Add e2e tests

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

@@ -0,0 +1,57 @@
+package matchers_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	. "github.com/onsi/gomega/matchers"
+)
+
+var _ = Describe("NotMatcher", func() {
+	Context("basic examples", func() {
+		It("works", func() {
+			Expect(input).To(Not(false1))
+			Expect(input).To(Not(Not(true2)))
+			Expect(input).ToNot(Not(true3))
+			Expect(input).ToNot(Not(Not(false1)))
+			Expect(input).To(Not(Not(Not(false2))))
+		})
+	})
+
+	Context("De Morgan's laws", func() {
+		It("~(A && B) == ~A || ~B", func() {
+			Expect(input).To(Not(And(false1, false2)))
+			Expect(input).To(Or(Not(false1), Not(false2)))
+		})
+		It("~(A || B) == ~A && ~B", func() {
+			Expect(input).To(Not(Or(false1, false2)))
+			Expect(input).To(And(Not(false1), Not(false2)))
+		})
+	})
+
+	Context("failure messages are opposite of original matchers' failure messages", func() {
+		Context("when match fails", func() {
+			It("gives a descriptive message", func() {
+				verifyFailureMessage(Not(HaveLen(2)), input, "not to have length 2")
+			})
+		})
+
+		Context("when match succeeds, but expected it to fail", func() {
+			It("gives a descriptive message", func() {
+				verifyFailureMessage(Not(Not(HaveLen(3))), input, "to have length 3")
+			})
+		})
+	})
+
+	Context("MatchMayChangeInTheFuture()", func() {
+		It("Propagates value from wrapped matcher", func() {
+			m := Not(Or()) // an empty Or() always returns false, and indicates it cannot change
+			Expect(m.Match("anything")).To(BeTrue())
+			Expect(m.(*NotMatcher).MatchMayChangeInTheFuture("anything")).To(BeFalse())
+		})
+		It("Defaults to true", func() {
+			m := Not(Equal(1)) // Equal does not have this method
+			Expect(m.Match(2)).To(BeTrue())
+			Expect(m.(*NotMatcher).MatchMayChangeInTheFuture(2)).To(BeTrue()) // defaults to true
+		})
+	})
+})