1 package assert_test
2
3 import (
4 "fmt"
5 "regexp"
6 "testing"
7
8 "gotest.tools/v3/assert"
9 "gotest.tools/v3/assert/cmp"
10 )
11
12 var t = &testing.T{}
13
14 func ExampleAssert_customComparison() {
15 regexPattern := func(value string, pattern string) cmp.Comparison {
16 return func() cmp.Result {
17 re := regexp.MustCompile(pattern)
18 if re.MatchString(value) {
19 return cmp.ResultSuccess
20 }
21 return cmp.ResultFailure(
22 fmt.Sprintf("%q did not match pattern %q", value, pattern))
23 }
24 }
25 assert.Assert(t, regexPattern("12345.34", `\d+.\d\d`))
26 }
27
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