You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.8 KiB
70 lines
2.8 KiB
// Copyright 2016 PDFium 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 "core/fxcrt/fx_string.h" |
|
#include "public/fpdf_structtree.h" |
|
#include "testing/embedder_test.h" |
|
#include "testing/test_support.h" |
|
|
|
class FPDFStructTreeEmbeddertest : public EmbedderTest, public TestSaver {}; |
|
|
|
TEST_F(FPDFStructTreeEmbeddertest, GetAltText) { |
|
ASSERT_TRUE(OpenDocument("tagged_alt_text.pdf")); |
|
FPDF_PAGE page = LoadPage(0); |
|
ASSERT_TRUE(page); |
|
|
|
FPDF_STRUCTTREE struct_tree = FPDF_StructTree_GetForPage(page); |
|
ASSERT_TRUE(struct_tree); |
|
ASSERT_EQ(1, FPDF_StructTree_CountChildren(struct_tree)); |
|
|
|
FPDF_STRUCTELEMENT element = FPDF_StructTree_GetChildAtIndex(struct_tree, -1); |
|
EXPECT_EQ(nullptr, element); |
|
element = FPDF_StructTree_GetChildAtIndex(struct_tree, 1); |
|
EXPECT_EQ(nullptr, element); |
|
element = FPDF_StructTree_GetChildAtIndex(struct_tree, 0); |
|
ASSERT_NE(nullptr, element); |
|
EXPECT_EQ(0U, FPDF_StructElement_GetAltText(element, nullptr, 0)); |
|
|
|
ASSERT_EQ(1, FPDF_StructElement_CountChildren(element)); |
|
FPDF_STRUCTELEMENT child_element = |
|
FPDF_StructElement_GetChildAtIndex(element, -1); |
|
EXPECT_EQ(nullptr, child_element); |
|
child_element = FPDF_StructElement_GetChildAtIndex(element, 1); |
|
EXPECT_EQ(nullptr, child_element); |
|
child_element = FPDF_StructElement_GetChildAtIndex(element, 0); |
|
ASSERT_NE(nullptr, child_element); |
|
EXPECT_EQ(0U, FPDF_StructElement_GetAltText(child_element, nullptr, 0)); |
|
|
|
ASSERT_EQ(1, FPDF_StructElement_CountChildren(child_element)); |
|
FPDF_STRUCTELEMENT gchild_element = |
|
FPDF_StructElement_GetChildAtIndex(child_element, -1); |
|
EXPECT_EQ(nullptr, gchild_element); |
|
gchild_element = FPDF_StructElement_GetChildAtIndex(child_element, 1); |
|
EXPECT_EQ(nullptr, gchild_element); |
|
gchild_element = FPDF_StructElement_GetChildAtIndex(child_element, 0); |
|
ASSERT_NE(nullptr, gchild_element); |
|
ASSERT_EQ(24U, FPDF_StructElement_GetAltText(gchild_element, nullptr, 0)); |
|
|
|
unsigned short buffer[12]; |
|
memset(buffer, 0, sizeof(buffer)); |
|
// Deliberately pass in a small buffer size to make sure |buffer| remains |
|
// untouched. |
|
ASSERT_EQ(24U, FPDF_StructElement_GetAltText(gchild_element, buffer, 1)); |
|
for (size_t i = 0; i < FX_ArraySize(buffer); ++i) |
|
EXPECT_EQ(0U, buffer[i]); |
|
|
|
ASSERT_EQ(24U, FPDF_StructElement_GetAltText(gchild_element, buffer, |
|
sizeof(buffer))); |
|
const FX_WCHAR kExpected[] = L"Black Image"; |
|
EXPECT_EQ(CFX_WideString(kExpected), |
|
CFX_WideString::FromUTF16LE(buffer, FXSYS_len(kExpected))); |
|
|
|
ASSERT_EQ(1, FPDF_StructElement_CountChildren(gchild_element)); |
|
FPDF_STRUCTELEMENT ggchild_element = |
|
FPDF_StructElement_GetChildAtIndex(gchild_element, 0); |
|
EXPECT_EQ(nullptr, ggchild_element); |
|
|
|
FPDF_StructTree_Close(struct_tree); |
|
FPDF_ClosePage(page); |
|
}
|
|
|