
+            testCase.verifyTrue(checkVersionString(version.VersionString));
+        end
+
+        function testGetVersion_libCZIVersion(testCase)
+            version = MEXlibCZI('GetVersion');
+            testCase.verifyTrue(checkVersionString(version.libCZIVersion));
+        end
+
+        function testGetVersion_CompilerIdentification(testCase)
+            version = MEXlibCZI('GetVersion');
+            testCase.verifyTrue(~isempty(version.CompilerIdentification));
+        end
+    end
+end
+
+% Local function outside of the class definition
+function result = checkVersionString(versionString)
+    % Check if the VersionString starts with '0.3.0'
+    match = regexp(versionString, '^\d{1,3}\.\d{1,3}\.\d{1,3}', 'once');
+    if isempty(match)
+        result = false; % No match found, return false
+    else
+        result = true;  % Match found, return true
+    end
+end