LCOV - code coverage report
Current view: top level - drivers - test-tapdisk-stats.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 26 26 100.0 %
Date: 2022-01-12 12:43:54 Functions: 3 3 100.0 %
Branches: 4 4 100.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (c) 2018, Citrix Systems, Inc.
       3                 :            :  *
       4                 :            :  * All rights reserved.
       5                 :            :  *
       6                 :            :  * Redistribution and use in source and binary forms, with or without
       7                 :            :  * modification, are permitted provided that the following conditions are met:
       8                 :            :  * 
       9                 :            :  *  1. Redistributions of source code must retain the above copyright
      10                 :            :  *     notice, this list of conditions and the following disclaimer.
      11                 :            :  *  2. Redistributions in binary form must reproduce the above copyright
      12                 :            :  *     notice, this list of conditions and the following disclaimer in the
      13                 :            :  *     documentation and/or other materials provided with the distribution.
      14                 :            :  *  3. Neither the name of the copyright holder nor the names of its 
      15                 :            :  *     contributors may be used to endorse or promote products derived from 
      16                 :            :  *     this software without specific prior written permission.
      17                 :            :  *
      18                 :            :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      19                 :            :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      20                 :            :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      21                 :            :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
      22                 :            :  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
      23                 :            :  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
      24                 :            :  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
      25                 :            :  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
      26                 :            :  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
      27                 :            :  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
      28                 :            :  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      29                 :            :  */
      30                 :            : 
      31                 :            : #include <stddef.h>
      32                 :            : #include <stdarg.h>
      33                 :            : #include <setjmp.h>
      34                 :            : #include <cmocka.h>
      35                 :            : #include <stdlib.h>
      36                 :            : 
      37                 :            : #include "test-suites.h"
      38                 :            : 
      39                 :            : #include "tapdisk-stats.h"
      40                 :            : 
      41                 :            : #define TD_CTL_TEST_BUFSIZ ((size_t)64)
      42                 :            : 
      43                 :            : /* Test that filling a normal stats buffer produces the
      44                 :            :  * expected output */
      45                 :            : void
      46                 :          1 : test_stats_normal_buffer(void **state)
      47                 :            : {
      48                 :            :         td_stats_t      st;
      49                 :            :         char            *buf;
      50                 :            : 
      51                 :          1 :         buf = malloc(TD_CTL_TEST_BUFSIZ);
      52                 :          1 :         assert_non_null(buf);
      53                 :            : 
      54                 :            :         tapdisk_stats_init(&st, buf, TD_CTL_TEST_BUFSIZ);
      55                 :            : 
      56                 :          1 :         tapdisk_stats_enter(&st, '{');
      57                 :          1 :         tapdisk_stats_val(&st, "d", 123456789);
      58                 :          1 :         tapdisk_stats_leave(&st, '}');
      59                 :            : 
      60                 :          1 :         assert_string_equal((char*)st.buf, "{ 123456789 }");
      61                 :            : 
      62                 :            :         /* tapdisk_stats_init() put buf into st->buf and in the general case
      63                 :            :          * it might have been realloc()'d so don't free buf here */
      64                 :          1 :         free(st.buf);
      65                 :          1 : }
      66                 :            : 
      67                 :            : /* Test that filling the stats buffer with more than the 
      68                 :            :  * initial allocation correctly reallocates and extends
      69                 :            :  * the buffer
      70                 :            :  */
      71                 :            : void
      72                 :          1 : test_stats_realloc_buffer(void **state)
      73                 :            : {
      74                 :            :         td_stats_t      st;
      75                 :            :         char            *buf;
      76                 :            :         int                     i;
      77                 :            : 
      78                 :          1 :         buf = malloc(TD_CTL_TEST_BUFSIZ);
      79                 :          1 :         assert_non_null(buf);
      80                 :            : 
      81                 :            :         tapdisk_stats_init(&st, buf, TD_CTL_TEST_BUFSIZ);
      82                 :            : 
      83         [ +  + ]:         11 :         for (i = 0; i < 10; i++) {
      84                 :         10 :                 tapdisk_stats_val(&st, "d", 1234567890);
      85                 :            :         }
      86                 :            : 
      87                 :          1 :         assert_string_equal((char*)st.buf, "1234567890, 1234567890, 1234567890, "
      88                 :            :                 "1234567890, 1234567890, 1234567890, 1234567890, 1234567890, "
      89                 :            :                 "1234567890, 1234567890");
      90                 :            : 
      91                 :            :         /* tapdisk_stats_init() put buf into st->buf and in the general case
      92                 :            :          * it might have been realloc()'d so don't free buf here */
      93                 :          1 :         free(st.buf);
      94                 :          1 : }
      95                 :            : 
      96                 :            : /* Test that filling the stats buffer to exactly the
      97                 :            :  * initial buffer length not including the terminating
      98                 :            :  * NULL is handled correctly. Note if we change TD_CTL_TEST_BUFSIZ
      99                 :            :  * then this test has to change.
     100                 :            :  */
     101                 :            : void
     102                 :          1 : test_stats_realloc_buffer_edgecase(void **state)
     103                 :            : {
     104                 :            :         td_stats_t      st;
     105                 :            :         char            *buf;
     106                 :            :         int                     i;
     107                 :            : 
     108                 :          1 :         buf = malloc(TD_CTL_TEST_BUFSIZ);
     109                 :          1 :         assert_non_null(buf);
     110                 :            : 
     111                 :            :         tapdisk_stats_init(&st, buf, TD_CTL_TEST_BUFSIZ);
     112                 :            : 
     113                 :            :         /* Put in 8 characters initially */
     114                 :          1 :         tapdisk_stats_val(&st, "d", 12345678);
     115                 :            :         /* Then 7 lots of 6 because the comma-space will pad it to 8 */
     116         [ +  + ]:          8 :         for (i = 0; i < 7; i++) {
     117                 :          7 :                 tapdisk_stats_val(&st, "d", 123456);
     118                 :            :         }
     119                 :          1 :         assert_string_equal((char*)st.buf, "12345678, 123456, 123456, "
     120                 :            :                 "123456, 123456, 123456, 123456, 123456");
     121                 :            : 
     122                 :            :         /* tapdisk_stats_init() put buf into st->buf and in the general case
     123                 :            :          * it might have been realloc()'d so don't free buf here */
     124                 :          1 :         free(st.buf);
     125                 :          1 : }

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