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
21 def RunTestCoverage(prog, filter_fname, exclude_list, build_dir, required=None):
22 """Run tests and check that we get 100% coverage
25 prog: Program to run (with be passed a '-t' argument to run tests
26 filter_fname: Normally all *.py files in the program's directory will
27 be included. If this is not None, then it is used to filter the
28 list so that only filenames that don't contain filter_fname are
30 exclude_list: List of file patterns to exclude from the coverage
32 build_dir: Build directory, used to locate libfdt.py
33 required: List of modules which must be in the coverage report
36 ValueError if the code coverage is not 100%
38 # This uses the build output from sandbox_spl to get _libfdt.so
39 path = os.path.dirname(prog)
41 glob_list = glob.glob(os.path.join(path, '*.py'))
42 glob_list = [fname for fname in glob_list if filter_fname in fname]
45 glob_list += exclude_list
46 glob_list += ['*libfdt.py', '*site-packages*']
47 cmd = ('PYTHONPATH=$PYTHONPATH:%s/sandbox_spl/tools python-coverage run '
48 '--omit "%s" %s -P1 -t' % (build_dir, ','.join(glob_list), prog))
50 stdout = command.Output('python-coverage', 'report')
51 lines = stdout.splitlines()
53 # Convert '/path/to/name.py' just the module name 'name'
54 test_set = set([os.path.splitext(os.path.basename(line.split()[0]))[0]
55 for line in lines if '/etype/' in line])
56 missing_list = required
57 missing_list.difference_update(test_set)
59 print('Missing tests for %s' % (', '.join(missing_list)))
63 coverage = lines[-1].split(' ')[-1]
66 if coverage != '100%':
68 print("Type 'python-coverage html' to get a report in "
70 print('Coverage error: %s, but should be 100%%' % coverage)
73 raise ValueError('Test coverage failure')
76 # Use this to suppress stdout/stderr output:
77 # with capture_sys_output() as (stdout, stderr)
80 def capture_sys_output():
81 capture_out, capture_err = StringIO(), StringIO()
82 old_out, old_err = sys.stdout, sys.stderr
84 sys.stdout, sys.stderr = capture_out, capture_err
85 yield capture_out, capture_err
87 sys.stdout, sys.stderr = old_out, old_err