Add e2e tests

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

@@ -0,0 +1,62 @@
+package matchers_test
+
+import (
+	"errors"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	. "github.com/onsi/gomega/matchers"
+)
+
+func Erroring() error {
+	return errors.New("bam")
+}
+
+func NotErroring() error {
+	return nil
+}
+
+type AnyType struct{}
+
+func Invalid() *AnyType {
+	return nil
+}
+
+var _ = Describe("Succeed", func() {
+	It("should succeed if the function succeeds", func() {
+		Ω(NotErroring()).Should(Succeed())
+	})
+
+	It("should succeed (in the negated) if the function errored", func() {
+		Ω(Erroring()).ShouldNot(Succeed())
+	})
+
+	It("should not if passed a non-error", func() {
+		success, err := (&SucceedMatcher{}).Match(Invalid())
+		Ω(success).Should(BeFalse())
+		Ω(err).Should(MatchError("Expected an error-type.  Got:\n    <*matchers_test.AnyType | 0x0>: nil"))
+	})
+
+	It("doesn't support non-error type", func() {
+		success, err := (&SucceedMatcher{}).Match(AnyType{})
+		Ω(success).Should(BeFalse())
+		Ω(err).Should(MatchError("Expected an error-type.  Got:\n    <matchers_test.AnyType>: {}"))
+	})
+
+	It("doesn't support non-error pointer type", func() {
+		success, err := (&SucceedMatcher{}).Match(&AnyType{})
+		Ω(success).Should(BeFalse())
+		Ω(err).Should(MatchError(MatchRegexp(`Expected an error-type.  Got:\n    <*matchers_test.AnyType | 0x[[:xdigit:]]+>: {}`)))
+	})
+
+	It("should not succeed with pointer types that conform to error interface", func() {
+		err := &CustomErr{"ohai"}
+		Ω(err).ShouldNot(Succeed())
+	})
+
+	It("should succeed with nil pointers to types that conform to error interface", func() {
+		var err *CustomErr = nil
+		Ω(err).Should(Succeed())
+	})
+
+})