linux/tools/perf/tests/expr.c
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   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
   9static int test(struct expr_parse_ctx *ctx, const char *e, double val2)
  10{
  11        double val;
  12
  13        if (expr__parse(&val, ctx, e, 1))
  14                TEST_ASSERT_VAL("parse test failed", 0);
  15        TEST_ASSERT_VAL("unexpected value", val == val2);
  16        return 0;
  17}
  18
  19int test__expr(struct test *t __maybe_unused, int subtest __maybe_unused)
  20{
  21        struct expr_id_data *val_ptr;
  22        const char *p;
  23        double val;
  24        int ret;
  25        struct expr_parse_ctx ctx;
  26
  27        expr__ctx_init(&ctx);
  28        expr__add_id_val(&ctx, strdup("FOO"), 1);
  29        expr__add_id_val(&ctx, strdup("BAR"), 2);
  30
  31        ret = test(&ctx, "1+1", 2);
  32        ret |= test(&ctx, "FOO+BAR", 3);
  33        ret |= test(&ctx, "(BAR/2)%2", 1);
  34        ret |= test(&ctx, "1 - -4",  5);
  35        ret |= test(&ctx, "(FOO-1)*2 + (BAR/2)%2 - -4",  5);
  36        ret |= test(&ctx, "1-1 | 1", 1);
  37        ret |= test(&ctx, "1-1 & 1", 0);
  38        ret |= test(&ctx, "min(1,2) + 1", 2);
  39        ret |= test(&ctx, "max(1,2) + 1", 3);
  40        ret |= test(&ctx, "1+1 if 3*4 else 0", 2);
  41        ret |= test(&ctx, "1.1 + 2.1", 3.2);
  42        ret |= test(&ctx, ".1 + 2.", 2.1);
  43        ret |= test(&ctx, "d_ratio(1, 2)", 0.5);
  44        ret |= test(&ctx, "d_ratio(2.5, 0)", 0);
  45        ret |= test(&ctx, "1.1 < 2.2", 1);
  46        ret |= test(&ctx, "2.2 > 1.1", 1);
  47        ret |= test(&ctx, "1.1 < 1.1", 0);
  48        ret |= test(&ctx, "2.2 > 2.2", 0);
  49        ret |= test(&ctx, "2.2 < 1.1", 0);
  50        ret |= test(&ctx, "1.1 > 2.2", 0);
  51
  52        if (ret)
  53                return ret;
  54
  55        p = "FOO/0";
  56        ret = expr__parse(&val, &ctx, p, 1);
  57        TEST_ASSERT_VAL("division by zero", ret == -1);
  58
  59        p = "BAR/";
  60        ret = expr__parse(&val, &ctx, p, 1);
  61        TEST_ASSERT_VAL("missing operand", ret == -1);
  62
  63        expr__ctx_clear(&ctx);
  64        TEST_ASSERT_VAL("find other",
  65                        expr__find_other("FOO + BAR + BAZ + BOZO", "FOO",
  66                                         &ctx, 1) == 0);
  67        TEST_ASSERT_VAL("find other", hashmap__size(&ctx.ids) == 3);
  68        TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BAR",
  69                                                    (void **)&val_ptr));
  70        TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BAZ",
  71                                                    (void **)&val_ptr));
  72        TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "BOZO",
  73                                                    (void **)&val_ptr));
  74
  75        expr__ctx_clear(&ctx);
  76        TEST_ASSERT_VAL("find other",
  77                        expr__find_other("EVENT1\\,param\\=?@ + EVENT2\\,param\\=?@",
  78                                         NULL, &ctx, 3) == 0);
  79        TEST_ASSERT_VAL("find other", hashmap__size(&ctx.ids) == 2);
  80        TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "EVENT1,param=3/",
  81                                                    (void **)&val_ptr));
  82        TEST_ASSERT_VAL("find other", hashmap__find(&ctx.ids, "EVENT2,param=3/",
  83                                                    (void **)&val_ptr));
  84
  85        expr__ctx_clear(&ctx);
  86
  87        return 0;
  88}
  89