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742ae63e8c
When read_bytes() is given a negative start offset that would reach before the start of the file, use the file start instead of returning 0. Returning 0 is not warrented because there is something to read, starting at the beginning of the file.
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* Tests for read_bytes():
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*
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* Test negative start offsets given to efun::read_bytes()
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*/
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#include "/inc/base.inc"
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private struct testCase
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{
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string name;
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int start;
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int end;
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bytes expected;
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};
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void run_test()
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{
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string filename = "small.file.txt";
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bytes full_content = read_bytes(filename);
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int errors = 0;
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struct testCase *test_cases =
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({
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(<testCase> "0 start offset, no size", 0, 0, full_content),
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(<testCase> "0 start offset, 4 size", 0, 4, full_content[0..3]),
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(<testCase> "2 start offset, no size", 2, 0, full_content[2..]),
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(<testCase> "2 start offset, 4 size", 2, 4, full_content[2..5]),
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(<testCase> "-8 start offset, no size", -8, 0, full_content[<8..]),
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(<testCase> "-8 start offset, 4 size", -8, 4, full_content[<8..<5]),
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(<testCase> "-9999 start offset, no size", -9999, 0, full_content),
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(<testCase> "-9999 start offset, 4 size", -9999, 4, full_content[..3]),
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});
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msg("\nRunning test for read_bytes():\n"
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"------------------------------\n");
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foreach(struct testCase test: test_cases)
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{
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bytes result;
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msg("Running Test %s... ", test->name);
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if (test->end)
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result = read_bytes(filename, test->start, test->end);
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else
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result = read_bytes(filename, test->start);
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if (bytesp(result) && result == test->expected)
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msg("Success.\n");
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else
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{
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msg("FAILED. Got %Q, expected %Q.\n",
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bytesp(result) ? to_text(result, "UTF-8") : result,
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to_text(test->expected, "UTF-8"));
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errors++;
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}
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}
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shutdown(errors != 0);
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}
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string *epilog(int eflag)
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{
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run_test();
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return 0;
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}
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