mojo/public/tools/mojom/version_compatibility_unittest.py
def testAddEnumValueAlias(self):
    """Adding new enum fields does not affect backward-compatibility if it does
    not introduce any new numeric values."""
    self.assertBackwardCompatible(
        'enum E { kA, kB };', 'enum E { kA, kB, kC = kA, kD = 1, kE = kD };')
Adding new enum fields does not affect backward-compatibility if it does
    not introduce any new numeric values.
Adding new enum fields does not affect backward-compatibility if it does
not introduce any new numeric values.
Adding new enum fields does not affect backward - compatibility if it does not introduce any new numeric values .
def testAddEnumValueAlias(self):
    self.assertBackwardCompatible(
        'enum E { kA, kB };', 'enum E { kA, kB, kC = kA, kD = 1, kE = kD };')
def testAddEnumValueAlias ( self ) : self . assertBackwardCompatible ( 'enum E { kA, kB };' , 'enum E { kA, kB, kC = kA, kD = 1, kE = kD };' )
Adding new enum fields does not affect backward-compatibility if it does
not introduce any new numeric values.
Adding new enum fields does not affect backward - compatibility if it does not introduce any new numeric values .
"""Adding new enum fields does not affect backward-compatibility if it does
    not introduce any new numeric values."""
self