add tests for raising RequirementsFileParseError

Author: qwcode

tests/unit/test_req_file.py

@@ -6,6 +6,7 @@
 import pytest
 from pretend import stub
 
+from pip.exceptions import RequirementsFileParseError
 from pip.download import PipSession
 from pip.index import PackageFinder
 from pip.req.req_install import InstallRequirement
@@ -111,9 +112,6 @@ def test_install_and_global_options(self):
 class TestParseLine(object):
     """tests for `parse_line`"""
 
-    # TODO
-    # parser error tests
-
     def test_parse_line_editable(self):
         assert parse_line('-e url') == (REQUIREMENT_EDITABLE, 'url')
         assert parse_line('--editable url') == (REQUIREMENT_EDITABLE, 'url')
@@ -147,6 +145,15 @@ def test_parse_line_requirement_with_options(self):
             ('SomeProject', {'install_options': ['--user']})
         )
 
+    def test_flag_with_value_raises(self):
+        with pytest.raises(RequirementsFileParseError):
+            parse_line('--no-index url')
+
+    def test_option_with_no_value_raises(self):
+        with pytest.raises(RequirementsFileParseError):
+            parse_line('--index-url')
+
+
 
 class TestParseContent(object):
     """tests for `parse_content`"""