mirror of
https://github.com/tesseract-ocr/tesseract.git
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116 lines
3.7 KiB
C++
116 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 <iostream> // for cout
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#include "include_gunit.h"
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#include "scanutils.h"
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namespace tesseract {
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class ScanutilsTest : public ::testing::Test {
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protected:
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void SetUp() override {}
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};
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TEST_F(ScanutilsTest, DoesScanf) {
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// This test verifies that tfscanf does Scanf the same as stdio fscanf.
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// There are probably a gazillion more test cases that could be added, but
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// these brought the tesseract and unittest test results in line.
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std::string filename = file::JoinPath(TESTDATA_DIR, "scanftest.txt");
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FILE *fp1 = fopen(filename.c_str(), "r");
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if (fp1 == nullptr) {
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std::cout << "Failed to open file " << filename << '\n';
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GTEST_SKIP();
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}
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FILE *fp2 = fopen(filename.c_str(), "r");
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if (fp2 == nullptr) {
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std::cout << "Failed to open file " << filename << '\n';
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fclose(fp1);
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GTEST_SKIP();
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}
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// The file contains this:
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// 42.5 17 0.001000 -0.001000
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// 0 1 123 -123 0x100
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// abcdefghijklmnopqrstuvwxyz
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// abcdefghijklmnopqrstuvwxyz
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// MF 25 6.25e-2 0.5e5 -1e+4
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// 42 MF 25 6.25e-2 0.5
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// 24
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const int kNumFloats = 4;
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float f1[kNumFloats], f2[kNumFloats];
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int r1 = fscanf(fp1, "%f %f %f %f", &f1[0], &f1[1], &f1[2], &f1[3]);
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int r2 = tfscanf(fp2, "%f %f %f %f", &f2[0], &f2[1], &f2[2], &f2[3]);
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EXPECT_EQ(r1, kNumFloats);
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EXPECT_EQ(r2, kNumFloats);
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if (r1 == r2) {
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for (int i = 0; i < r1; ++i) {
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EXPECT_FLOAT_EQ(f1[i], f2[i]);
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}
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}
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const int kNumInts = 5;
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int i1[kNumInts], i2[kNumInts];
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r1 = fscanf(fp1, "%d %d %d %d %i", &i1[0], &i1[1], &i1[2], &i1[3], &i1[4]);
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r2 = tfscanf(fp2, "%d %d %d %d %i", &i2[0], &i2[1], &i2[2], &i2[3], &i2[4]);
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EXPECT_EQ(r1, kNumInts);
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EXPECT_EQ(r2, kNumInts);
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if (r1 == r2) {
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for (int i = 0; i < kNumInts; ++i) {
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EXPECT_EQ(i1[i], i2[i]);
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}
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}
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const int kStrLen = 1024;
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char s1[kStrLen];
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char s2[kStrLen];
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r1 = fscanf(fp1, "%1023s", s1);
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r2 = tfscanf(fp2, "%1023s", s2);
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EXPECT_EQ(r1, r2);
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EXPECT_STREQ(s1, s2);
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EXPECT_EQ(26, strlen(s2));
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r1 = fscanf(fp1, "%20s", s1);
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r2 = tfscanf(fp2, "%20s", s2);
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EXPECT_EQ(r1, r2);
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EXPECT_STREQ(s1, s2);
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EXPECT_EQ(20, strlen(s2));
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// Now read the rest of the alphabet.
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r1 = fscanf(fp1, "%1023s", s1);
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r2 = tfscanf(fp2, "%1023s", s2);
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EXPECT_EQ(r1, r2);
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EXPECT_STREQ(s1, s2);
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EXPECT_EQ(6, strlen(s2));
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r1 = fscanf(fp1, "%1023s", s1);
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r2 = tfscanf(fp2, "%1023s", s2);
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EXPECT_EQ(r1, r2);
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EXPECT_STREQ(s1, s2);
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EXPECT_EQ(2, strlen(s2));
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r1 = fscanf(fp1, "%f %f %f %f", &f1[0], &f1[1], &f1[2], &f1[3]);
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r2 = tfscanf(fp2, "%f %f %f %f", &f2[0], &f2[1], &f2[2], &f2[3]);
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EXPECT_EQ(r1, r2);
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for (int i = 0; i < kNumFloats; ++i) {
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EXPECT_FLOAT_EQ(f1[i], f2[i]);
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}
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// Test the * for field suppression.
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r1 = fscanf(fp1, "%d %*s %*d %*f %*f", &i1[0]);
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r2 = tfscanf(fp2, "%d %*s %*d %*f %*f", &i2[0]);
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EXPECT_EQ(r1, r2);
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EXPECT_EQ(i1[0], i2[0]);
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// We should still see the next value and no phantoms.
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r1 = fscanf(fp1, "%d %1023s", &i1[0], s1);
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r2 = tfscanf(fp2, "%d %1023s", &i2[0], s2);
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EXPECT_EQ(r1, r2);
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EXPECT_EQ(1, r2);
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EXPECT_EQ(i1[0], i2[0]);
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fclose(fp2);
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fclose(fp1);
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}
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} // namespace tesseract
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