github.com/onsi/gomega@v1.32.0/matchers/have_occurred_matcher_test.go (about)

     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  })