go baby go

fitness-tui/internal/tui/components/chart_test.go

@@ -0,0 +1,38 @@
+package components
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestChartView(t *testing.T) {
+	t.Run("empty data", func(t *testing.T) {
+		chart := NewChart(nil, 10, 4, "Test")
+		view := chart.View()
+		assert.Contains(t, view, "No data available")
+	})
+
+	t.Run("single data point", func(t *testing.T) {
+		chart := NewChart([]float64{50}, 5, 4, "Single")
+		view := chart.View()
+		assert.Equal(t, "Single\n▄▄▄▄▄", view)
+	})
+
+	t.Run("multiple data points", func(t *testing.T) {
+		data := []float64{10, 20, 30, 40, 50}
+		chart := NewChart(data, 5, 4, "Series")
+		view := chart.View()
+		assert.Equal(t, "Series\n▁▂▄▆█", view)
+	})
+
+	t.Run("downsampling", func(t *testing.T) {
+		data := make([]float64, 100)
+		for i := range data {
+			data[i] = float64(i)
+		}
+		chart := NewChart(data, 20, 4, "Downsample")
+		view := chart.View()
+		assert.Len(t, view, 20+6) // Title + chart characters
+	})
+}