Replace - with _ #16

	name: array-merge-gtest

	# The `workflow_dispatch` lets us manually trigger this action
	# through the GitHub web interface. See
	# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#workflow_dispatch
	# for more details.
	# We probably want to re-run the `array_merge` checks if the
	# definition of `mergesort` changes since this depends on that.
	on:
	push:
	paths:
	- 'array_merge/**'
	- 'mergesort/mergesort.[ch]'
	- '.github/workflows/**'
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Cache gtest library
	uses: actions/cache@v4
	env:
	cache-name: cache-gtest-lib
	with:
	key: $${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('/usr/local/lib/libgtest.a') }}
	path: /usr/local/lib/libgtest.a
	restore-keys: \|
	${{ runner.os }}-build-${{ env.cache-name }}-
	${{ runner.os }}-build-
	${{ runner.os }}-
	- name: Install gtest manually
	run: sudo apt-get install libgtest-dev && cd /usr/src/gtest && sudo cmake CMakeLists.txt && sudo make && sudo cp lib/*.a /usr/lib && sudo ln -s /usr/lib/libgtest.a /usr/local/lib/libgtest.a && sudo ln -s /usr/lib/libgtest_main.a /usr/local/lib/libgtest_main.a
	- name: Check out the code
	uses: actions/checkout@v2
	- name: Compile test code
	run: g++ -Wall -g -o array_merge_test ../mergesort/mergesort.c array_merge.c array_merge_test.cpp -lgtest -pthread -std=c++0x
	working-directory: array_merge
	- name: Run test
	run: ./array_merge_test
	working-directory: array_merge

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