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

     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("BeKeyOf", func() {
    10  	When("passed a map", func() {
    11  		It("should do the right thing", func() {
    12  			Expect(2).Should(BeKeyOf(map[int]bool{1: true, 2: false}))
    13  			Expect(3).ShouldNot(BeKeyOf(map[int]bool{1: true, 2: false}))
    14  
    15  			var mone map[int]bool
    16  			Expect(42).ShouldNot(BeKeyOf(mone))
    17  
    18  			two := 2
    19  			Expect(&two).Should(BeKeyOf(map[*int]bool{&two: true, nil: false}))
    20  		})
    21  	})
    22  
    23  	When("passed a correctly typed nil", func() {
    24  		It("should operate successfully on the passed in value", func() {
    25  			two := 2
    26  			Expect((*int)(nil)).Should(BeKeyOf(map[*int]bool{&two: true, nil: false}))
    27  
    28  			one := 1
    29  			Expect((*int)(nil)).ShouldNot(BeKeyOf(map[*int]bool{&two: true, &one: false}))
    30  		})
    31  	})
    32  
    33  	When("passed an unsupported type", func() {
    34  		It("should error", func() {
    35  			success, err := (&BeKeyOfMatcher{Map: []interface{}{0}}).Match(nil)
    36  			Expect(success).Should(BeFalse())
    37  			Expect(err).Should(HaveOccurred())
    38  
    39  			success, err = (&BeKeyOfMatcher{Map: nil}).Match(nil)
    40  			Expect(success).Should(BeFalse())
    41  			Expect(err).Should(HaveOccurred())
    42  		})
    43  	})
    44  
    45  	It("builds failure message", func() {
    46  		actual := BeKeyOf(map[int]bool{1: true, 2: false}).FailureMessage(42)
    47  		Expect(actual).To(MatchRegexp("Expected\n    <int>: 42\nto be a key of\n    <\\[\\]bool | len:2, cap:2>: \\[(true, false)|(false, true)\\]"))
    48  	})
    49  
    50  	It("builds negated failure message", func() {
    51  		actual := BeKeyOf(map[int]bool{1: true, 2: false}).NegatedFailureMessage(42)
    52  		Expect(actual).To(MatchRegexp("Expected\n    <int>: 42\nnot to be a key of\n    <\\[\\]bool | len:2, cap:2>: \\[(true, false)|(false, true)\\]"))
    53  	})
    54  
    55  })