Add pickle2json converter. Closes #395

--HG--
branch : read_pickle
extra : amend_source : 71ae428d9f389e19ed74215bfc3f1630fcdc40a1

1 files changed, 64 insertions, 0 deletions

diff --git a/tests/test_pickle2json.py b/tests/test_pickle2json.py
new file mode 100644
index 00000000..06dc4c2e
--- /dev/null
+++ b/tests/test_pickle2json.py
@@ -0,0 +1,64 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+"""Tests for coverage.pickle2json"""
+
+from coverage.backward import pickle, iitems
+from coverage.data import CoverageData
+from coverage.pickle2json import pickle2json
+
+from tests.coveragetest import CoverageTest
+from tests.test_data import *
+
+class Pickle2JsonTestInTempDir(DataTestHelpers, CoverageTest):
+    """ Tests pickle2json """
+
+    def write_pickled_file(self, covdata, filename):
+        """ write coverage data as pickled `filename` """
+        # Create the file data.
+        file_data = {}
+
+        if covdata._arcs:
+            file_data['arcs'] = dict((f, list(amap)) for f, amap in iitems(covdata._arcs))
+        else:
+            file_data['lines'] = dict((f, list(lmap)) for f, lmap in iitems(covdata._lines))
+
+        # Write the pickle to the file.
+        file_obj = open(filename, 'wb')
+        try:
+            pickle.dump(file_data, file_obj, 2)
+        finally:
+            file_obj.close()
+
+    def test_read_write_lines_pickle(self):
+        """ test the old pickle format """
+        covdata1 = CoverageData()
+        covdata1.set_lines(LINES_1)
+        self.write_pickled_file(covdata1, "lines.pkl")
+
+        pickle2json("lines.pkl", "lines.json")
+
+        covdata2 = CoverageData()
+        covdata2.read_file("lines.json")
+        self.assert_line_counts(covdata2, SUMMARY_1)
+        self.assert_measured_files(covdata2, MEASURED_FILES_1)
+        self.assertCountEqual(covdata2.lines("a.py"), A_PY_LINES_1)
+        self.assertEqual(covdata2.run_infos(), [])
+
+    def test_read_write_arcs_pickle(self):
+        """ test the old pickle format """
+        covdata1 = CoverageData()
+        covdata1.set_arcs(ARCS_3)
+        self.write_pickled_file(covdata1, "arcs.pkl")
+
+        pickle2json("arcs.pkl", "arcs.json")
+
+        covdata2 = CoverageData()
+        covdata2.read_file("arcs.json")
+        self.assert_line_counts(covdata2, SUMMARY_3)
+        self.assert_measured_files(covdata2, MEASURED_FILES_3)
+        self.assertCountEqual(covdata2.lines("x.py"), X_PY_LINES_3)
+        self.assertCountEqual(covdata2.arcs("x.py"), X_PY_ARCS_3)
+        self.assertCountEqual(covdata2.lines("y.py"), Y_PY_LINES_3)
+        self.assertCountEqual(covdata2.arcs("y.py"), Y_PY_ARCS_3)
+        self.assertEqual(covdata2.run_infos(), [])