1 package matchers_test
2
3 import (
4 "errors"
5
6 . "github.com/onsi/ginkgo/v2"
7 . "github.com/onsi/gomega"
8 . "github.com/onsi/gomega/matchers"
9 )
10
11 type CustomErr struct {
12 msg string
13 }
14
15 func (e *CustomErr) Error() string {
16 return e.msg
17 }
18
19 var _ = Describe("HaveOccurred", func() {
20 It("should succeed if matching an error", func() {
21 Expect(errors.New("Foo")).Should(HaveOccurred())
22 })
23
24 It("should not succeed with nil", func() {
25 Expect(nil).ShouldNot(HaveOccurred())
26 })
27
28 It("should only support errors and nil", func() {
29 success, err := (&HaveOccurredMatcher{}).Match("foo")
30 Expect(success).Should(BeFalse())
31 Expect(err).Should(HaveOccurred())
32
33 success, err = (&HaveOccurredMatcher{}).Match("")
34 Expect(success).Should(BeFalse())
35 Expect(err).Should(HaveOccurred())
36 })
37
38 It("doesn't support non-error type", func() {
39 success, err := (&HaveOccurredMatcher{}).Match(AnyType{})
40 Expect(success).Should(BeFalse())
41 Expect(err).Should(MatchError("Expected an error-type. Got:\n <matchers_test.AnyType>: {}"))
42 })
43
44 It("doesn't support non-error pointer type", func() {
45 success, err := (&HaveOccurredMatcher{}).Match(&AnyType{})
46 Expect(success).Should(BeFalse())
47 Expect(err).Should(MatchError(MatchRegexp(`Expected an error-type. Got:\n <*matchers_test.AnyType | 0x[[:xdigit:]]+>: {}`)))
48 })
49
50 It("should succeed with pointer types that conform to error interface", func() {
51 err := &CustomErr{"ohai"}
52 Expect(err).Should(HaveOccurred())
53 })
54
55 It("should not succeed with nil pointers to types that conform to error interface", func() {
56 var err *CustomErr = nil
57 Expect(err).ShouldNot(HaveOccurred())
58 })
59 })
60
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