1 package matchers_test
2
3 import (
4 . "github.com/onsi/ginkgo/v2"
5 . "github.com/onsi/gomega"
6 . "github.com/onsi/gomega/matchers"
7 )
8
9 var _ = Describe("HaveLen", func() {
10 When("passed a supported type", func() {
11 It("should do the right thing", func() {
12 Expect("").Should(HaveLen(0))
13 Expect("AA").Should(HaveLen(2))
14
15 Expect([0]int{}).Should(HaveLen(0))
16 Expect([2]int{1, 2}).Should(HaveLen(2))
17
18 Expect([]int{}).Should(HaveLen(0))
19 Expect([]int{1, 2, 3}).Should(HaveLen(3))
20
21 Expect(map[string]int{}).Should(HaveLen(0))
22 Expect(map[string]int{"a": 1, "b": 2, "c": 3, "d": 4}).Should(HaveLen(4))
23
24 c := make(chan bool, 3)
25 Expect(c).Should(HaveLen(0))
26 c <- true
27 c <- true
28 Expect(c).Should(HaveLen(2))
29 })
30 })
31
32 When("passed a correctly typed nil", func() {
33 It("should operate succesfully on the passed in value", func() {
34 var nilSlice []int
35 Expect(nilSlice).Should(HaveLen(0))
36
37 var nilMap map[int]string
38 Expect(nilMap).Should(HaveLen(0))
39 })
40 })
41
42 When("passed an unsupported type", func() {
43 It("should error", func() {
44 success, err := (&HaveLenMatcher{Count: 0}).Match(0)
45 Expect(success).Should(BeFalse())
46 Expect(err).Should(HaveOccurred())
47
48 success, err = (&HaveLenMatcher{Count: 0}).Match(nil)
49 Expect(success).Should(BeFalse())
50 Expect(err).Should(HaveOccurred())
51 })
52 })
53 })
54
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