Implement metadata code tests.

app/streams/metadata_extractor_test.go

@@ -0,0 +1,32 @@
+package streams
+
+var (
+	exampleMetadataStr = `StreamTitle='Test 123';`
+	exampleMetadata    = map[string]string{
+		"StreamTitle": "Test 123",
+	}
+
+	exampleData = []byte{
+		0, 1, 2, 3, 4, 5, 6, 7,
+		0, 1, 2, 3, 4, 5, 6, 7,
+	}
+
+	exampleCompleteData = append(
+		append(
+			append(
+				append(
+					append(
+						exampleData[0:4], // content
+						2,                // 2*16 = 32 bytes in length
+					),
+					[]byte(exampleMetadataStr)..., // actual metadata
+				),
+				make([]byte, 9)..., // padding
+			),
+			exampleData[4:8]...,
+		),
+		0, // 0*16 = 0 bytes, no change in length
+	)
+)
+
+func Test_MetadataExtractor()

app/streams/metadata_test.go

@@ -0,0 +1,51 @@
+package streams
+
+import (
+	"fmt"
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+const (
+	originalStringA = "Aäöü´ß - \\_-_-_"
+	quotedStringA   = "'Aäöü´ß - \\\\_-_-_'"
+	originalStringB = "hfn9'07';137gr\tbqp9\"ui"
+	quotedStringB   = "'hfn9\\'07\\';137gr\tbqp9\"ui'"
+)
+
+func Test_Metadata(t *testing.T) {
+	Convey("Metadata", t, func() {
+		Convey("decoding", func() {
+			meta, err := DecodeMetadata("")
+			So(err, ShouldBeNil)
+			So(meta, ShouldHaveLength, 0)
+
+			meta, err = DecodeMetadata("StreamTitle=" + quotedStringA + ";")
+			So(err, ShouldBeNil)
+			So(meta, ShouldHaveLength, 1)
+			So(meta, ShouldContainKey, "StreamTitle")
+			So(meta["StreamTitle"], ShouldEqual, originalStringA)
+		})
+
+		Convey("encoding", func() {
+			meta := Metadata{}
+			So(meta.String(), ShouldHaveLength, 0)
+
+			meta = Metadata{
+				"StreamTitle": originalStringA,
+			}
+			So(meta.String(), ShouldEqual,
+				fmt.Sprintf("StreamTitle=%s;",
+					quotedStringA))
+
+			meta = Metadata{
+				"StreamTitle": originalStringA,
+				"test":        originalStringB,
+			}
+			So(meta.String(), ShouldEqual,
+				fmt.Sprintf("StreamTitle=%s;test=%s;",
+					quotedStringA, quotedStringB))
+		})
+	})
+}