test added

main_test.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+func TestCalculateBeats(t *testing.T) {
+	tests := []struct {
+		name          string
+		elapsed       time.Duration
+		bpm           float64
+		beatsPerBar   int
+		expectedBeat  int
+		expectedBar   int
+		expectedTotal int
+	}{
+		{
+			name:          "Test 1",
+			elapsed:       time.Duration(0),
+			bpm:           120.0,
+			beatsPerBar:   4,
+			expectedBeat:  0,
+			expectedBar:   0,
+			expectedTotal: 0,
+		},
+		{
+			name:          "Test 2",
+			elapsed:       time.Duration(time.Minute),
+			bpm:           60.0,
+			beatsPerBar:   4,
+			expectedBeat:  0,
+			expectedBar:   15,
+			expectedTotal: 60,
+		},
+		{
+			name:          "Test 3",
+			elapsed:       time.Duration(time.Second * 30),
+			bpm:           120.0,
+			beatsPerBar:   4,
+			expectedBeat:  0,
+			expectedBar:   15,
+			expectedTotal: 60,
+		},
+		{
+			name:          "Test 4",
+			elapsed:       time.Duration(time.Second * 15),
+			bpm:           120.0,
+			beatsPerBar:   4,
+			expectedBeat:  2,
+			expectedBar:   7,
+			expectedTotal: 30,
+		},
+		{
+			name:          "Test 5",
+			elapsed:       time.Duration(time.Second * 75),
+			bpm:           120.0,
+			beatsPerBar:   4,
+			expectedBeat:  2,
+			expectedBar:   37,
+			expectedTotal: 150,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			beatNo, barNo, totalNo := calculateBeats(tt.elapsed, tt.bpm, tt.beatsPerBar)
+			if beatNo != tt.expectedBeat || barNo != tt.expectedBar || totalNo != tt.expectedTotal {
+				t.Errorf("calculateBeats(%v, %v, %v) = %v, %v, %v; want %v, %v, %v",
+					tt.elapsed, tt.bpm, tt.beatsPerBar, beatNo, barNo, totalNo,
+					tt.expectedBeat, tt.expectedBar, tt.expectedTotal)
+			}
+		})
+	}
+}