feat: aggregate daily payment history by hour

internal/analytics/service_test.go

@@ -1,6 +1,9 @@
 package analytics
 
-import "testing"
+import (
+	"strings"
+	"testing"
+)
 
 func TestPeerComparisonSupported(t *testing.T) {
 	t.Parallel()
@@ -11,3 +14,27 @@ func TestPeerComparisonSupported(t *testing.T) {
 		t.Fatal("peerComparisonSupported() = false for merchant scope")
 	}
 }
+
+func TestPaymentHistoryQueryUsesHoursForDay(t *testing.T) {
+	t.Parallel()
+
+	query, capacity := paymentHistoryQuery("DAY")
+	if !strings.Contains(query, "local_hour") || !strings.Contains(query, "EXTRACT(HOUR") {
+		t.Fatalf("paymentHistoryQuery(DAY) does not group by local hour:\n%s", query)
+	}
+	if capacity != 24 {
+		t.Fatalf("paymentHistoryQuery(DAY) capacity = %d, want 24", capacity)
+	}
+}
+
+func TestPaymentHistoryQueryKeepsDatesForLongerPeriods(t *testing.T) {
+	t.Parallel()
+
+	query, capacity := paymentHistoryQuery("WEEK")
+	if strings.Contains(query, "EXTRACT(HOUR") {
+		t.Fatalf("paymentHistoryQuery(WEEK) unexpectedly groups by hour:\n%s", query)
+	}
+	if capacity != 93 {
+		t.Fatalf("paymentHistoryQuery(WEEK) capacity = %d, want 93", capacity)
+	}
+}