mirror of
https://github.com/tesseract-ocr/tesseract.git
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133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
// (C) Copyright 2017, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <memory>
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#include "tabvector.h"
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#include "include_gunit.h"
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using tesseract::TabVector;
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namespace {
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class TabVectorTest : public testing::Test {
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protected:
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void SetUp() {
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std::locale::global(std::locale(""));
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vector_.reset();
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}
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void TearDown() {}
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void MakeSimpleTabVector(int x1, int y1, int x2, int y2) {
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vector_.reset(new TabVector());
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vector_->set_startpt(ICOORD(x1, y1));
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vector_->set_endpt(ICOORD(x2, y2));
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}
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std::unique_ptr<TabVector> vector_;
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};
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TEST_F(TabVectorTest, SetStartEndPointsMatch) {
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vector_.reset(new TabVector());
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ICOORD start(51, 65);
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ICOORD end(7568, 234);
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// Test coordinates individually to avoid adding an ostream operator
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// explicitly to the ICOORD class (Droid doesn't support it).
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vector_->set_startpt(start);
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EXPECT_EQ(start.x(), vector_->startpt().x());
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EXPECT_EQ(start.y(), vector_->startpt().y());
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vector_->set_endpt(end);
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EXPECT_EQ(end.x(), vector_->endpt().x());
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EXPECT_EQ(end.y(), vector_->endpt().y());
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}
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TEST_F(TabVectorTest, XAtY45DegreeSlopeInRangeExact) {
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MakeSimpleTabVector(0, 0, 100, 100);
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for (int y = 0; y <= 100; ++y) {
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int x = vector_->XAtY(y);
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EXPECT_EQ(y, x);
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}
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}
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TEST_F(TabVectorTest, XAtYVerticalInRangeExact) {
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const int x = 120; // Arbitrary choice
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MakeSimpleTabVector(x, 0, x, 100);
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for (int y = 0; y <= 100; ++y) {
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int result_x = vector_->XAtY(y);
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EXPECT_EQ(x, result_x);
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}
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}
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TEST_F(TabVectorTest, XAtYHorizontal) {
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const int y = 76; // arbitrary
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MakeSimpleTabVector(0, y, 100, y);
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EXPECT_EQ(0, vector_->XAtY(y));
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// TODO(nbeato): What's the failure condition?
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// Undefined! Should not pass! Allow until resolved answer.
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EXPECT_EQ(0, vector_->XAtY(10));
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}
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TEST_F(TabVectorTest, XAtYRoundingSimple) {
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MakeSimpleTabVector(0, 0, 2, 10000);
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int x = vector_->XAtY(1);
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EXPECT_EQ(0, x);
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x = vector_->XAtY(4999);
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EXPECT_EQ(0, x);
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x = vector_->XAtY(5001);
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EXPECT_EQ(1, x);
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x = vector_->XAtY(9999);
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EXPECT_EQ(1, x);
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}
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TEST_F(TabVectorTest, XAtYLargeNumbers) {
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// Assume a document is 800 DPI,
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// the width of a page is 10 inches across (8000 pixels), and
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// the height of the page is 15 inches (12000 pixels).
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MakeSimpleTabVector(7804, 504, 7968, 11768); // Arbitrary for vertical line
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int x = vector_->XAtY(6136); // test mid point
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EXPECT_EQ(7886, x);
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}
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TEST_F(TabVectorTest, XAtYHorizontalInRangeExact) {
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const int y = 120; // Arbitrary choice
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MakeSimpleTabVector(50, y, 150, y);
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int x = vector_->XAtY(y);
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EXPECT_EQ(50, x);
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}
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TEST_F(TabVectorTest, VOverlapInRangeSimple) {
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MakeSimpleTabVector(0, 0, 100, 100);
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int overlap = vector_->VOverlap(90, 10);
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EXPECT_EQ(80, overlap);
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overlap = vector_->VOverlap(100, 0);
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EXPECT_EQ(100, overlap);
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}
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TEST_F(TabVectorTest, VOverlapOutOfRange) {
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MakeSimpleTabVector(0, 10, 100, 90);
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int overlap = vector_->VOverlap(100, 0);
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EXPECT_EQ(80, overlap);
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}
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TEST_F(TabVectorTest, XYFlip) {
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MakeSimpleTabVector(1, 2, 3, 4);
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vector_->XYFlip();
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EXPECT_EQ(2, vector_->startpt().x());
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EXPECT_EQ(1, vector_->startpt().y());
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EXPECT_EQ(4, vector_->endpt().x());
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EXPECT_EQ(3, vector_->endpt().y());
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}
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} // namespace
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