implement --skip-covered for html report #433

close #433

5 files changed, 33 insertions, 6 deletions

diff --git a/coverage/cmdline.py b/coverage/cmdline.py
index 8942024..0b12177 100644
--- a/coverage/cmdline.py
+++ b/coverage/cmdline.py
@@ -320,6 +320,7 @@ CMDS = {
             Opts.include,
             Opts.omit,
             Opts.title,
+            Opts.skip_covered,
             ] + GLOBAL_ARGS,
         usage="[options] [modules]",
         description=(
@@ -510,7 +511,7 @@ class CoverageScript(object):
         elif options.action == "html":
             total = self.coverage.html_report(
                 directory=options.directory, title=options.title,
-                **report_args)
+                skip_covered=options.skip_covered, **report_args)
         elif options.action == "xml":
             outfile = options.outfile
             total = self.coverage.xml_report(outfile=outfile, **report_args)
diff --git a/coverage/control.py b/coverage/control.py
index eb0fbc4..1b7edc4 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -996,7 +996,8 @@ class Coverage(object):
         reporter.report(morfs, directory=directory)
 
     def html_report(self, morfs=None, directory=None, ignore_errors=None,
-                    omit=None, include=None, extra_css=None, title=None):
+                    omit=None, include=None, extra_css=None, title=None,
+                    skip_covered=None):
         """Generate an HTML report.
 
         The HTML is written to `directory`.  The file "index.html" is the
@@ -1018,6 +1019,7 @@ class Coverage(object):
         self.config.from_args(
             ignore_errors=ignore_errors, omit=omit, include=include,
             html_dir=directory, extra_css=extra_css, html_title=title,
+            skip_covered=skip_covered,
             )
         reporter = HtmlReporter(self, self.config)
         return reporter.report(morfs)
diff --git a/coverage/html.py b/coverage/html.py
index 14771dd..22783ef 100644
--- a/coverage/html.py
+++ b/coverage/html.py
@@ -171,6 +171,15 @@ class HtmlReporter(Reporter):
 
     def html_file(self, fr, analysis):
         """Generate an HTML file for one source file."""
+        # Get the numbers for this file.
+        nums = analysis.numbers
+        if self.config.skip_covered:
+            # Don't report on 100% files.
+            no_missing_lines = (nums.n_missing == 0)
+            no_missing_branches = (nums.n_partial_branches == 0)
+            if no_missing_lines and no_missing_branches:
+                return
+
         source = fr.source()
 
         # Find out if the file on disk is already correct.
@@ -184,9 +193,6 @@ class HtmlReporter(Reporter):
 
         self.status.set_file_hash(rootname, this_hash)
 
-        # Get the numbers for this file.
-        nums = analysis.numbers
-
         if self.has_arcs:
             missing_branch_arcs = analysis.missing_branch_arcs()
             arcs_executed = analysis.arcs_executed()
diff --git a/tests/test_cmdline.py b/tests/test_cmdline.py
index 3b982eb..116ad7d 100644
--- a/tests/test_cmdline.py
+++ b/tests/test_cmdline.py
@@ -39,7 +39,7 @@ class BaseCmdLineTest(CoverageTest):
     )
     defaults.html_report(
         directory=None, ignore_errors=None, include=None, omit=None, morfs=[],
-        title=None,
+        skip_covered=None, title=None
     )
     defaults.report(
         ignore_errors=None, include=None, omit=None, morfs=[],
diff --git a/tests/test_html.py b/tests/test_html.py
index b1f813e..b981362 100644
--- a/tests/test_html.py
+++ b/tests/test_html.py
@@ -447,6 +447,24 @@ class HtmlTest(HtmlTestHelpers, CoverageTest):
         self.run_coverage()
         self.assert_exists("htmlcov/status.dat")
 
+    def test_report_skip_covered_no_branches(self):
+        self.make_file("main.py", """
+            import not_covered
+
+            def normal():
+                print("z")
+            normal()
+        """)
+        self.make_file("not_covered.py", """
+            def not_covered():
+                print("n")
+        """)
+        self.run_command("coverage run main.py")
+        self.run_command("coverage html --skip-covered")
+        self.assert_exists("htmlcov/index.html")
+        self.assert_doesnt_exist("htmlcov/main_py.html")
+        self.assert_exists("htmlcov/not_covered_py.html")
+
 
 class HtmlStaticFileTest(CoverageTest):
     """Tests of the static file copying for the HTML report."""