3cddd56e19
Mark more functions with "override" keyword, just like
it was done in commit 2460f97152.
This should prevent compiler from complaining while compiling both
user code, and the googletest code itself with the -Wsuggest-override
option turned on; with the exception of:
* calls to new MOCK_METHOD() in test/gmock-function-mocker_test.cc
* calls to old MOCK_METHODx()/MOCK_CONST_METHODx() in other
unit test files.
Closes #2493
347 lines
12 KiB
C++
347 lines
12 KiB
C++
$$ -*- mode: c++; -*-
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$$ This is a Pump source file. Please use Pump to convert
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$$ it to gmock-generated-matchers.h.
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$$
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$var n = 10 $$ The maximum arity we support.
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$$ }} This line fixes auto-indentation of the following code in Emacs.
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// Copyright 2008, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Google Mock - a framework for writing C++ mock classes.
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//
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// This file implements some commonly used variadic matchers.
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// GOOGLETEST_CM0002 DO NOT DELETE
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#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
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#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
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#include <iterator>
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#include <sstream>
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#include <string>
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#include <utility>
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#include <vector>
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#include "gmock/gmock-matchers.h"
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// The MATCHER* family of macros can be used in a namespace scope to
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// define custom matchers easily.
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//
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// Basic Usage
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// ===========
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//
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// The syntax
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//
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// MATCHER(name, description_string) { statements; }
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//
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// defines a matcher with the given name that executes the statements,
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// which must return a bool to indicate if the match succeeds. Inside
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// the statements, you can refer to the value being matched by 'arg',
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// and refer to its type by 'arg_type'.
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//
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// The description string documents what the matcher does, and is used
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// to generate the failure message when the match fails. Since a
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// MATCHER() is usually defined in a header file shared by multiple
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// C++ source files, we require the description to be a C-string
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// literal to avoid possible side effects. It can be empty, in which
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// case we'll use the sequence of words in the matcher name as the
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// description.
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//
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// For example:
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//
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// MATCHER(IsEven, "") { return (arg % 2) == 0; }
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//
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// allows you to write
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//
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// // Expects mock_foo.Bar(n) to be called where n is even.
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// EXPECT_CALL(mock_foo, Bar(IsEven()));
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//
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// or,
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//
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// // Verifies that the value of some_expression is even.
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// EXPECT_THAT(some_expression, IsEven());
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//
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// If the above assertion fails, it will print something like:
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//
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// Value of: some_expression
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// Expected: is even
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// Actual: 7
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//
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// where the description "is even" is automatically calculated from the
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// matcher name IsEven.
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//
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// Argument Type
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// =============
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//
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// Note that the type of the value being matched (arg_type) is
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// determined by the context in which you use the matcher and is
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// supplied to you by the compiler, so you don't need to worry about
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// declaring it (nor can you). This allows the matcher to be
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// polymorphic. For example, IsEven() can be used to match any type
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// where the value of "(arg % 2) == 0" can be implicitly converted to
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// a bool. In the "Bar(IsEven())" example above, if method Bar()
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// takes an int, 'arg_type' will be int; if it takes an unsigned long,
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// 'arg_type' will be unsigned long; and so on.
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//
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// Parameterizing Matchers
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// =======================
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//
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// Sometimes you'll want to parameterize the matcher. For that you
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// can use another macro:
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//
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// MATCHER_P(name, param_name, description_string) { statements; }
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//
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// For example:
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//
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// MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
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//
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// will allow you to write:
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//
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// EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
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//
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// which may lead to this message (assuming n is 10):
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//
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// Value of: Blah("a")
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// Expected: has absolute value 10
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// Actual: -9
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//
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// Note that both the matcher description and its parameter are
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// printed, making the message human-friendly.
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//
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// In the matcher definition body, you can write 'foo_type' to
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// reference the type of a parameter named 'foo'. For example, in the
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// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
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// 'value_type' to refer to the type of 'value'.
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//
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// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P$n to
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// support multi-parameter matchers.
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//
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// Describing Parameterized Matchers
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// =================================
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//
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// The last argument to MATCHER*() is a string-typed expression. The
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// expression can reference all of the matcher's parameters and a
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// special bool-typed variable named 'negation'. When 'negation' is
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// false, the expression should evaluate to the matcher's description;
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// otherwise it should evaluate to the description of the negation of
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// the matcher. For example,
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//
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// using testing::PrintToString;
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//
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// MATCHER_P2(InClosedRange, low, hi,
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// std::string(negation ? "is not" : "is") + " in range [" +
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// PrintToString(low) + ", " + PrintToString(hi) + "]") {
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// return low <= arg && arg <= hi;
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// }
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// ...
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// EXPECT_THAT(3, InClosedRange(4, 6));
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// EXPECT_THAT(3, Not(InClosedRange(2, 4)));
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//
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// would generate two failures that contain the text:
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//
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// Expected: is in range [4, 6]
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// ...
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// Expected: is not in range [2, 4]
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//
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// If you specify "" as the description, the failure message will
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// contain the sequence of words in the matcher name followed by the
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// parameter values printed as a tuple. For example,
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//
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// MATCHER_P2(InClosedRange, low, hi, "") { ... }
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// ...
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// EXPECT_THAT(3, InClosedRange(4, 6));
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// EXPECT_THAT(3, Not(InClosedRange(2, 4)));
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//
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// would generate two failures that contain the text:
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//
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// Expected: in closed range (4, 6)
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// ...
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// Expected: not (in closed range (2, 4))
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//
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// Types of Matcher Parameters
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// ===========================
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//
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// For the purpose of typing, you can view
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//
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// MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
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//
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// as shorthand for
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//
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// template <typename p1_type, ..., typename pk_type>
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// FooMatcherPk<p1_type, ..., pk_type>
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// Foo(p1_type p1, ..., pk_type pk) { ... }
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//
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// When you write Foo(v1, ..., vk), the compiler infers the types of
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// the parameters v1, ..., and vk for you. If you are not happy with
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// the result of the type inference, you can specify the types by
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// explicitly instantiating the template, as in Foo<long, bool>(5,
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// false). As said earlier, you don't get to (or need to) specify
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// 'arg_type' as that's determined by the context in which the matcher
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// is used. You can assign the result of expression Foo(p1, ..., pk)
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// to a variable of type FooMatcherPk<p1_type, ..., pk_type>. This
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// can be useful when composing matchers.
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//
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// While you can instantiate a matcher template with reference types,
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// passing the parameters by pointer usually makes your code more
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// readable. If, however, you still want to pass a parameter by
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// reference, be aware that in the failure message generated by the
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// matcher you will see the value of the referenced object but not its
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// address.
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//
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// Explaining Match Results
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// ========================
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//
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// Sometimes the matcher description alone isn't enough to explain why
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// the match has failed or succeeded. For example, when expecting a
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// long string, it can be very helpful to also print the diff between
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// the expected string and the actual one. To achieve that, you can
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// optionally stream additional information to a special variable
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// named result_listener, whose type is a pointer to class
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// MatchResultListener:
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//
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// MATCHER_P(EqualsLongString, str, "") {
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// if (arg == str) return true;
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//
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// *result_listener << "the difference: "
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/// << DiffStrings(str, arg);
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// return false;
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// }
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//
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// Overloading Matchers
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// ====================
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//
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// You can overload matchers with different numbers of parameters:
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//
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// MATCHER_P(Blah, a, description_string1) { ... }
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// MATCHER_P2(Blah, a, b, description_string2) { ... }
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//
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// Caveats
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// =======
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//
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// When defining a new matcher, you should also consider implementing
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// MatcherInterface or using MakePolymorphicMatcher(). These
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// approaches require more work than the MATCHER* macros, but also
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// give you more control on the types of the value being matched and
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// the matcher parameters, which may leads to better compiler error
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// messages when the matcher is used wrong. They also allow
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// overloading matchers based on parameter types (as opposed to just
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// based on the number of parameters).
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//
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// MATCHER*() can only be used in a namespace scope as templates cannot be
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// declared inside of a local class.
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//
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// More Information
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// ================
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//
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// To learn more about using these macros, please search for 'MATCHER'
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// on
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// https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md
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$range i 0..n
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$for i
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[[
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$var macro_name = [[$if i==0 [[MATCHER]] $elif i==1 [[MATCHER_P]]
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$else [[MATCHER_P$i]]]]
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$var class_name = [[name##Matcher[[$if i==0 [[]] $elif i==1 [[P]]
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$else [[P$i]]]]]]
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$range j 0..i-1
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$var template = [[$if i==0 [[]] $else [[
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template <$for j, [[typename p$j##_type]]>\
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]]]]
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$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
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$var impl_ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
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$var impl_inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
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$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::move(gmock_p$j))]]]]]]
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$var params = [[$for j, [[p$j]]]]
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$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
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$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
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$var param_field_decls = [[$for j
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[[
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p$j##_type const p$j;\
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]]]]
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$var param_field_decls2 = [[$for j
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[[
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p$j##_type const p$j;\
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]]]]
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#define $macro_name(name$for j [[, p$j]], description)\$template
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class $class_name {\
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public:\
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template <typename arg_type>\
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class gmock_Impl : public ::testing::MatcherInterface<\
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GTEST_REFERENCE_TO_CONST_(arg_type)> {\
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public:\
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[[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
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$impl_inits {}\
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bool MatchAndExplain(\
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GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
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::testing::MatchResultListener* result_listener) const override;\
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void DescribeTo(::std::ostream* gmock_os) const override {\
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*gmock_os << FormatDescription(false);\
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}\
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void DescribeNegationTo(::std::ostream* gmock_os) const override {\
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*gmock_os << FormatDescription(true);\
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}\$param_field_decls
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private:\
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::std::string FormatDescription(bool negation) const {\
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::std::string gmock_description = (description);\
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if (!gmock_description.empty()) {\
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return gmock_description;\
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}\
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return ::testing::internal::FormatMatcherDescription(\
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negation, #name, \
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::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
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::std::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]])));\
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}\
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};\
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template <typename arg_type>\
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operator ::testing::Matcher<arg_type>() const {\
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return ::testing::Matcher<arg_type>(\
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new gmock_Impl<arg_type>($params));\
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}\
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[[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {\
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}\$param_field_decls2
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private:\
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};\$template
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inline $class_name$param_types name($param_types_and_names) {\
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return $class_name$param_types($params);\
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}\$template
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template <typename arg_type>\
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bool $class_name$param_types::gmock_Impl<arg_type>::MatchAndExplain(\
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GTEST_REFERENCE_TO_CONST_(arg_type) arg,\
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::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
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const
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]]
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#endif // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
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