diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 34ec92b..4d2705f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -60,3 +60,5 @@ jobs:
       run: nuget restore pdfio.sln
     - name: Build PDFio
       run: msbuild pdfio.sln
+    - name: Test PDFio
+      run: .\runtests.bat x64\Debug
diff --git a/runtests.bat b/runtests.bat
new file mode 100644
index 0000000..ff7e87c
--- /dev/null
+++ b/runtests.bat
@@ -0,0 +1,16 @@
+:: Script to run unit test program
+::
+:: Usage:
+::
+::   .\runtests.bat x64\{Debug|Release}
+::
+
+:: Copy dependent DLLs to the named build directory
+echo Copying DLLs
+copy packages\zlib_native.redist.1.2.11\build\native\bin\x64\Debug\*.dll %1
+copy packages\zlib_native.redist.1.2.11\build\native\bin\x64\Release\*.dll %1
+
+:: Run unit test program
+echo Running %1\testpdfio.exe
+cd %1
+testpdfio.exe