forked from onsi/gomega
/
be_numerically_matcher_test.go
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/
be_numerically_matcher_test.go
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package matchers_test
import (
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/matchers"
)
var _ = Describe("BeNumerically", func() {
When("passed a number", func() {
It("should support ==", func() {
Expect(uint32(5)).Should(BeNumerically("==", 5))
Expect(float64(5.0)).Should(BeNumerically("==", 5))
Expect(int8(5)).Should(BeNumerically("==", 5))
})
It("should not have false positives", func() {
Expect(5.1).ShouldNot(BeNumerically("==", 5))
Expect(5).ShouldNot(BeNumerically("==", 5.1))
})
It("should support >", func() {
Expect(uint32(5)).Should(BeNumerically(">", 4))
Expect(float64(5.0)).Should(BeNumerically(">", 4.9))
Expect(int8(5)).Should(BeNumerically(">", 4))
Expect(uint32(5)).ShouldNot(BeNumerically(">", 5))
Expect(float64(5.0)).ShouldNot(BeNumerically(">", 5.0))
Expect(int8(5)).ShouldNot(BeNumerically(">", 5))
})
It("should support <", func() {
Expect(uint32(5)).Should(BeNumerically("<", 6))
Expect(float64(5.0)).Should(BeNumerically("<", 5.1))
Expect(int8(5)).Should(BeNumerically("<", 6))
Expect(uint32(5)).ShouldNot(BeNumerically("<", 5))
Expect(float64(5.0)).ShouldNot(BeNumerically("<", 5.0))
Expect(int8(5)).ShouldNot(BeNumerically("<", 5))
})
It("should support >=", func() {
Expect(uint32(5)).Should(BeNumerically(">=", 4))
Expect(float64(5.0)).Should(BeNumerically(">=", 4.9))
Expect(int8(5)).Should(BeNumerically(">=", 4))
Expect(uint32(5)).Should(BeNumerically(">=", 5))
Expect(float64(5.0)).Should(BeNumerically(">=", 5.0))
Expect(int8(5)).Should(BeNumerically(">=", 5))
Expect(uint32(5)).ShouldNot(BeNumerically(">=", 6))
Expect(float64(5.0)).ShouldNot(BeNumerically(">=", 5.1))
Expect(int8(5)).ShouldNot(BeNumerically(">=", 6))
})
It("should support <=", func() {
Expect(uint32(5)).Should(BeNumerically("<=", 6))
Expect(float64(5.0)).Should(BeNumerically("<=", 5.1))
Expect(int8(5)).Should(BeNumerically("<=", 6))
Expect(uint32(5)).Should(BeNumerically("<=", 5))
Expect(float64(5.0)).Should(BeNumerically("<=", 5.0))
Expect(int8(5)).Should(BeNumerically("<=", 5))
Expect(uint32(5)).ShouldNot(BeNumerically("<=", 4))
Expect(float64(5.0)).ShouldNot(BeNumerically("<=", 4.9))
Expect(int8(5)).Should(BeNumerically("<=", 5))
})
When("passed ~", func() {
When("passed a float", func() {
Context("and there is no precision parameter", func() {
It("should default to 1e-8", func() {
Expect(5.00000001).Should(BeNumerically("~", 5.00000002))
Expect(5.00000001).ShouldNot(BeNumerically("~", 5.0000001))
})
It("should show failure message", func() {
actual := BeNumerically("~", 4.98).FailureMessage(123)
expected := "Expected\n <int>: 123\nto be ~\n <float64>: 4.98"
Expect(actual).To(Equal(expected))
})
It("should show negated failure message", func() {
actual := BeNumerically("~", 4.98).NegatedFailureMessage(123)
expected := "Expected\n <int>: 123\nnot to be ~\n <float64>: 4.98"
Expect(actual).To(Equal(expected))
})
})
Context("and there is a precision parameter", func() {
It("should use the precision parameter", func() {
Expect(5.1).Should(BeNumerically("~", 5.19, 0.1))
Expect(5.1).Should(BeNumerically("~", 5.01, 0.1))
Expect(5.1).ShouldNot(BeNumerically("~", 5.22, 0.1))
Expect(5.1).ShouldNot(BeNumerically("~", 4.98, 0.1))
})
It("should show precision in failure message", func() {
actual := BeNumerically("~", 4.98, 0.1).FailureMessage(123)
expected := "Expected\n <int>: 123\nto be within 0.1 of ~\n <float64>: 4.98"
Expect(actual).To(Equal(expected))
})
It("should show precision in negated failure message", func() {
actual := BeNumerically("~", 4.98, 0.1).NegatedFailureMessage(123)
expected := "Expected\n <int>: 123\nnot to be within 0.1 of ~\n <float64>: 4.98"
Expect(actual).To(Equal(expected))
})
})
})
When("passed an int/uint", func() {
Context("and there is no precision parameter", func() {
It("should just do strict equality", func() {
Expect(5).Should(BeNumerically("~", 5))
Expect(5).ShouldNot(BeNumerically("~", 6))
Expect(uint(5)).ShouldNot(BeNumerically("~", 6))
})
})
Context("and there is a precision parameter", func() {
It("should use precision paramter", func() {
Expect(5).Should(BeNumerically("~", 6, 2))
Expect(5).ShouldNot(BeNumerically("~", 8, 2))
Expect(uint(5)).Should(BeNumerically("~", 6, 1))
})
})
})
})
})
When("passed a non-number", func() {
It("should error", func() {
success, err := (&BeNumericallyMatcher{Comparator: "==", CompareTo: []interface{}{5}}).Match("foo")
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
success, err = (&BeNumericallyMatcher{Comparator: "=="}).Match(5)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
success, err = (&BeNumericallyMatcher{Comparator: "~", CompareTo: []interface{}{3.0, "foo"}}).Match(5.0)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
Expect(err.Error()).Should(ContainSubstring("foo"))
success, err = (&BeNumericallyMatcher{Comparator: "==", CompareTo: []interface{}{"bar"}}).Match(5)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
success, err = (&BeNumericallyMatcher{Comparator: "==", CompareTo: []interface{}{"bar"}}).Match("foo")
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
success, err = (&BeNumericallyMatcher{Comparator: "==", CompareTo: []interface{}{nil}}).Match(0)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
success, err = (&BeNumericallyMatcher{Comparator: "==", CompareTo: []interface{}{0}}).Match(nil)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
})
When("passed an unsupported comparator", func() {
It("should error", func() {
success, err := (&BeNumericallyMatcher{Comparator: "!=", CompareTo: []interface{}{5}}).Match(4)
Expect(success).Should(BeFalse())
Expect(err).Should(HaveOccurred())
})
})
})