1 # SPDX-License-Identifier: GPL-2.0+
3 # Copyright (c) 2016 Google, Inc
6 from __future__ import print_function
8 from contextlib import contextmanager
16 from StringIO import StringIO
18 from io import StringIO
20 PYTHON = 'python%d' % sys.version_info[0]
23 def RunTestCoverage(prog, filter_fname, exclude_list, build_dir, required=None):
24 """Run tests and check that we get 100% coverage
27 prog: Program to run (with be passed a '-t' argument to run tests
28 filter_fname: Normally all *.py files in the program's directory will
29 be included. If this is not None, then it is used to filter the
30 list so that only filenames that don't contain filter_fname are
32 exclude_list: List of file patterns to exclude from the coverage
34 build_dir: Build directory, used to locate libfdt.py
35 required: List of modules which must be in the coverage report
38 ValueError if the code coverage is not 100%
40 # This uses the build output from sandbox_spl to get _libfdt.so
41 path = os.path.dirname(prog)
43 glob_list = glob.glob(os.path.join(path, '*.py'))
44 glob_list = [fname for fname in glob_list if filter_fname in fname]
47 glob_list += exclude_list
48 glob_list += ['*libfdt.py', '*site-packages*', '*dist-packages*']
49 test_cmd = 'test' if 'binman.py' in prog else '-t'
50 cmd = ('PYTHONPATH=$PYTHONPATH:%s/sandbox_spl/tools %s-coverage run '
51 '--omit "%s" %s %s -P1' % (build_dir, PYTHON, ','.join(glob_list),
54 stdout = command.Output('%s-coverage' % PYTHON, 'report')
55 lines = stdout.splitlines()
57 # Convert '/path/to/name.py' just the module name 'name'
58 test_set = set([os.path.splitext(os.path.basename(line.split()[0]))[0]
59 for line in lines if '/etype/' in line])
60 missing_list = required
61 missing_list.discard('__init__')
62 missing_list.difference_update(test_set)
64 print('Missing tests for %s' % (', '.join(missing_list)))
68 coverage = lines[-1].split(' ')[-1]
71 if coverage != '100%':
73 print("Type '%s-coverage html' to get a report in "
74 'htmlcov/index.html' % PYTHON)
75 print('Coverage error: %s, but should be 100%%' % coverage)
78 raise ValueError('Test coverage failure')
81 # Use this to suppress stdout/stderr output:
82 # with capture_sys_output() as (stdout, stderr)
85 def capture_sys_output():
86 capture_out, capture_err = StringIO(), StringIO()
87 old_out, old_err = sys.stdout, sys.stderr
89 sys.stdout, sys.stderr = capture_out, capture_err
90 yield capture_out, capture_err
92 sys.stdout, sys.stderr = old_out, old_err