| 1 | /*
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| 2 | * Copyright (c) 2018 Vojtech Horky
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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 <pcut/pcut.h>
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| 30 | #include <fibril.h>
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| 31 | #include <perf.h>
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| 32 |
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| 33 | PCUT_INIT;
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| 34 |
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| 35 | PCUT_TEST_SUITE(perf);
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| 36 |
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| 37 | /* Checks that initialization zeroes out all entries. */
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| 38 | PCUT_TEST(zero_diff)
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| 39 | {
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| 40 | stopwatch_t sw;
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| 41 | stopwatch_init(&sw);
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| 42 | PCUT_ASSERT_INT_EQUALS(0, (int) stopwatch_get_nanos(&sw));
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| 43 | }
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| 44 |
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| 45 | /* Checks that initialization zeroes out all entries. */
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| 46 | PCUT_TEST(zero_diff_static)
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| 47 | {
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| 48 | stopwatch_t sw = STOPWATCH_INITIALIZE_STATIC;
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| 49 | PCUT_ASSERT_INT_EQUALS(0, (int) stopwatch_get_nanos(&sw));
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| 50 | }
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| 51 |
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| 52 | /* Checks that measuring 1s sleep does not give completely invalid results. */
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| 53 | PCUT_TEST(stopwatch_smokes)
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| 54 | {
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| 55 | stopwatch_t sw = STOPWATCH_INITIALIZE_STATIC;
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| 56 | stopwatch_start(&sw);
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| 57 | fibril_sleep(1);
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| 58 | stopwatch_stop(&sw);
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| 59 | nsec_t diff_nanos = stopwatch_get_nanos(&sw);
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| 60 | PCUT_ASSERT_TRUE(diff_nanos > MSEC2NSEC(500));
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| 61 | PCUT_ASSERT_TRUE(diff_nanos < SEC2NSEC(5));
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| 62 | }
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| 63 |
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| 64 | /* Checks that setting time works for small values. */
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| 65 | PCUT_TEST(stopwatch_emulation_works_small)
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| 66 | {
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| 67 | stopwatch_t sw = STOPWATCH_INITIALIZE_STATIC;
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| 68 | stopwatch_set_nanos(&sw, 42);
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| 69 | PCUT_ASSERT_INT_EQUALS(42, (int) stopwatch_get_nanos(&sw));
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| 70 | }
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| 71 |
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| 72 | /* Checks that setting time works for big values too. */
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| 73 | PCUT_TEST(stopwatch_emulation_works_big)
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| 74 | {
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| 75 | stopwatch_t sw = STOPWATCH_INITIALIZE_STATIC;
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| 76 | stopwatch_set_nanos(&sw, 4200000000021);
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| 77 | PCUT_ASSERT_EQUALS(4200000000021, (long long) stopwatch_get_nanos(&sw));
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| 78 | }
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| 79 |
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| 80 | PCUT_EXPORT(perf);
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