1 files changed, 59 insertions, 0 deletions
diff --git a/testing/web-platform/harness/wptrunner/tests/test_hosts.py b/testing/web-platform/harness/wptrunner/tests/test_hosts.py
new file mode 100644
index 000000000..4f122640d
--- /dev/null
+++ b/testing/web-platform/harness/wptrunner/tests/test_hosts.py
@@ -0,0 +1,59 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import unittest
+import sys
+from cStringIO import StringIO
+
+sys.path.insert(0, "..")
+
+import hosts
+
+
+class HostsTest(unittest.TestCase):
+    def do_test(self, input, expected):
+        host_file = hosts.HostsFile.from_file(StringIO(input))
+        self.assertEquals(host_file.to_string(), expected)
+
+    def test_simple(self):
+        self.do_test("""127.0.0.1    \tlocalhost  alias # comment
+# Another comment""",
+                     """127.0.0.1 localhost alias # comment
+# Another comment
+""")
+
+    def test_blank_lines(self):
+        self.do_test("""127.0.0.1    \tlocalhost  alias # comment
+
+\r
+    \t
+# Another comment""",
+                     """127.0.0.1 localhost alias # comment
+# Another comment
+""")
+
+    def test_whitespace(self):
+        self.do_test("""    \t127.0.0.1    \tlocalhost  alias # comment     \r
+    \t# Another comment""",
+                     """127.0.0.1 localhost alias # comment
+# Another comment
+""")
+
+    def test_alignment(self):
+        self.do_test("""127.0.0.1    \tlocalhost  alias
+192.168.1.1 another_host    another_alias
+""","""127.0.0.1   localhost    alias
+192.168.1.1 another_host another_alias
+"""
+)
+
+    def test_multiple_same_name(self):
+        # The semantics are that we overwrite earlier entries with the same name
+        self.do_test("""127.0.0.1    \tlocalhost  alias
+192.168.1.1 localhost    another_alias""","""192.168.1.1 localhost another_alias
+"""
+)
+
+if __name__ == "__main__":
+    unittest.main()