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// Copyright 2020 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "core/fxcrt/compiler_specific.h"
#include "core/fxcrt/fx_memcpy_wrappers.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::ElementsAre;
using ::testing::IsEmpty;
TEST(CPDFSDK_HelpersTest, NulTerminateMaybeCopyAndReturnLength) {
{
const ByteString to_be_copied("toBeCopied");
constexpr size_t kExpectedToBeCopiedLen = 10;
ASSERT_EQ(kExpectedToBeCopiedLen, to_be_copied.GetLength());
EXPECT_EQ(kExpectedToBeCopiedLen + 1,
NulTerminateMaybeCopyAndReturnLength(to_be_copied,
pdfium::span<char>()));
// Buffer should not change if declared length is too short.
char buf[kExpectedToBeCopiedLen + 1];
fxcrt::spanset(pdfium::make_span(buf), 0x42);
ASSERT_EQ(kExpectedToBeCopiedLen + 1,
NulTerminateMaybeCopyAndReturnLength(
to_be_copied, UNSAFE_BUFFERS(pdfium::make_span(
buf, kExpectedToBeCopiedLen))));
for (char c : buf)
EXPECT_EQ(0x42, c);
// Buffer should copy over if long enough.
ASSERT_EQ(kExpectedToBeCopiedLen + 1,
NulTerminateMaybeCopyAndReturnLength(to_be_copied,
pdfium::make_span(buf)));
EXPECT_EQ(to_be_copied, ByteString(buf));
}
{
// Empty ByteString should still copy NUL terminator.
const ByteString empty;
char buf[1];
ASSERT_EQ(1u, NulTerminateMaybeCopyAndReturnLength(empty,
pdfium::make_span(buf)));
EXPECT_EQ(empty, ByteString(buf));
}
}
TEST(CPDFSDK_HelpersTest, ParsePageRangeString) {
EXPECT_THAT(ParsePageRangeString("", 1), IsEmpty());
EXPECT_THAT(ParsePageRangeString(" ", 1), IsEmpty());
EXPECT_THAT(ParsePageRangeString("clams", 1), IsEmpty());
EXPECT_THAT(ParsePageRangeString("0", 0), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1", 0), IsEmpty());
EXPECT_THAT(ParsePageRangeString(",1", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1,", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1,clams", 1), IsEmpty());
EXPECT_THAT(ParsePageRangeString("clams,1", 1), IsEmpty());
EXPECT_THAT(ParsePageRangeString("0-1", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-0", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-5", 4), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-11,", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString(",1-1", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-,", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("-2,", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-clams", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("clams-1,", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-2clams", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("0,1", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1,0", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-2,,,,3-4", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-2-", 10), IsEmpty());
EXPECT_THAT(ParsePageRangeString("1-1", 10), ElementsAre(0));
EXPECT_THAT(ParsePageRangeString("1", 1), ElementsAre(0));
EXPECT_THAT(ParsePageRangeString("1-4", 4), ElementsAre(0, 1, 2, 3));
EXPECT_THAT(ParsePageRangeString("1- 4", 4), ElementsAre(0, 1, 2, 3));
EXPECT_THAT(ParsePageRangeString("1 -4", 4), ElementsAre(0, 1, 2, 3));
EXPECT_THAT(ParsePageRangeString("1,2", 10), ElementsAre(0, 1));
EXPECT_THAT(ParsePageRangeString("2,1", 10), ElementsAre(1, 0));
EXPECT_THAT(ParsePageRangeString("1,50,2", 100), ElementsAre(0, 49, 1));
EXPECT_THAT(ParsePageRangeString("1-4,50", 100), ElementsAre(0, 1, 2, 3, 49));
EXPECT_THAT(ParsePageRangeString("50,1-2", 100), ElementsAre(49, 0, 1));
EXPECT_THAT(ParsePageRangeString("5 0, 1-2 ", 100),
ElementsAre(49, 0, 1)); // ???
EXPECT_THAT(ParsePageRangeString("1-3,4-6", 10),
ElementsAre(0, 1, 2, 3, 4, 5));
EXPECT_THAT(ParsePageRangeString("1-4,3-6", 10),
ElementsAre(0, 1, 2, 3, 2, 3, 4, 5));
}
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