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"""Tests that HTML generation is awesome."""
import os.path, sys
import coverage
sys.path.insert(0, os.path.split(__file__)[0]) # Force relative import for Py3k
from coveragetest import CoverageTest
class HtmlTest(CoverageTest):
"""HTML!"""
def create_initial_files(self):
"""Create the source files we need to run these tests."""
self.make_file("main_file.py", """\
import helper1, helper2
helper1.func1(12)
helper2.func2(12)
""")
self.make_file("helper1.py", """\
def func1(x):
if x % 2:
print("odd")
""")
self.make_file("helper2.py", """\
def func2(x):
print("x is %d" % x)
""")
def run_coverage(self, **kwargs):
"""Run coverage on main_file.py, and create an HTML report."""
self.clean_local_file_imports()
cov = coverage.coverage(**kwargs)
cov.start()
self.import_local_file("main_file")
cov.stop()
cov.html_report()
def remove_html_files(self):
"""Remove the HTML files created as part of the HTML report."""
os.remove("htmlcov/index.html")
os.remove("htmlcov/main_file.html")
os.remove("htmlcov/helper1.html")
os.remove("htmlcov/helper2.html")
def test_html_created(self):
# Test basic HTML generation: files should be created.
self.create_initial_files()
self.run_coverage()
self.assert_exists("htmlcov/index.html")
self.assert_exists("htmlcov/main_file.html")
self.assert_exists("htmlcov/helper1.html")
self.assert_exists("htmlcov/helper2.html")
self.assert_exists("htmlcov/style.css")
self.assert_exists("htmlcov/coverage_html.js")
def test_html_delta_from_source_change(self):
# HTML generation can create only the files that have changed.
# In this case, helper1 changes because its source is different.
self.create_initial_files()
self.run_coverage()
index1 = open("htmlcov/index.html").read()
self.remove_html_files()
# Now change a file and do it again
self.make_file("helper1.py", """\
def func1(x): # A nice function
if x % 2:
print("odd")
""")
self.run_coverage()
# Only the changed files should have been created.
self.assert_exists("htmlcov/index.html")
self.assert_exists("htmlcov/helper1.html")
self.assert_doesnt_exist("htmlcov/main_file.html")
self.assert_doesnt_exist("htmlcov/helper2.html")
index2 = open("htmlcov/index.html").read()
self.assertMultiLineEqual(index1, index2)
def test_html_delta_from_coverage_change(self):
# HTML generation can create only the files that have changed.
# In this case, helper1 changes because its coverage is different.
self.create_initial_files()
self.run_coverage()
self.remove_html_files()
# Now change a file and do it again
self.make_file("main_file.py", """\
import helper1, helper2
helper1.func1(23)
helper2.func2(23)
""")
self.run_coverage()
# Only the changed files should have been created.
self.assert_exists("htmlcov/index.html")
self.assert_exists("htmlcov/helper1.html")
self.assert_exists("htmlcov/main_file.html")
self.assert_doesnt_exist("htmlcov/helper2.html")
def test_html_delta_from_settings_change(self):
# HTML generation can create only the files that have changed.
# In this case, everything changes because the coverage settings have
# changed.
self.create_initial_files()
self.run_coverage()
index1 = open("htmlcov/index.html").read()
self.remove_html_files()
self.run_coverage(timid=True)
# Only the changed files should have been created.
self.assert_exists("htmlcov/index.html")
self.assert_exists("htmlcov/helper1.html")
self.assert_exists("htmlcov/main_file.html")
self.assert_exists("htmlcov/helper2.html")
index2 = open("htmlcov/index.html").read()
self.assertMultiLineEqual(index1, index2)
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