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