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// Copyright (c) 2009 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 "printing/pdf_ps_metafile_cairo.h"
#include <fcntl.h>
#include <string>
#include <vector>
#include "base/file_descriptor_posix.h"
#include "base/file_util.h"
#include "base/string_util.h"
#include "testing/gtest/include/gtest/gtest.h"
typedef struct _cairo cairo_t;
class PdfPsTest : public testing::Test {
protected:
base::FileDescriptor DevNullFD() {
return base::FileDescriptor(open("/dev/null", O_WRONLY), true);
}
};
TEST_F(PdfPsTest, Pdf) {
// Tests in-renderer constructor.
printing::PdfPsMetafile pdf(printing::PdfPsMetafile::PDF);
EXPECT_TRUE(pdf.Init());
// Renders page 1.
cairo_t* context = pdf.StartPage(72, 72, 1, 2, 3, 4);
EXPECT_TRUE(context != NULL);
EXPECT_EQ(printing::PdfPsMetafile::FromCairoContext(context), &pdf);
// In theory, we should use Cairo to draw something on |context|.
EXPECT_TRUE(pdf.FinishPage());
// Renders page 2.
context = pdf.StartPage(64, 64, 1, 2, 3, 4);
EXPECT_TRUE(context != NULL);
// In theory, we should use Cairo to draw something on |context|.
EXPECT_TRUE(pdf.FinishPage());
// Closes the file.
pdf.Close();
// Checks data size.
uint32 size = pdf.GetDataSize();
EXPECT_GT(size, 0u);
// Gets resulting data.
std::vector<char> buffer(size, 0x00);
pdf.GetData(&buffer.front(), size);
// Tests another constructor.
printing::PdfPsMetafile pdf2(printing::PdfPsMetafile::PDF);
EXPECT_TRUE(pdf2.Init(&buffer.front(), size));
// Tries to get the first 4 characters from pdf2.
std::vector<char> buffer2(4, 0x00);
pdf2.GetData(&buffer2.front(), 4);
// Tests if the header begins with "%PDF".
std::string header(&buffer2.front(), 4);
EXPECT_EQ(header.find("%PDF", 0), 0u);
// Tests if we can save data.
EXPECT_TRUE(pdf.SaveTo(DevNullFD()));
// Test overriding the metafile with raw data.
printing::PdfPsMetafile pdf3(printing::PdfPsMetafile::PDF);
EXPECT_TRUE(pdf3.Init());
context = pdf3.StartPage(72, 72, 1, 2, 3, 4);
EXPECT_TRUE(context != NULL);
std::string test_raw_data = "Dummy PDF";
EXPECT_TRUE(pdf3.SetRawData(test_raw_data.c_str(), test_raw_data.size()));
EXPECT_TRUE(pdf3.FinishPage());
pdf3.Close();
size = pdf3.GetDataSize();
EXPECT_EQ(test_raw_data.size(), size);
std::string output;
pdf3.GetData(WriteInto(&output, size + 1), size);
EXPECT_EQ(test_raw_data, output);
}
TEST_F(PdfPsTest, Ps) {
// Tests in-renderer constructor.
printing::PdfPsMetafile ps(printing::PdfPsMetafile::PS);
EXPECT_TRUE(ps.Init());
// Renders page 1.
cairo_t* context = ps.StartPage(72, 72, 1, 2, 3, 4);
EXPECT_TRUE(context != NULL);
EXPECT_EQ(printing::PdfPsMetafile::FromCairoContext(context), &ps);
// In theory, we should use Cairo to draw something on |context|.
EXPECT_TRUE(ps.FinishPage());
// Renders page 2.
context = ps.StartPage(64, 64, 1, 2, 3, 4);
EXPECT_TRUE(context != NULL);
// In theory, we should use Cairo to draw something on |context|.
EXPECT_TRUE(ps.FinishPage());
// Closes the file.
ps.Close();
// Checks data size.
uint32 size = ps.GetDataSize();
EXPECT_GT(size, 0u);
// Gets resulting data.
std::vector<char> buffer(size, 0x00);
ps.GetData(&buffer.front(), size);
// Tests another constructor.
printing::PdfPsMetafile ps2(printing::PdfPsMetafile::PS);
EXPECT_TRUE(ps2.Init(&buffer.front(), size));
// Tries to get the first 4 characters from ps2.
std::vector<char> buffer2(4, 0x00);
ps2.GetData(&buffer2.front(), 4);
// Tests if the header begins with "%!PS".
std::string header(&buffer2.front(), 4);
EXPECT_EQ(header.find("%!PS", 0), 0u);
// Tests if we can save data.
EXPECT_TRUE(ps.SaveTo(DevNullFD()));
}
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