aneurinandClaude Sonnet 5
82611a5e96
Broadens the built-in set with the string/presence checks that came up most often when reaching for this package: - Required[T comparable] non-zero value - Prefix / Suffix / Contains strings.HasPrefix/HasSuffix/Contains - Match(*regexp.Regexp) arbitrary pattern All follow the existing shape: a constructor returning func(T) error, a sentinel error matched with errors.Is, table-driven tests and an Example. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
36 lines
628 B
Go
36 lines
628 B
Go
package validate
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import (
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"errors"
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"fmt"
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"regexp"
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"testing"
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)
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func ExampleMatch() {
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slug := Match(regexp.MustCompile(`^[a-z0-9-]+$`))
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fmt.Println(slug("Not A Slug"))
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// Output: invalid format
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}
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func TestMatch(t *testing.T) {
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v := Match(regexp.MustCompile(`^[a-z0-9-]+$`))
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testCases := map[string]error{
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"hello-world-123": nil,
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"abc": nil,
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"Hello": ErrNoMatch,
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"has space": ErrNoMatch,
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"": ErrNoMatch,
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}
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for input, want := range testCases {
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t.Run(input, func(t *testing.T) {
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if got := v(input); !errors.Is(got, want) {
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t.Error("got", got, "want", want)
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}
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})
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}
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}
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