html total must account for files 100% covered #549issue-549

The --skip-covered implementation for html must not just skip the
files that are 100% covered. It must remember them and not fail with a
"no coverage data" when all files are 100% covered.

The statistics about the files that are 100% covered must also be
summed in the total for the index.html page.

close #549

1 files changed, 10 insertions, 1 deletions

diff --git a/tests/test_html.py b/tests/test_html.py
index 1c9fa43..06d5946 100644
--- a/tests/test_html.py
+++ b/tests/test_html.py
@@ -47,7 +47,7 @@ class HtmlTestHelpers(CoverageTest):
         self.clean_local_file_imports()
         cov = coverage.Coverage(**(covargs or {}))
         self.start_import_stop(cov, "main_file")
-        cov.html_report(**(htmlargs or {}))
+        return cov.html_report(**(htmlargs or {}))
 
     def remove_html_files(self):
         """Remove the HTML files created as part of the HTML report."""
@@ -464,6 +464,15 @@ class HtmlTest(HtmlTestHelpers, CoverageTest):
         self.assert_doesnt_exist("htmlcov/main_file_py.html")
         self.assert_exists("htmlcov/not_covered_py.html")
 
+    def test_report_skip_covered_100(self):
+        self.make_file("main_file.py", """
+            def normal():
+                print("z")
+            normal()
+        """)
+        assert self.run_coverage(covargs=dict(source="."), htmlargs=dict(skip_covered=True)) == 100.0
+        self.assert_doesnt_exist("htmlcov/main_file_py.html")
+
     def test_report_skip_covered_branches(self):
         self.make_file("main_file.py", """
             import not_covered