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// Copyright (C) 2014-2018 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <exceptions/exceptions.h>
#include <gtest/gtest.h>
#include <cc/data.h>
#include <fstream>
using namespace isc;
using namespace isc::data;
namespace {
/// @brief Test class for testing Daemon class
class DataFileTest : public ::testing::Test {
public:
/// @brief writes specified text to a file
///
/// That is an auxiliary function used in fileRead() tests.
///
/// @param content text to be written to disk
void writeFile(const std::string& content) {
// Write sample content to disk
static_cast<void>(remove(TEMP_FILE));
std::ofstream write_me(TEMP_FILE);
EXPECT_TRUE(write_me.is_open());
write_me << content;
write_me.close();
}
/// destructor
~DataFileTest() {
static_cast<void>(remove(TEMP_FILE));
}
/// Name of the temporary file
static const char* TEMP_FILE;
};
/// Temporary file name used in some tests
const char* DataFileTest::TEMP_FILE="temp-file.json";
// Test checks whether a text file can be read from disk.
TEST_F(DataFileTest, readFileMultiline) {
const char* no_endline = "{ \"abc\": 123 }";
const char* with_endline = "{\n \"abc\":\n 123\n }\n";
// That's what we expect
ElementPtr exp = Element::fromJSON(no_endline);
// Write sample content to disk
writeFile(no_endline);
// Check that the read content is correct
EXPECT_TRUE(exp->equals(*Element::fromJSONFile(TEMP_FILE)));
// Write sample content to disk
writeFile(with_endline);
// Check that the read content is correct
EXPECT_TRUE(exp->equals(*Element::fromJSONFile(TEMP_FILE)));
}
// Test checks whether comments in file are ignored as expected.
TEST_F(DataFileTest, readFileComments) {
const char* commented_content = "# This is a comment\n"
"{ \"abc\":\n"
"# a comment comment\n"
"1 }\n";
// That's what we expect
ElementPtr exp = Element::fromJSON("{ \"abc\": 1 }");
// Write sample content to disk
writeFile(commented_content);
// Check that the read will fail (without comment elimination)
EXPECT_THROW(Element::fromJSONFile(TEMP_FILE), JSONError);
// Check that the read content is correct (with comment elimination)
EXPECT_NO_THROW(Element::fromJSONFile(TEMP_FILE, true));
EXPECT_TRUE(exp->equals(*Element::fromJSONFile(TEMP_FILE, true)));
}
// This test checks that missing file will generate an exception.
TEST_F(DataFileTest, readFileError) {
// Check that the read content is correct
EXPECT_THROW(Element::fromJSONFile("no-such-file.txt"), isc::InvalidOperation);
}
};
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