Add a script to verify macOS package contents

.travis.yml

@@ -90,6 +90,7 @@ script:
  - cd ./build
  - if [ "${COVERITY_SCAN_BRANCH}" != 1 ]; then ${ANALYZE} make -j3; fi
  - if [ "${COVERITY_SCAN_BRANCH}" != 1 ] && [ "${TRAVIS_OS_NAME}" = "osx" ]; then make package; fi
+ - if [ "${COVERITY_SCAN_BRANCH}" != 1 ] && [ "${TRAVIS_OS_NAME}" = "osx" ]; then ../CI/check_package.osx.sh; fi
  - if [ "${COVERITY_SCAN_BRANCH}" != 1 ] && [ "${TRAVIS_OS_NAME}" = "linux" ]; then ./openmw_test_suite; fi
  - if [ "${COVERITY_SCAN_BRANCH}" != 1 ] && [ "${TRAVIS_OS_NAME}" = "linux" ]; then cd .. && ./CI/check_tabs.sh; fi
  - cd "${TRAVIS_BUILD_DIR}"

CI/check_package.osx.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+hdiutil attach ./*.dmg -mountpoint "${TRAVIS_BUILD_DIR}/openmw-package" > /dev/null || echo "hdutil has failed"
+
+EXPECTED_PACKAGE_FILES=('Applications' 'OpenMW-CS.app' 'OpenMW.app')
+PACKAGE_FILES=$(ls "${TRAVIS_BUILD_DIR}/openmw-package" | LC_ALL=C sort)
+
+DIFF=$(diff <(printf "%s\n" "${EXPECTED_PACKAGE_FILES[@]}") <(printf "%s\n" "${PACKAGE_FILES[@]}"))
+DIFF_STATUS=$?
+
+if [[ $DIFF_STATUS -ne 0 ]]; then
+  echo "The package should only contain an Applications symlink and two applications, see the following diff for details." >&2
+  echo "$DIFF" >&2
+  exit 1
+fi