def testCommonPrefixLen_WithSomeCommonPrefixes(self):
"""
Test the common prefixes of a few strings where only some of them
match.
"""
instrings = ["Hello World", "Hell on Earth", "Good Bye World", "Sayonara World"]
self.assertEqual(0, dtpp.find_common_prefix_len(instrings))
def testCommonPrefixLen_WithEmptyFewStrings(self):
"""
Test the common prefixes of a few strings where some of them are
empty.
"""
instrings = ["Hello World", "", "", "Hello World"]
self.assertEqual(0, dtpp.find_common_prefix_len(instrings))
def testCommonPrefixLen_AllNonEmpty(self):
"""
Test the common prefixes of a few non-empty strings.
"""
instrings = ["Hello World", "Hell on earth", "Helium Balloons"]
self.assertEqual(3, dtpp.find_common_prefix_len(instrings))
def testCommonPrefixLen_AllNonEmptyWithoutCommonPrefixes(self):
"""
Test the common prefixes of a few non-empty strings without any common prefixes
"""
instrings = ["Hello World", "Good Bye World", "Sayonara World"]
self.assertEqual(0, dtpp.find_common_prefix_len(instrings))