add test for midi.message.unpack

internal/processor/test/midi-message-unpack_test.go

@@ -1,10 +1,13 @@
 package processor_test
 
 import (
+	"reflect"
 	"testing"
 
+	"github.com/jwetzell/showbridge-go/internal/common"
 	"github.com/jwetzell/showbridge-go/internal/config"
 	"github.com/jwetzell/showbridge-go/internal/processor"
+	"gitlab.com/gomidi/midi/v2"
 )
 
 func TestMIDIMessageUnpackFromRegistry(t *testing.T) {
@@ -25,3 +28,125 @@ func TestMIDIMessageUnpackFromRegistry(t *testing.T) {
 		t.Fatalf("midi.message.unpack processor has wrong type: %s", processorInstance.Type())
 	}
 }
+
+func TestGoodMIDIMessageUnpack(t *testing.T) {
+	processorInstance := &processor.MIDIMessageUnpack{}
+	tests := []struct {
+		name     string
+		expected any
+		params   map[string]any
+		payload  any
+	}{
+		{
+			name:    "note on",
+			payload: midi.NoteOn(1, 60, 127),
+			expected: processor.MIDINoteOn{
+				Channel:  1,
+				Note:     60,
+				Velocity: 127,
+			},
+		},
+		{
+			name:    "note off",
+			payload: midi.NoteOffVelocity(1, 60, 127),
+			expected: processor.MIDINoteOff{
+				Channel:  1,
+				Note:     60,
+				Velocity: 127,
+			},
+		},
+		{
+			name:    "control change",
+			payload: midi.ControlChange(1, 64, 127),
+			expected: processor.MIDIControlChange{
+				Channel: 1,
+				Control: 64,
+				Value:   127,
+			},
+		},
+		{
+			name:    "program change",
+			payload: midi.ProgramChange(1, 10),
+			expected: processor.MIDIProgramChange{
+				Channel: 1,
+				Program: 10,
+			},
+		},
+		{
+			name:    "pitch bend",
+			payload: midi.Message{0xE1, 0x00, 0x40},
+			expected: processor.MIDIPitchBend{
+				Channel:  1,
+				Relative: 0,
+				Absolute: 8192,
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got, err := processorInstance.Process(t.Context(), common.GetWrappedPayload(t.Context(), test.payload))
+			if err != nil {
+				t.Fatalf("midi.message.unpack processing failed: %s", err)
+			}
+
+			if !reflect.DeepEqual(got.Payload, test.expected) {
+				t.Fatalf("midi.message.unpack got %+v (%T), expected %+v (%T)", got.Payload, got.Payload, test.expected, test.expected)
+			}
+		})
+	}
+}
+
+func TestBadMIDIMessageUnpack(t *testing.T) {
+	tests := []struct {
+		name        string
+		params      map[string]any
+		payload     any
+		errorString string
+	}{
+		{
+			name:        "payload not a MIDI message",
+			payload:     "not a MIDI message",
+			errorString: "midi.message.unpack processor only accepts a midi.Message",
+			params:      nil,
+		},
+		{
+			name:        "unsupported MIDI message type",
+			payload:     midi.Message{0x00, 0x00, 0x00},
+			errorString: "midi.message.unpack message type not supported UnknownType",
+			params:      nil,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+
+			registration, ok := processor.ProcessorRegistry["midi.message.unpack"]
+			if !ok {
+				t.Fatalf("midi.message.unpack processor not registered")
+			}
+
+			processorInstance, err := registration.New(config.ProcessorConfig{
+				Type:   "midi.message.unpack",
+				Params: test.params,
+			})
+
+			if err != nil {
+				if test.errorString != err.Error() {
+					t.Fatalf("midi.message.unpack got error '%s', expected '%s'", err.Error(), test.errorString)
+				}
+				return
+			}
+
+			got, err := processorInstance.Process(t.Context(), common.GetWrappedPayload(t.Context(), test.payload))
+
+			if err == nil {
+				t.Fatalf("midi.message.unpack expected to fail but succeeded, got: %v", got)
+			}
+
+			if err.Error() != test.errorString {
+				t.Fatalf("midi.message.unpack got error '%s', expected '%s'", err.Error(), test.errorString)
+			}
+		})
+	}
+}