diff tests/test-ancestor.py @ 18079:b3ba69692f8a

ancestor: move missingancestors doctest out into a separate file

This is in preparation for upcoming patches which will reuse the same graph
for tests.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-ancestor.py	Tue Dec 11 14:47:33 2012 -0800
@@ -0,0 +1,74 @@
+from mercurial import ancestor
+
+# graph is a dict of child->parent adjacency lists for this graph:
+# o  13
+# |
+# | o  12
+# | |
+# | | o    11
+# | | |\
+# | | | | o  10
+# | | | | |
+# | o---+ |  9
+# | | | | |
+# o | | | |  8
+#  / / / /
+# | | o |  7
+# | | | |
+# o---+ |  6
+#  / / /
+# | | o  5
+# | |/
+# | o  4
+# | |
+# o |  3
+# | |
+# | o  2
+# |/
+# o  1
+# |
+# o  0
+
+graph = {0: [-1], 1: [0], 2: [1], 3: [1], 4: [2], 5: [4], 6: [4],
+         7: [4], 8: [-1], 9: [6, 7], 10: [5], 11: [3, 7], 12: [9],
+         13: [8]}
+pfunc = graph.get
+
+def runmissingancestors(revs, bases):
+    print "%% ancestors of %s and not of %s" % (revs, bases)
+    print ancestor.missingancestors(revs, bases, pfunc)
+
+def test_missingancestors():
+    # Empty revs
+    runmissingancestors([], [1])
+    runmissingancestors([], [])
+
+    # If bases is empty, it's the same as if it were [nullrev]
+    runmissingancestors([12], [])
+
+    # Trivial case: revs == bases
+    runmissingancestors([0], [0])
+    runmissingancestors([4, 5, 6], [6, 5, 4])
+
+    # With nullrev
+    runmissingancestors([-1], [12])
+    runmissingancestors([12], [-1])
+
+    # 9 is a parent of 12. 7 is a parent of 9, so an ancestor of 12. 6 is an
+    # ancestor of 12 but not of 7.
+    runmissingancestors([12], [9])
+    runmissingancestors([9], [12])
+    runmissingancestors([12, 9], [7])
+    runmissingancestors([7, 6], [12])
+
+    # More complex cases
+    runmissingancestors([10], [11, 12])
+    runmissingancestors([11], [10])
+    runmissingancestors([11], [10, 12])
+    runmissingancestors([12], [10])
+    runmissingancestors([12], [11])
+    runmissingancestors([10, 11, 12], [13])
+    runmissingancestors([13], [10, 11, 12])
+
+if __name__ == '__main__':
+    test_missingancestors()