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// Copyright (c) 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.
#include "testing/gtest/include/gtest/gtest.h"
#include "tools/gn/err.h"
#include "tools/gn/scope.h"
#include "tools/gn/settings.h"
#include "tools/gn/string_utils.h"
#include "tools/gn/token.h"
#include "tools/gn/value.h"
namespace {
bool CheckExpansionCase(const char* input, const char* expected, bool success) {
Scope scope(static_cast<const Settings*>(NULL));
int64 one = 1;
scope.SetValue("one", Value(NULL, one), NULL);
scope.SetValue("onestring", Value(NULL, "one"), NULL);
// Construct the string token, which includes the quotes.
std::string literal_string;
literal_string.push_back('"');
literal_string.append(input);
literal_string.push_back('"');
Token literal(Location(), Token::STRING, literal_string);
Value result(NULL, Value::STRING);
Err err;
bool ret = ExpandStringLiteral(&scope, literal, &result, &err);
// Err and return value should agree.
EXPECT_NE(ret, err.has_error());
if (ret != success)
return false;
if (!success)
return true; // Don't check result on failure.
return result.string_value() == expected;
}
} // namespace
TEST(StringUtils, ExpandStringLiteral) {
EXPECT_TRUE(CheckExpansionCase("", "", true));
EXPECT_TRUE(CheckExpansionCase("hello", "hello", true));
EXPECT_TRUE(CheckExpansionCase("hello #$one", "hello #1", true));
EXPECT_TRUE(CheckExpansionCase("hello #$one/two", "hello #1/two", true));
EXPECT_TRUE(CheckExpansionCase("hello #${one}", "hello #1", true));
EXPECT_TRUE(CheckExpansionCase("hello #${one}one", "hello #1one", true));
EXPECT_TRUE(CheckExpansionCase("hello #${one}$one", "hello #11", true));
EXPECT_TRUE(CheckExpansionCase("$onestring${one}$one", "one11", true));
// Errors
EXPECT_TRUE(CheckExpansionCase("hello #$", NULL, false));
EXPECT_TRUE(CheckExpansionCase("hello #$%", NULL, false));
EXPECT_TRUE(CheckExpansionCase("hello #${", NULL, false));
EXPECT_TRUE(CheckExpansionCase("hello #${}", NULL, false));
EXPECT_TRUE(CheckExpansionCase("hello #$nonexistant", NULL, false));
EXPECT_TRUE(CheckExpansionCase("hello #${unterminated", NULL, false));
// Unknown backslash values aren't special.
EXPECT_TRUE(CheckExpansionCase("\\", "\\", true));
EXPECT_TRUE(CheckExpansionCase("\\b", "\\b", true));
// Backslashes escape some special things. \"\$\\ -> "$\ Note that gtest
// doesn't like this escape sequence so we have to put it out-of-line.
const char* in = "\\\"\\$\\\\";
const char* out = "\"$\\";
EXPECT_TRUE(CheckExpansionCase(in, out, true));
}
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