Squashed 'waflib/' changes from e7a29b6b..27a69a76

27a69a76 Add option to filter tests by regular expression
ac29b74a Fix configuring with root prefix
6134be69 Print test coverage summary
6d7dd590 Don't attempt to clear coverage when coverage is disabled
cddbcb57 Pass file comparison test if difflib finds no changes
6e4e92b0 Seek to end before checking the size of stderr output

git-subtree-dir: waflib
git-subtree-split: 27a69a76d1f625ad86b60b5dbd12368bc25cae25

1 files changed, 43 insertions, 10 deletions

diff --git a/extras/autowaf.py b/extras/autowaf.py
index 51077d18..5feef036 100644
--- a/extras/autowaf.py
+++ b/extras/autowaf.py
@@ -93,6 +93,9 @@ def set_options(opt, debug_by_default=False):
         test_opts.add_option('--wrapper', type='string',
                              dest='test_wrapper',
                              help='command prefix for tests (e.g. valgrind)')
+        test_opts.add_option('--test-filter', type='string',
+                             dest='test_filter',
+                             help='regular expression for tests to run')
 
     # Run options
     run_opts = opt.add_option_group('Run options')
@@ -539,7 +542,7 @@ def build_pc(bld, name, version, version_suffix, libs, subst_dict={}):
     """
 
     pkg_prefix       = bld.env['PREFIX']
-    if pkg_prefix[-1] == '/':
+    if len(pkg_prefix) > 1 and pkg_prefix[-1] == '/':
         pkg_prefix = pkg_prefix[:-1]
 
     target = name.lower()
@@ -807,11 +810,15 @@ def show_diff(from_lines, to_lines, from_filename, to_filename):
     import difflib
     import sys
 
+    same = True
     for line in difflib.unified_diff(
             from_lines, to_lines,
             fromfile=os.path.abspath(from_filename),
             tofile=os.path.abspath(to_filename)):
         sys.stderr.write(line)
+        same = False
+
+    return same
 
 def test_file_equals(patha, pathb):
     import filecmp
@@ -827,9 +834,7 @@ def test_file_equals(patha, pathb):
 
     with io.open(patha, 'rU', encoding='utf-8') as fa:
         with io.open(pathb, 'rU', encoding='utf-8') as fb:
-            show_diff(fa.readlines(), fb.readlines(), patha, pathb)
-
-    return False
+            return show_diff(fa.readlines(), fb.readlines(), patha, pathb)
 
 def bench_time():
     if hasattr(time, 'perf_counter'): # Added in Python 3.3
@@ -864,12 +869,26 @@ class TestScope:
         self.n_total = 0
 
     def run(self, test, **kwargs):
+        if type(test) == list and 'name' not in kwargs:
+            import pipes
+            kwargs['name'] = ' '.join(map(pipes.quote, test))
+
+        if Options.options.test_filter and 'name' in kwargs:
+            import re
+            found = False
+            for scope in self.tst.stack:
+                if re.search(Options.options.test_filter, scope.name):
+                    found = True
+                    break
+
+            if (not found and
+                not re.search(Options.options.test_filter, self.name) and
+                not re.search(Options.options.test_filter, kwargs['name'])):
+                return True
+
         if callable(test):
             output = self._run_callable(test, **kwargs)
         elif type(test) == list:
-            if 'name' not in kwargs:
-                import pipes
-                kwargs['name'] = ' '.join(map(pipes.quote, test))
 
             output = self._run_command(test, **kwargs)
         else:
@@ -888,9 +907,10 @@ class TestScope:
         if 'stderr' in kwargs and kwargs['stderr'] == NONEMPTY:
             # Run with a temp file for stderr and check that it is non-empty
             import tempfile
-            with tempfile.TemporaryFile(mode='w') as stderr:
+            with tempfile.TemporaryFile() as stderr:
                 kwargs['stderr'] = stderr
                 output = self.run(test, **kwargs)
+                stderr.seek(0, 2) # Seek to end
                 return (output if not output else
                         self.run(
                             lambda: stderr.tell() > 0,
@@ -991,7 +1011,7 @@ class TestContext(Build.BuildContext):
         Logs.info("Waf: Entering directory `%s'\n", bld_dir)
         os.chdir(str(bld_dir))
 
-        if str(node.parent) == Context.top_dir:
+        if not self.env.NO_COVERAGE and str(node.parent) == Context.top_dir:
             self.clear_coverage()
 
         self.log_good('=' * 10, 'Running %s tests', group_name)
@@ -1026,7 +1046,7 @@ class TestContext(Build.BuildContext):
                 self.gen_coverage()
 
             if os.path.exists('coverage/index.html'):
-                self.log_good('COVERAGE', '<file://%s>',
+                self.log_good('REPORT', '<file://%s>',
                               os.path.abspath('coverage/index.html'))
 
         successes = scope.n_total - scope.n_failed
@@ -1098,6 +1118,19 @@ class TestContext(Build.BuildContext):
                                  'cov.lcov'],
                                 stdout=log, stderr=log)
 
+            summary = subprocess.check_output(
+                ['lcov', '--summary',
+                 '--rc', 'lcov_branch_coverage=1',
+                 'cov.lcov'],
+                stderr=subprocess.STDOUT).decode('ascii')
+
+            import re
+            lines = re.search('lines\.*: (.*)%.*', summary).group(1)
+            functions = re.search('functions\.*: (.*)%.*', summary).group(1)
+            branches = re.search('branches\.*: (.*)%.*', summary).group(1)
+            self.log_good('COVERAGE', '%s%% lines, %s%% functions, %s%% branches',
+                          lines, functions, branches)
+
         except Exception:
             Logs.warn('Failed to run lcov to generate coverage report')