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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <vector>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/testing/googletest.h>
#include <gtest/gtest.h>
namespace google {
namespace protobuf {
namespace io {
namespace {
// Each test repeats over several block sizes in order to test both cases
// where particular writes cross a buffer boundary and cases where they do
// not.
TEST(Printer, EmptyPrinter) {
char buffer[8192];
const int block_size = 100;
ArrayOutputStream output(buffer, GOOGLE_ARRAYSIZE(buffer), block_size);
Printer printer(&output, '\0');
EXPECT_TRUE(!printer.failed());
}
TEST(Printer, BasicPrinting) {
char buffer[8192];
for (int block_size = 1; block_size < 512; block_size *= 2) {
ArrayOutputStream output(buffer, sizeof(buffer), block_size);
{
Printer printer(&output, '\0');
printer.Print("Hello World!");
printer.Print(" This is the same line.\n");
printer.Print("But this is a new one.\nAnd this is another one.");
EXPECT_FALSE(printer.failed());
}
buffer[output.ByteCount()] = '\0';
EXPECT_STREQ(buffer,
"Hello World! This is the same line.\n"
"But this is a new one.\n"
"And this is another one.");
}
}
TEST(Printer, VariableSubstitution) {
char buffer[8192];
for (int block_size = 1; block_size < 512; block_size *= 2) {
ArrayOutputStream output(buffer, sizeof(buffer), block_size);
{
Printer printer(&output, '$');
map<string, string> vars;
vars["foo"] = "World";
vars["bar"] = "$foo$";
vars["abcdefg"] = "1234";
printer.Print(vars, "Hello $foo$!\nbar = $bar$\n");
printer.Print(vars, "$abcdefg$\nA literal dollar sign: $$");
vars["foo"] = "blah";
printer.Print(vars, "\nNow foo = $foo$.");
EXPECT_FALSE(printer.failed());
}
buffer[output.ByteCount()] = '\0';
EXPECT_STREQ(buffer,
"Hello World!\n"
"bar = $foo$\n"
"1234\n"
"A literal dollar sign: $\n"
"Now foo = blah.");
}
}
TEST(Printer, InlineVariableSubstitution) {
char buffer[8192];
ArrayOutputStream output(buffer, sizeof(buffer));
{
Printer printer(&output, '$');
printer.Print("Hello $foo$!\n", "foo", "World");
printer.Print("$foo$ $bar$\n", "foo", "one", "bar", "two");
EXPECT_FALSE(printer.failed());
}
buffer[output.ByteCount()] = '\0';
EXPECT_STREQ(buffer,
"Hello World!\n"
"one two\n");
}
TEST(Printer, Indenting) {
char buffer[8192];
for (int block_size = 1; block_size < 512; block_size *= 2) {
ArrayOutputStream output(buffer, sizeof(buffer), block_size);
{
Printer printer(&output, '$');
map<string, string> vars;
vars["newline"] = "\n";
printer.Print("This is not indented.\n");
printer.Indent();
printer.Print("This is indented\nAnd so is this\n");
printer.Outdent();
printer.Print("But this is not.");
printer.Indent();
printer.Print(" And this is still the same line.\n"
"But this is indented.\n");
printer.Print(vars, "Note that a newline in a variable will break "
"indenting, as we see$newline$here.\n");
printer.Indent();
printer.Print("And this");
printer.Outdent();
printer.Outdent();
printer.Print(" is double-indented\nBack to normal.");
EXPECT_FALSE(printer.failed());
}
buffer[output.ByteCount()] = '\0';
EXPECT_STREQ(buffer,
"This is not indented.\n"
" This is indented\n"
" And so is this\n"
"But this is not. And this is still the same line.\n"
" But this is indented.\n"
" Note that a newline in a variable will break indenting, as we see\n"
"here.\n"
" And this is double-indented\n"
"Back to normal.");
}
}
// Death tests do not work on Windows as of yet.
#ifdef GTEST_HAS_DEATH_TEST
TEST(Printer, Death) {
char buffer[8192];
ArrayOutputStream output(buffer, sizeof(buffer));
Printer printer(&output, '$');
EXPECT_DEBUG_DEATH(printer.Print("$nosuchvar$"), "Undefined variable");
EXPECT_DEBUG_DEATH(printer.Print("$unclosed"), "Unclosed variable name");
EXPECT_DEBUG_DEATH(printer.Outdent(), "without matching Indent");
}
#endif // GTEST_HAS_DEATH_TEST
TEST(Printer, WriteFailure) {
char buffer[16];
ArrayOutputStream output(buffer, sizeof(buffer));
Printer printer(&output, '$');
// Print 16 bytes to fill the buffer exactly (should not fail).
printer.Print("0123456789abcdef");
EXPECT_FALSE(printer.failed());
// Try to print one more byte (should fail).
printer.Print(" ");
EXPECT_TRUE(printer.failed());
// Should not crash
printer.Print("blah");
EXPECT_TRUE(printer.failed());
// Buffer should contain the first 16 bytes written.
EXPECT_EQ("0123456789abcdef", string(buffer, sizeof(buffer)));
}
} // namespace
} // namespace io
} // namespace protobuf
} // namespace google
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