Prevent erroneous constraints.txt file checkins

python/constraints.txt.default

@@ -0,0 +1,26 @@
+# This file allows our dependencies to be against specific versions
+# or git tags. Each line is similar to a requirements.txt line,
+# except that when installing the dependencies, the constraints.txt
+# is converted into the `dependency_links` of the setuptools
+# packaging script. This allows us to maintain dependencies across
+# repositories.
+#
+# For example, during development we use the development version
+# of common with the line:
+#
+# git+git://github.com/ga4gh/ga4gh-common.git@master#egg=ga4gh_common
+#
+# When one has proposed a common modification, they can change this
+# constraint to point at the branch of their proposed change:
+#
+# git+git://github.com/david4096/ga4gh-common.git@some-branch#egg=ga4gh_common
+#
+# Then, when the change has been accepted at the common repository
+# you can change this to point back at the master branch!
+#
+# When making a release, these constraints are changed to point at
+# the released dependency.
+#
+# ga4gh-common==0.1.0
+#
+git+git://github.com/ga4gh/ga4gh-common.git@master#egg=ga4gh_common

tests/test_compile.py

@@ -68,7 +68,5 @@ def testCompile(self):
                 checkedInFilePath)
             tempFileShortPath = self._getDirAndFilenameOfPath(tempFilePath)
             self.assertEqual(checkedInFileShortPath, tempFileShortPath)
-            with open(checkedInFilePath) as checkedInFile, \
-                    open(tempFilePath) as tempFile:
-                for checkedInLine, tempLine in zip(checkedInFile, tempFile):
-                    self.assertEqual(checkedInLine, tempLine)
+            utils.assertFileContentsIdentical(
+                checkedInFilePath, tempFilePath)

tests/test_constraints.py

@@ -0,0 +1,20 @@
+"""
+Tests the constraints invariants
+"""
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import unittest
+
+import ga4gh.common.utils as utils
+
+
+class TestConstraints(unittest.TestCase):
+
+    constraintsFilePath = 'python/constraints.txt'
+    constraintsFileDefaultPath = 'python/constraints.txt.default'
+
+    def testDefault(self):
+        utils.assertFileContentsIdentical(
+            self.constraintsFilePath, self.constraintsFileDefaultPath)