Merge pull request #1775 from mesonbuild/covupdate

Better coverage report

1 files changed, 79 insertions, 0 deletions

diff --git a/mesonbuild/scripts/coverage.py b/mesonbuild/scripts/coverage.py
new file mode 100644
index 0000000..441ec0c
--- /dev/null
+++ b/mesonbuild/scripts/coverage.py
@@ -0,0 +1,79 @@
+# Copyright 2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from mesonbuild import environment
+
+import sys, os, subprocess
+
+def remove_dir_from_trace(lcov_command, covfile, dirname):
+    tmpfile = covfile + '.tmp'
+    subprocess.check_call([lcov_command, '--remove', covfile, dirname, '-o', tmpfile])
+    os.replace(tmpfile, covfile)
+
+def coverage(source_root, build_root, log_dir):
+    (gcovr_exe, lcov_exe, genhtml_exe) = environment.find_coverage_tools()
+    if gcovr_exe:
+        subprocess.check_call([gcovr_exe,
+                               '-x',
+                               '-r', source_root,
+                               '-o', os.path.join(log_dir, 'coverage.xml'),
+                               ])
+        subprocess.check_call([gcovr_exe,
+                               '-r', source_root,
+                               '-o', os.path.join(log_dir, 'coverage.txt'),
+                               ])
+    if lcov_exe and genhtml_exe:
+        htmloutdir = os.path.join(log_dir, 'coveragereport')
+        covinfo = os.path.join(log_dir, 'coverage.info')
+        initial_tracefile = covinfo + '.initial'
+        run_tracefile = covinfo + '.run'
+        subprocess.check_call([lcov_exe,
+                               '--directory', build_root,
+                               '--capture',
+                               '--initial',
+                               '--output-file',
+                               initial_tracefile])
+        subprocess.check_call([lcov_exe,
+                               '--directory', build_root,
+                               '--capture',
+                               '--output-file', run_tracefile,
+                               '--no-checksum',
+                               '--rc', 'lcov_branch_coverage=1',
+                               ])
+        # Join initial and test results.
+        subprocess.check_call([lcov_exe,
+                               '-a', initial_tracefile,
+                               '-a', run_tracefile,
+                               '-o', covinfo])
+        remove_dir_from_trace(lcov_exe, covinfo, '/usr/include/*')
+        remove_dir_from_trace(lcov_exe, covinfo, '/usr/local/include/*')
+        subprocess.check_call([genhtml_exe,
+                               '--prefix', build_root,
+                               '--output-directory', htmloutdir,
+                               '--title', 'Code coverage',
+                               '--legend',
+                               '--show-details',
+                               '--branch-coverage',
+                               covinfo])
+    return 0
+
+def run(args):
+    if not os.path.isfile('build.ninja'):
+        print('Coverage currently only works with the Ninja backend.')
+        return 1
+    source_root, build_root, log_dir = args[:]
+    return coverage(source_root, build_root, log_dir)
+
+if __name__ == '__main__':
+    sys.exit(run(sys.argv[1:]))