| 1 | /*
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| 2 | * Copyright (c) 2021 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include <codepage/cp437.h>
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| 30 | #include <pcut/pcut.h>
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| 31 |
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| 32 | PCUT_INIT;
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| 33 |
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| 34 | PCUT_TEST_SUITE(cp437);
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| 35 |
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| 36 | /** Encode(decode) == identity */
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| 37 | PCUT_TEST(decode_encode)
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| 38 | {
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| 39 | unsigned code;
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| 40 | char32_t c;
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| 41 | uint8_t cdec;
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| 42 | errno_t rc;
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| 43 |
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| 44 | for (code = 0; code < 256; code++) {
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| 45 | c = cp437_decode(code);
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| 46 | rc = cp437_encode(c, &cdec);
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| 47 | PCUT_ASSERT_ERRNO_VAL(EOK, rc);
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| 48 | PCUT_ASSERT_EQUALS(code, cdec);
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| 49 | }
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| 50 | }
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| 51 |
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| 52 | /** Test limit encoding cases */
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| 53 | PCUT_TEST(encode_cases)
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| 54 | {
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| 55 | uint8_t code;
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| 56 | errno_t rc;
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| 57 |
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| 58 | /* Zero maps to zero */
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| 59 | rc = cp437_encode(0, &code);
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| 60 | PCUT_ASSERT_ERRNO_VAL(EOK, rc);
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| 61 | PCUT_ASSERT_EQUALS(0x00, code);
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| 62 |
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| 63 | /* Last entry in the 0x0000-0x03ff table is unmapped */
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| 64 | rc = cp437_encode(0x3ff, &code);
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| 65 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 66 |
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| 67 | /* 0x0400 is out of range of first table */
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| 68 | rc = cp437_encode(0x400, &code);
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| 69 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 70 |
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| 71 | /* 0x1fff is before start of 0x2000-0x26ff table */
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| 72 | rc = cp437_encode(0x1fff, &code);
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| 73 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 74 |
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| 75 | /* First entry in 0x2000-0x26ff table is unmapped */
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| 76 | rc = cp437_encode(0x2000, &code);
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| 77 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 78 |
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| 79 | /* Last entry in 0x2000-0x26ff table is unmapped */
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| 80 | rc = cp437_encode(0x26ff, &code);
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| 81 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 82 |
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| 83 | /* 0x2700 is beyond the end of 0x2000-0x26ff table */
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| 84 | rc = cp437_encode(0x2700, &code);
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| 85 | PCUT_ASSERT_ERRNO_VAL(EDOM, rc);
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| 86 | }
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| 87 |
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| 88 | PCUT_EXPORT(cp437);
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