Initial commit

internal/scheduler/badge_test.go

@@ -0,0 +1,95 @@
+package scheduler
+
+import (
+	"testing"
+	"time"
+
+	"veola/internal/models"
+)
+
+func bestItem(best, target float64) models.Item {
+	bp := best
+	it := models.Item{BestPrice: &bp}
+	if target > 0 {
+		t := target
+		it.TargetPrice = &t
+	}
+	return it
+}
+
+func TestPickBadgeAllTimeLow(t *testing.T) {
+	now := time.Now()
+	hist := []models.PricePoint{
+		{Price: 100, PolledAt: now.Add(-40 * 24 * time.Hour)},
+		{Price: 80, PolledAt: now.Add(-10 * 24 * time.Hour)},
+		{Price: 60, PolledAt: now.Add(-1 * 24 * time.Hour)},
+	}
+	it := bestItem(50, 0)
+	got := PickBadge(it, hist, now)
+	if got.Label != "All-time low" {
+		t.Errorf("expected all-time low, got %q", got.Label)
+	}
+}
+
+func TestPickBadgeBelowAverage(t *testing.T) {
+	now := time.Now()
+	hist := []models.PricePoint{
+		{Price: 100, PolledAt: now.Add(-25 * 24 * time.Hour)},
+		{Price: 100, PolledAt: now.Add(-10 * 24 * time.Hour)},
+		{Price: 100, PolledAt: now.Add(-5 * 24 * time.Hour)},
+	}
+	it := bestItem(80, 0) // 20% below 100 avg, not lowest because there's no lower in history but best is below points
+	// add an older lower point so all-time-low is NOT triggered
+	hist = append(hist, models.PricePoint{Price: 70, PolledAt: now.Add(-90 * 24 * time.Hour)})
+	got := PickBadge(it, hist, now)
+	if got.Label != "20% below 30-day avg" {
+		t.Errorf("expected 20%% below 30-day avg, got %q", got.Label)
+	}
+}
+
+func TestPickBadgeBelowTarget(t *testing.T) {
+	now := time.Now()
+	// 30-day window mean equals best (50) so avg badge does not fire.
+	// An older lower point disables the all-time-low badge.
+	hist := []models.PricePoint{
+		{Price: 50, PolledAt: now.Add(-2 * 24 * time.Hour)},
+		{Price: 50, PolledAt: now.Add(-1 * 24 * time.Hour)},
+		{Price: 40, PolledAt: now.Add(-90 * 24 * time.Hour)},
+	}
+	it := bestItem(50, 100) // 50% below target
+	got := PickBadge(it, hist, now)
+	if got.Label != "50% below target" {
+		t.Errorf("expected 50%% below target, got %q", got.Label)
+	}
+}
+
+func TestPickBadgeNone(t *testing.T) {
+	now := time.Now()
+	// best matches recent avg, no target, and an older lower point exists -
+	// no badge should fire.
+	hist := []models.PricePoint{
+		{Price: 50, PolledAt: now.Add(-1 * 24 * time.Hour)},
+		{Price: 40, PolledAt: now.Add(-90 * 24 * time.Hour)},
+	}
+	it := bestItem(50, 0)
+	got := PickBadge(it, hist, now)
+	if got.Label != "" {
+		t.Errorf("expected no badge, got %q", got.Label)
+	}
+}
+
+func TestPickBadgeIgnoresShortAvgGap(t *testing.T) {
+	now := time.Now()
+	hist := []models.PricePoint{
+		{Price: 100, PolledAt: now.Add(-1 * 24 * time.Hour)},
+		{Price: 95, PolledAt: now.Add(-2 * 24 * time.Hour)},
+	}
+	// best 92 is only ~5.6% below avg 97.5 — under the 10% floor
+	older := models.PricePoint{Price: 80, PolledAt: now.Add(-90 * 24 * time.Hour)}
+	hist = append(hist, older)
+	it := bestItem(92, 0)
+	got := PickBadge(it, hist, now)
+	if got.Label != "" {
+		t.Errorf("expected no badge for <10%% gap, got %q", got.Label)
+	}
+}