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# Copyright 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import sys
import traceback
import mojom.generate.module as mojom
# Support for writing mojom test cases.
# RunTest(fn) will execute fn, catching any exceptions. fn should return
# the number of errors that are encountered.
#
# EXPECT_EQ(a, b) and EXPECT_TRUE(b) will print error information if the
# expectations are not true and return a non zero value. This allows test cases
# to be written like this
#
# def Foo():
# errors = 0
# errors += EXPECT_EQ('test', test())
# ...
# return errors
#
# RunTest(foo)
def FieldsAreEqual(field1, field2):
if field1 == field2:
return True
return field1.name == field2.name and \
KindsAreEqual(field1.kind, field2.kind) and \
field1.ordinal == field2.ordinal and \
field1.default == field2.default
def KindsAreEqual(kind1, kind2):
if kind1 == kind2:
return True
if kind1.__class__ != kind2.__class__ or kind1.spec != kind2.spec:
return False
if kind1.__class__ == mojom.Kind:
return kind1.spec == kind2.spec
if kind1.__class__ == mojom.Struct:
if kind1.name != kind2.name or \
kind1.spec != kind2.spec or \
len(kind1.fields) != len(kind2.fields):
return False
for i in range(len(kind1.fields)):
if not FieldsAreEqual(kind1.fields[i], kind2.fields[i]):
return False
return True
if kind1.__class__ == mojom.Array:
return KindsAreEqual(kind1.kind, kind2.kind)
print 'Unknown Kind class: ', kind1.__class__.__name__
return False
def ParametersAreEqual(parameter1, parameter2):
if parameter1 == parameter2:
return True
return parameter1.name == parameter2.name and \
parameter1.ordinal == parameter2.ordinal and \
parameter1.default == parameter2.default and \
KindsAreEqual(parameter1.kind, parameter2.kind)
def MethodsAreEqual(method1, method2):
if method1 == method2:
return True
if method1.name != method2.name or \
method1.ordinal != method2.ordinal or \
len(method1.parameters) != len(method2.parameters):
return False
for i in range(len(method1.parameters)):
if not ParametersAreEqual(method1.parameters[i], method2.parameters[i]):
return False
return True
def InterfacesAreEqual(interface1, interface2):
if interface1 == interface2:
return True
if interface1.name != interface2.name or \
len(interface1.methods) != len(interface2.methods):
return False
for i in range(len(interface1.methods)):
if not MethodsAreEqual(interface1.methods[i], interface2.methods[i]):
return False
return True
def ModulesAreEqual(module1, module2):
if module1 == module2:
return True
if module1.name != module2.name or \
module1.namespace != module2.namespace or \
len(module1.structs) != len(module2.structs) or \
len(module1.interfaces) != len(module2.interfaces):
return False
for i in range(len(module1.structs)):
if not KindsAreEqual(module1.structs[i], module2.structs[i]):
return False
for i in range(len(module1.interfaces)):
if not InterfacesAreEqual(module1.interfaces[i], module2.interfaces[i]):
return False
return True
# Builds and returns a Module suitable for testing/
def BuildTestModule():
module = mojom.Module('test', 'testspace')
struct = module.AddStruct('teststruct')
struct.AddField('testfield1', mojom.INT32)
struct.AddField('testfield2', mojom.Array(mojom.INT32), 42)
interface = module.AddInterface('Server')
method = interface.AddMethod('Foo', 42)
method.AddParameter('foo', mojom.INT32)
method.AddParameter('bar', mojom.Array(struct))
return module
# Tests if |module| is as built by BuildTestModule(). Returns the number of
# errors
def TestTestModule(module):
errors = 0
errors += EXPECT_EQ('test', module.name)
errors += EXPECT_EQ('testspace', module.namespace)
errors += EXPECT_EQ(1, len(module.structs))
errors += EXPECT_EQ('teststruct', module.structs[0].name)
errors += EXPECT_EQ(2, len(module.structs[0].fields))
errors += EXPECT_EQ('testfield1', module.structs[0].fields[0].name)
errors += EXPECT_EQ(mojom.INT32, module.structs[0].fields[0].kind)
errors += EXPECT_EQ('testfield2', module.structs[0].fields[1].name)
errors += EXPECT_EQ(mojom.Array, module.structs[0].fields[1].kind.__class__)
errors += EXPECT_EQ(mojom.INT32, module.structs[0].fields[1].kind.kind)
errors += EXPECT_EQ(1, len(module.interfaces))
errors += EXPECT_EQ('Server', module.interfaces[0].name)
errors += EXPECT_EQ(1, len(module.interfaces[0].methods))
errors += EXPECT_EQ('Foo', module.interfaces[0].methods[0].name)
errors += EXPECT_EQ(2, len(module.interfaces[0].methods[0].parameters))
errors += EXPECT_EQ('foo', module.interfaces[0].methods[0].parameters[0].name)
errors += EXPECT_EQ(mojom.INT32,
module.interfaces[0].methods[0].parameters[0].kind)
errors += EXPECT_EQ('bar', module.interfaces[0].methods[0].parameters[1].name)
errors += EXPECT_EQ(
mojom.Array,
module.interfaces[0].methods[0].parameters[1].kind.__class__)
errors += EXPECT_EQ(
module.structs[0],
module.interfaces[0].methods[0].parameters[1].kind.kind)
return errors
def PrintFailure(string):
stack = traceback.extract_stack()
frame = stack[len(stack)-3]
sys.stderr.write("ERROR at %s:%d, %s\n" % (frame[0], frame[1], string))
print "Traceback:"
for line in traceback.format_list(stack[:len(stack)-2]):
sys.stderr.write(line)
def EXPECT_EQ(a, b):
if a != b:
PrintFailure("%s != %s" % (a, b))
return 1
return 0
def EXPECT_TRUE(a):
if not a:
PrintFailure('Expecting True')
return 1
return 0
def RunTest(fn):
sys.stdout.write('Running %s...' % fn.__name__)
try:
errors = fn()
except:
traceback.print_exc(sys.stderr)
errors = 1
if errors == 0:
sys.stdout.write('OK\n')
elif errors == 1:
sys.stdout.write('1 ERROR\n')
else:
sys.stdout.write('%d ERRORS\n' % errors)
return errors
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