From 9067fd683ebf8d6467f8cc5aa7daf5e1f950f846 Mon Sep 17 00:00:00 2001 From: thestig Date: Wed, 23 Nov 2016 14:10:06 -0800 Subject: Add APIs for limited use of document tagged code. BUG=pdfium:568 Review-Url: https://codereview.chromium.org/2519343002 --- fpdfsdk/fpdf_structtree_embeddertest.cpp | 70 ++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 fpdfsdk/fpdf_structtree_embeddertest.cpp (limited to 'fpdfsdk/fpdf_structtree_embeddertest.cpp') diff --git a/fpdfsdk/fpdf_structtree_embeddertest.cpp b/fpdfsdk/fpdf_structtree_embeddertest.cpp new file mode 100644 index 0000000000..58b3172057 --- /dev/null +++ b/fpdfsdk/fpdf_structtree_embeddertest.cpp @@ -0,0 +1,70 @@ +// 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); +} -- cgit v1.2.3