googletest/googlemock/scripts/generator/cpp/gmock_class_test.py
Abseil Team 37f3227831 Googletest export
Add a matcher `testing::ReturnRoundRobin` which, on each call, returns the next element in the sequence, restarting at the beginning once it has reached the end.

PiperOrigin-RevId: 276312136
2019-10-23 15:54:45 -04:00

522 lines
13 KiB
Python
Executable File

#!/usr/bin/env python
#
# Copyright 2009, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Tests for gmock.scripts.generator.cpp.gmock_class."""
import os
import sys
import unittest
# Allow the cpp imports below to work when run as a standalone script.
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
from cpp import ast
from cpp import gmock_class
class TestCase(unittest.TestCase):
"""Helper class that adds assert methods."""
def StripLeadingWhitespace(self, lines):
"""Strip leading whitespace in each line in 'lines'."""
return '\n'.join([s.lstrip() for s in lines.split('\n')])
def assertEqualIgnoreLeadingWhitespace(self, expected_lines, lines):
"""Specialized assert that ignores the indent level."""
self.assertEqual(expected_lines, self.StripLeadingWhitespace(lines))
class GenerateMethodsTest(TestCase):
def GenerateMethodSource(self, cpp_source):
"""Convert C++ source to Google Mock output source lines."""
method_source_lines = []
# <test> is a pseudo-filename, it is not read or written.
builder = ast.BuilderFromSource(cpp_source, '<test>')
ast_list = list(builder.Generate())
gmock_class._GenerateMethods(method_source_lines, cpp_source, ast_list[0])
return '\n'.join(method_source_lines)
def testSimpleMethod(self):
source = """
class Foo {
public:
virtual int Bar();
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testSimpleConstructorsAndDestructor(self):
source = """
class Foo {
public:
Foo();
Foo(int x);
Foo(const Foo& f);
Foo(Foo&& f);
~Foo();
virtual int Bar() = 0;
};
"""
# The constructors and destructor should be ignored.
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testVirtualDestructor(self):
source = """
class Foo {
public:
virtual ~Foo();
virtual int Bar() = 0;
};
"""
# The destructor should be ignored.
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testExplicitlyDefaultedConstructorsAndDestructor(self):
source = """
class Foo {
public:
Foo() = default;
Foo(const Foo& f) = default;
Foo(Foo&& f) = default;
~Foo() = default;
virtual int Bar() = 0;
};
"""
# The constructors and destructor should be ignored.
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testExplicitlyDeletedConstructorsAndDestructor(self):
source = """
class Foo {
public:
Foo() = delete;
Foo(const Foo& f) = delete;
Foo(Foo&& f) = delete;
~Foo() = delete;
virtual int Bar() = 0;
};
"""
# The constructors and destructor should be ignored.
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testSimpleOverrideMethod(self):
source = """
class Foo {
public:
int Bar() override;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint());',
self.GenerateMethodSource(source))
def testSimpleConstMethod(self):
source = """
class Foo {
public:
virtual void Bar(bool flag) const;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_CONST_METHOD1(Bar,\nvoid(bool flag));',
self.GenerateMethodSource(source))
def testExplicitVoid(self):
source = """
class Foo {
public:
virtual int Bar(void);
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0(Bar,\nint(void));',
self.GenerateMethodSource(source))
def testStrangeNewlineInParameter(self):
source = """
class Foo {
public:
virtual void Bar(int
a) = 0;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD1(Bar,\nvoid(int a));',
self.GenerateMethodSource(source))
def testDefaultParameters(self):
source = """
class Foo {
public:
virtual void Bar(int a, char c = 'x') = 0;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD2(Bar,\nvoid(int, char));',
self.GenerateMethodSource(source))
def testMultipleDefaultParameters(self):
source = """
class Foo {
public:
virtual void Bar(int a = 42, char c = 'x') = 0;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD2(Bar,\nvoid(int, char));',
self.GenerateMethodSource(source))
def testRemovesCommentsWhenDefaultsArePresent(self):
source = """
class Foo {
public:
virtual void Bar(int a = 42 /* a comment */,
char /* other comment */ c= 'x') = 0;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD2(Bar,\nvoid(int, char));',
self.GenerateMethodSource(source))
def testDoubleSlashCommentsInParameterListAreRemoved(self):
source = """
class Foo {
public:
virtual void Bar(int a, // inline comments should be elided.
int b // inline comments should be elided.
) const = 0;
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_CONST_METHOD2(Bar,\nvoid(int a, int b));',
self.GenerateMethodSource(source))
def testCStyleCommentsInParameterListAreNotRemoved(self):
# NOTE(nnorwitz): I'm not sure if it's the best behavior to keep these
# comments. Also note that C style comments after the last parameter
# are still elided.
source = """
class Foo {
public:
virtual const string& Bar(int /* keeper */, int b);
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD2(Bar,\nconst string&(int /* keeper */, int b));',
self.GenerateMethodSource(source))
def testArgsOfTemplateTypes(self):
source = """
class Foo {
public:
virtual int Bar(const vector<int>& v, map<int, string>* output);
};"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD2(Bar,\n'
'int(const vector<int>& v, map<int, string>* output));',
self.GenerateMethodSource(source))
def testReturnTypeWithOneTemplateArg(self):
source = """
class Foo {
public:
virtual vector<int>* Bar(int n);
};"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD1(Bar,\nvector<int>*(int n));',
self.GenerateMethodSource(source))
def testReturnTypeWithManyTemplateArgs(self):
source = """
class Foo {
public:
virtual map<int, string> Bar();
};"""
# Comparing the comment text is brittle - we'll think of something
# better in case this gets annoying, but for now let's keep it simple.
self.assertEqualIgnoreLeadingWhitespace(
'// The following line won\'t really compile, as the return\n'
'// type has multiple template arguments. To fix it, use a\n'
'// typedef for the return type.\n'
'MOCK_METHOD0(Bar,\nmap<int, string>());',
self.GenerateMethodSource(source))
def testSimpleMethodInTemplatedClass(self):
source = """
template<class T>
class Foo {
public:
virtual int Bar();
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD0_T(Bar,\nint());',
self.GenerateMethodSource(source))
def testPointerArgWithoutNames(self):
source = """
class Foo {
virtual int Bar(C*);
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD1(Bar,\nint(C*));',
self.GenerateMethodSource(source))
def testReferenceArgWithoutNames(self):
source = """
class Foo {
virtual int Bar(C&);
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD1(Bar,\nint(C&));',
self.GenerateMethodSource(source))
def testArrayArgWithoutNames(self):
source = """
class Foo {
virtual int Bar(C[]);
};
"""
self.assertEqualIgnoreLeadingWhitespace(
'MOCK_METHOD1(Bar,\nint(C[]));',
self.GenerateMethodSource(source))
class GenerateMocksTest(TestCase):
def GenerateMocks(self, cpp_source):
"""Convert C++ source to complete Google Mock output source."""
# <test> is a pseudo-filename, it is not read or written.
filename = '<test>'
builder = ast.BuilderFromSource(cpp_source, filename)
ast_list = list(builder.Generate())
lines = gmock_class._GenerateMocks(filename, cpp_source, ast_list, None)
return '\n'.join(lines)
def testNamespaces(self):
source = """
namespace Foo {
namespace Bar { class Forward; }
namespace Baz {
class Test {
public:
virtual void Foo();
};
} // namespace Baz
} // namespace Foo
"""
expected = """\
namespace Foo {
namespace Baz {
class MockTest : public Test {
public:
MOCK_METHOD0(Foo,
void());
};
} // namespace Baz
} // namespace Foo
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testClassWithStorageSpecifierMacro(self):
source = """
class STORAGE_SPECIFIER Test {
public:
virtual void Foo();
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD0(Foo,
void());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testTemplatedForwardDeclaration(self):
source = """
template <class T> class Forward; // Forward declaration should be ignored.
class Test {
public:
virtual void Foo();
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD0(Foo,
void());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testTemplatedClass(self):
source = """
template <typename S, typename T>
class Test {
public:
virtual void Foo();
};
"""
expected = """\
template <typename T0, typename T1>
class MockTest : public Test<T0, T1> {
public:
MOCK_METHOD0_T(Foo,
void());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testTemplateInATemplateTypedef(self):
source = """
class Test {
public:
typedef std::vector<std::list<int>> FooType;
virtual void Bar(const FooType& test_arg);
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD1(Bar,
void(const FooType& test_arg));
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testTemplateInATemplateTypedefWithComma(self):
source = """
class Test {
public:
typedef std::function<void(
const vector<std::list<int>>&, int> FooType;
virtual void Bar(const FooType& test_arg);
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD1(Bar,
void(const FooType& test_arg));
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testEnumType(self):
source = """
class Test {
public:
enum Bar {
BAZ, QUX, QUUX, QUUUX
};
virtual void Foo();
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD0(Foo,
void());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testEnumClassType(self):
source = """
class Test {
public:
enum class Bar {
BAZ, QUX, QUUX, QUUUX
};
virtual void Foo();
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD0(Foo,
void());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
def testStdFunction(self):
source = """
class Test {
public:
Test(std::function<int(std::string)> foo) : foo_(foo) {}
virtual std::function<int(std::string)> foo();
private:
std::function<int(std::string)> foo_;
};
"""
expected = """\
class MockTest : public Test {
public:
MOCK_METHOD0(foo,
std::function<int (std::string)>());
};
"""
self.assertEqualIgnoreLeadingWhitespace(
expected, self.GenerateMocks(source))
if __name__ == '__main__':
unittest.main()