Code Coverage Reports for Xcode Project

Mix and match containing both Objective-C and Swift

This is a sample repository that demonstrates getting the code coverage reports out of Xocde using command line.

See this blog post for more details.

Switching Xcode

If you want to experiment with both Xcode 6 and 7, make sure you switch Xcode version. For temporary effect that applies to current shell session only, use DEVELOPER_DIR environment variable.

# Default
export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer

# Some other
export DEVELOPER_DIR=/Applications/Xcode-beta.app/Contents/Developer

Pre-requisites

Install gcovr and lcov tools.

brew install gcovr lcov

Install custom version of Slather ruby gem.

# Will use Gemfile
bundle install

Scripts

test-gcov.sh

Run test action with proper build settings to enable app instrumentation and generation of coverage data.

If you want to use unit tests scheme, set TESTS_TARGET variable to "YES". This may be useful in advanced setup where you want to redefine TEST_HOST build setting as well.

# Run tests using Test action of default target
./test-gcov.sh

# Run tests using Test action of
TESTS_TARGET=YES ./test-gcov.sh

gcovr.sh

This script will use gcovr tool to collect test coverage information from build directory and output it as Cobertura-compatible coverage report XML named gcov-report.xml.

lcov.sh

This script will use lcov utility to collect test coverage information and output it as HTML report.

test-profdata.sh

This script will run the tests using new -enableCodeCoverage option of xcodebuild. Requires Xcode 7 or newer.

slather.sh

Collect code coverage data in Profdata format and convert to gcov format (Cobertura-compatible). Output is saved to slather-report folder.