Add e2e tests

vendor/github.com/onsi/gomega/matchers/equal_matcher_test.go

@@ -0,0 +1,78 @@
+package matchers_test
+
+import (
+	"errors"
+	"strings"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	. "github.com/onsi/gomega/matchers"
+)
+
+var _ = Describe("Equal", func() {
+	Context("when asserting that nil equals nil", func() {
+		It("should error", func() {
+			success, err := (&EqualMatcher{Expected: nil}).Match(nil)
+
+			Ω(success).Should(BeFalse())
+			Ω(err).Should(HaveOccurred())
+		})
+	})
+
+	Context("When asserting equality between objects", func() {
+		It("should do the right thing", func() {
+			Ω(5).Should(Equal(5))
+			Ω(5.0).Should(Equal(5.0))
+
+			Ω(5).ShouldNot(Equal("5"))
+			Ω(5).ShouldNot(Equal(5.0))
+			Ω(5).ShouldNot(Equal(3))
+
+			Ω("5").Should(Equal("5"))
+			Ω([]int{1, 2}).Should(Equal([]int{1, 2}))
+			Ω([]int{1, 2}).ShouldNot(Equal([]int{2, 1}))
+			Ω(map[string]string{"a": "b", "c": "d"}).Should(Equal(map[string]string{"a": "b", "c": "d"}))
+			Ω(map[string]string{"a": "b", "c": "d"}).ShouldNot(Equal(map[string]string{"a": "b", "c": "e"}))
+			Ω(errors.New("foo")).Should(Equal(errors.New("foo")))
+			Ω(errors.New("foo")).ShouldNot(Equal(errors.New("bar")))
+
+			Ω(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}).Should(Equal(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}))
+			Ω(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}).ShouldNot(Equal(myCustomType{s: "bar", n: 3, f: 2.0, arr: []string{"a", "b"}}))
+			Ω(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}).ShouldNot(Equal(myCustomType{s: "foo", n: 2, f: 2.0, arr: []string{"a", "b"}}))
+			Ω(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}).ShouldNot(Equal(myCustomType{s: "foo", n: 3, f: 3.0, arr: []string{"a", "b"}}))
+			Ω(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b"}}).ShouldNot(Equal(myCustomType{s: "foo", n: 3, f: 2.0, arr: []string{"a", "b", "c"}}))
+		})
+	})
+
+	Describe("failure messages", func() {
+		It("shows the two strings simply when they are short", func() {
+			subject := EqualMatcher{Expected: "eric"}
+
+			failureMessage := subject.FailureMessage("tim")
+			Ω(failureMessage).To(BeEquivalentTo(expectedShortStringFailureMessage))
+		})
+
+		It("shows the exact point where two long strings differ", func() {
+			stringWithB := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+			stringWithZ := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+
+			subject := EqualMatcher{Expected: stringWithZ}
+
+			failureMessage := subject.FailureMessage(stringWithB)
+			Ω(failureMessage).To(BeEquivalentTo(expectedLongStringFailureMessage))
+		})
+	})
+})
+
+var expectedShortStringFailureMessage = strings.TrimSpace(`
+Expected
+    <string>: tim
+to equal
+    <string>: eric
+`)
+var expectedLongStringFailureMessage = strings.TrimSpace(`
+Expected
+    <string>: "...aaaaabaaaaa..."
+to equal               |
+    <string>: "...aaaaazaaaaa..."
+`)