Add e2e tests

vendor/github.com/onsi/ginkgo/internal/writer/writer_test.go

@@ -0,0 +1,75 @@
+package writer_test
+
+import (
+	"github.com/onsi/gomega/gbytes"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/ginkgo/internal/writer"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Writer", func() {
+	var writer *Writer
+	var out *gbytes.Buffer
+
+	BeforeEach(func() {
+		out = gbytes.NewBuffer()
+		writer = New(out)
+	})
+
+	It("should stream directly to the outbuffer by default", func() {
+		writer.Write([]byte("foo"))
+		Ω(out).Should(gbytes.Say("foo"))
+	})
+
+	It("should not emit the header when asked to DumpOutWitHeader", func() {
+		writer.Write([]byte("foo"))
+		writer.DumpOutWithHeader("my header")
+		Ω(out).ShouldNot(gbytes.Say("my header"))
+		Ω(out).Should(gbytes.Say("foo"))
+	})
+
+	Context("when told not to stream", func() {
+		BeforeEach(func() {
+			writer.SetStream(false)
+		})
+
+		It("should only write to the buffer when told to DumpOut", func() {
+			writer.Write([]byte("foo"))
+			Ω(out).ShouldNot(gbytes.Say("foo"))
+			writer.DumpOut()
+			Ω(out).Should(gbytes.Say("foo"))
+		})
+
+		It("should truncate the internal buffer when told to truncate", func() {
+			writer.Write([]byte("foo"))
+			writer.Truncate()
+			writer.DumpOut()
+			Ω(out).ShouldNot(gbytes.Say("foo"))
+
+			writer.Write([]byte("bar"))
+			writer.DumpOut()
+			Ω(out).Should(gbytes.Say("bar"))
+		})
+
+		Describe("emitting a header", func() {
+			Context("when the buffer has content", func() {
+				It("should emit the header followed by the content", func() {
+					writer.Write([]byte("foo"))
+					writer.DumpOutWithHeader("my header")
+
+					Ω(out).Should(gbytes.Say("my header"))
+					Ω(out).Should(gbytes.Say("foo"))
+				})
+			})
+
+			Context("when the buffer has no content", func() {
+				It("should not emit the header", func() {
+					writer.DumpOutWithHeader("my header")
+
+					Ω(out).ShouldNot(gbytes.Say("my header"))
+				})
+			})
+		})
+	})
+})