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https://github.com/tesseract-ocr/tesseract.git
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70 lines
2.4 KiB
C++
70 lines
2.4 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 <algorithm>
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#include <vector>
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#include "cycletimer.h"
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#include "include_gunit.h"
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#include "log.h"
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#include "qrsequence.h"
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namespace tesseract {
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class TestableQRSequenceGenerator : public QRSequenceGenerator {
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public:
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explicit TestableQRSequenceGenerator(const int &N) : QRSequenceGenerator(N) {}
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// Overriding scope for testing
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using QRSequenceGenerator::GetBinaryReversedInteger;
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};
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// Verifies binary inversion for a small range.
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TEST(QRSequenceGenerator, GetBinaryReversedInteger) {
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const int kRangeSize = 8;
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TestableQRSequenceGenerator generator(kRangeSize);
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int reversed_vals[kRangeSize] = {0, 4, 2, 6, 1, 5, 3, 7};
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for (int i = 0; i < kRangeSize; ++i)
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EXPECT_EQ(reversed_vals[i], generator.GetBinaryReversedInteger(i));
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}
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// Trivial test fixture for a parameterized test.
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class QRSequenceGeneratorTest : public ::testing::TestWithParam<int> {
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protected:
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void SetUp() {
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std::locale::global(std::locale(""));
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}
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};
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TEST_P(QRSequenceGeneratorTest, GeneratesValidSequence) {
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const int kRangeSize = GetParam();
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TestableQRSequenceGenerator generator(kRangeSize);
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std::vector<int> vals(kRangeSize);
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CycleTimer timer;
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timer.Restart();
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for (int i = 0; i < kRangeSize; ++i)
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vals[i] = generator.GetVal();
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LOG(INFO) << kRangeSize << "-length sequence took " << timer.GetInMs() << "ms";
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// Sort the numbers to verify that we've covered the range without repetition.
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std::sort(vals.begin(), vals.end());
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for (int i = 0; i < kRangeSize; ++i) {
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EXPECT_EQ(i, vals[i]);
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if (i != vals[i]) {
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LOG(INFO) << "Aborting remaining comparisons";
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break;
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}
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}
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}
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// Run a parameterized test using the following range sizes.
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INSTANTIATE_TEST_SUITE_P(RangeTest, QRSequenceGeneratorTest,
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::testing::Values(2, 7, 8, 9, 16, 1e2, 1e4, 1e6));
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} // namespace tesseract
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