github.com/onsi/gomega@v1.32.0/matchers/be_empty_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("BeEmpty", func() {
    10  	When("passed a supported type", func() {
    11  		It("should do the right thing", func() {
    12  			Expect("").Should(BeEmpty())
    13  			Expect(" ").ShouldNot(BeEmpty())
    14  
    15  			Expect([0]int{}).Should(BeEmpty())
    16  			Expect([1]int{1}).ShouldNot(BeEmpty())
    17  
    18  			Expect([]int{}).Should(BeEmpty())
    19  			Expect([]int{1}).ShouldNot(BeEmpty())
    20  
    21  			Expect(map[string]int{}).Should(BeEmpty())
    22  			Expect(map[string]int{"a": 1}).ShouldNot(BeEmpty())
    23  
    24  			c := make(chan bool, 1)
    25  			Expect(c).Should(BeEmpty())
    26  			c <- true
    27  			Expect(c).ShouldNot(BeEmpty())
    28  		})
    29  	})
    30  
    31  	When("passed a correctly typed nil", func() {
    32  		It("should be true", func() {
    33  			var nilSlice []int
    34  			Expect(nilSlice).Should(BeEmpty())
    35  
    36  			var nilMap map[int]string
    37  			Expect(nilMap).Should(BeEmpty())
    38  		})
    39  	})
    40  
    41  	When("passed an unsupported type", func() {
    42  		It("should error", func() {
    43  			success, err := (&BeEmptyMatcher{}).Match(0)
    44  			Expect(success).Should(BeFalse())
    45  			Expect(err).Should(HaveOccurred())
    46  
    47  			success, err = (&BeEmptyMatcher{}).Match(nil)
    48  			Expect(success).Should(BeFalse())
    49  			Expect(err).Should(HaveOccurred())
    50  		})
    51  	})
    52  })