tools/perf/tests/expr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "util/debug.h"
   3 #include "util/expr.h"
   4 #include "tests.h"
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <linux/zalloc.h>
   8
   9 static int test(struct parse_ctx *ctx, const char *e, double val2)
  10 {
  11         double val;
  12
  13         if (expr__parse(&val, ctx, &e))
  14                 TEST_ASSERT_VAL("parse test failed", 0);
  15         TEST_ASSERT_VAL("unexpected value", val == val2);
  16         return 0;
  17 }
  18
  19 int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
  20 {
  21         const char *p;
  22         const char **other;
  23         double val;
  24         int i, ret;
  25         struct parse_ctx ctx;
  26         int num_other;
  27
  28         expr__ctx_init(&ctx);
  29         expr__add_id(&ctx, "FOO", 1);
  30         expr__add_id(&ctx, "BAR", 2);
  31
  32         ret = test(&ctx, "1+1", 2);
  33         ret |= test(&ctx, "FOO+BAR", 3);
  34         ret |= test(&ctx, "(BAR/2)%2", 1);
  35         ret |= test(&ctx, "1 - -4",  5);
  36         ret |= test(&ctx, "(FOO-1)*2 + (BAR/2)%2 - -4",  5);
  37         ret |= test(&ctx, "1-1 | 1", 1);
  38         ret |= test(&ctx, "1-1 & 1", 0);
  39         ret |= test(&ctx, "min(1,2) + 1", 2);
  40         ret |= test(&ctx, "max(1,2) + 1", 3);
  41         ret |= test(&ctx, "1+1 if 3*4 else 0", 2);
  42
  43         if (ret)
  44                 return ret;
  45
  46         p = "FOO/0";
  47         ret = expr__parse(&val, &ctx, &p);
  48         TEST_ASSERT_VAL("division by zero", ret == 1);
  49
  50         p = "BAR/";
  51         ret = expr__parse(&val, &ctx, &p);
  52         TEST_ASSERT_VAL("missing operand", ret == 1);
  53
  54         TEST_ASSERT_VAL("find other",
  55                         expr__find_other("FOO + BAR + BAZ + BOZO", "FOO", &other, &num_other) == 0);
  56         TEST_ASSERT_VAL("find other", num_other == 3);
  57         TEST_ASSERT_VAL("find other", !strcmp(other[0], "BAR"));
  58         TEST_ASSERT_VAL("find other", !strcmp(other[1], "BAZ"));
  59         TEST_ASSERT_VAL("find other", !strcmp(other[2], "BOZO"));
  60         TEST_ASSERT_VAL("find other", other[3] == NULL);
  61
  62         for (i = 0; i < num_other; i++)
  63                 zfree(&other[i]);
  64         free((void *)other);
  65
  66         return 0;
  67 }