Add B32Decode()

README.md

@@ -8,6 +8,7 @@ Don't use the Go version yet. If you want sommething stable, there is a [Ruby ve
 
 # TODO
 
+ - [ ] Add a real testing lib to DRY things up.
  - [ ] Get a good CI system going? Run tests at PR time, prevent coverage slips, etc..
  - [ ] Finish all the things below:
 

pigeon/util.go

@@ -33,5 +33,11 @@ func B32Encode(data []byte) string {
 // B32Decode takes a Crockford Base32 string and converts it
 // to a byte array.
 func B32Decode(input string) []byte {
-	return []byte("WIP")
+	output, error := Encoder.DecodeString(input)
+	if error != nil {
+		msg := fmt.Sprintf("Error decoding Base32 string %s", input)
+		panic(msg)
+	}
+
+	return output
 }

pigeon/util_test.go

@@ -63,3 +63,19 @@ func TestB32Encode(t *testing.T) {
 		}
 	}
 }
+
+func TestB32Decode(t *testing.T) {
+	for i, test := range tests {
+		actual := B32Decode(test.encoded)
+		expected := test.decoded
+		if len(actual) != len(expected) {
+			fmt.Printf("\nFAIL:  length mismatch at tests[%d]", i)
+			t.Fail()
+		}
+		for j, x := range expected {
+			if actual[j] != x {
+				fmt.Printf("tests[%d].encoded[%d] did not decode B32 properly (%s)", j, i, test.encoded)
+			}
+		}
+	}
+}