diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..bac8f53
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,20 @@
+name: build and run tests
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: mkdir
+      run: mkdir build
+    - name: cmake build
+      run: cmake -Bbuild -H.
+    - name: cmake make
+      run: cmake --build build/ --target all
+    # run tests
+    - name: run tests 1
+      run: build/tests/testQRCode
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 2e843b8..b73ea99 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,15 +1,13 @@
 find_package(Threads REQUIRED)
 
-# Enable ExternalProject CMake module
 include(ExternalProject)
 
-# Download and install GoogleTest
 ExternalProject_Add(
   gtest
-  URL https://github.com/google/googletest/archive/refs/heads/main.zip
+  URL https://github.com/google/googletest/archive/refs/tags/release-1.11.0.zip
   PREFIX ${CMAKE_CURRENT_BINARY_DIR}/gtest
-  # Disable install step
   INSTALL_COMMAND ""
+  URL_HASH SHA1=9ffb7b5923f4a8fcdabf2f42c6540cce299f44c0
 )
 
 ExternalProject_Get_Property(gtest source_dir binary_dir)
@@ -22,18 +20,9 @@ set_target_properties(libgtest PROPERTIES
 "IMPORTED_LINK_INTERFACE_LIBRARIES" "${CMAKE_THREAD_LIBS_INIT}"
 )
 
-add_library(libgmock IMPORTED STATIC GLOBAL)
-add_dependencies(libgmock gtest)
-
-set_target_properties(libgmock PROPERTIES
-"IMPORTED_LOCATION" "${binary_dir}/lib/libgmock.a"
-"IMPORTED_LINK_INTERFACE_LIBRARIES" "${CMAKE_THREAD_LIBS_INIT}"
-)
-
-# I couldn't make it work with INTERFACE_INCLUDE_DIRECTORIES
-include_directories("${source_dir}/googletest/include"
-                    "${source_dir}/googlemock/include")
+include_directories("${source_dir}/googletest/include")
 
+# Tests build
 
 file(GLOB SRCS *.cpp)
 
@@ -42,7 +31,6 @@ ADD_EXECUTABLE(testQRCode ${SRCS})
 TARGET_LINK_LIBRARIES(testQRCode
   QRCodeLibrary
   libgtest
-  libgmock
 )
 
 add_test(NAME testQRCode