[PATCH 5 of 9] dicthelpers: add unit tests

[Siddharth Agarwal]

# HG changeset patch
# User Siddharth Agarwal <sid0 at fb.com>
# Date 1364170255 25200
#      Sun Mar 24 17:10:55 2013 -0700
# Node ID 7bc5b8e56c65d7ad228fe700974a9621bdfd42c4
# Parent  78f178247f634bac6ff2ffe54b0d06185ef0e670
dicthelpers: add unit tests

diff --git a/tests/test-dicthelpers.py b/tests/test-dicthelpers.py
new file mode 100644
--- /dev/null
+++ b/tests/test-dicthelpers.py
@@ -0,0 +1,34 @@
+from mercurial.dicthelpers import diff, join
+
+def test_dicthelpers():
+    # empty dicts
+    print "diff({}, {}):", sorted(diff({}, {}).items())
+    print "join({}, {}):", sorted(join({}, {}).items())
+
+    d1 = {}
+    d1['a'] = 'foo'
+    d1['b'] = 'bar'
+    d1['c'] = 'baz'
+
+    # same identity
+    print "diff(d1, d1):", sorted(diff(d1, d1).items())
+    print "join(d1, d1):", sorted(join(d1, d1).items())
+
+    # vs empty
+    print "diff(d1, {}):", sorted(diff(d1, {}).items())
+    print "join(d1, {}):", sorted(join(d1, {}).items())
+
+    d2 = {}
+    d2['a'] = 'foo2'
+    d2['b'] = 'bar'
+    d2['d'] = 'quux'
+
+    print "diff(d1, d2):", sorted(diff(d1, d2).items())
+    print "join(d1, d2):", sorted(join(d1, d2).items())
+
+    # with default argument
+    print "diff(d1, d2, 123):", sorted(diff(d1, d2, 123).items())
+    print "join(d1, d2, 456):", sorted(join(d1, d2, 456).items())
+
+if __name__ == '__main__':
+    test_dicthelpers()
diff --git a/tests/test-dicthelpers.py.out b/tests/test-dicthelpers.py.out
new file mode 100644
--- /dev/null
+++ b/tests/test-dicthelpers.py.out
@@ -0,0 +1,10 @@
+diff({}, {}): []
+join({}, {}): []
+diff(d1, d1): []
+join(d1, d1): [('a', ('foo', 'foo')), ('b', ('bar', 'bar')), ('c', ('baz', 'baz'))]
+diff(d1, {}): [('a', ('foo', None)), ('b', ('bar', None)), ('c', ('baz', None))]
+join(d1, {}): [('a', ('foo', None)), ('b', ('bar', None)), ('c', ('baz', None))]
+diff(d1, d2): [('a', ('foo', 'foo2')), ('c', ('baz', None)), ('d', (None, 'quux'))]
+join(d1, d2): [('a', ('foo', 'foo2')), ('b', ('bar', 'bar')), ('c', ('baz', None)), ('d', (None, 'quux'))]
+diff(d1, d2, 123): [('a', ('foo', 'foo2')), ('c', ('baz', 123)), ('d', (123, 'quux'))]
+join(d1, d2, 456): [('a', ('foo', 'foo2')), ('b', ('bar', 'bar')), ('c', ('baz', 456)), ('d', (456, 'quux'))]