Initial MVP commit

internal/adapters/postgres/queries_test.go

@@ -0,0 +1,38 @@
+package postgres
+
+import (
+	"strings"
+	"testing"
+
+	"gitea.maximumdirect.net/ejr/weatherapi/internal/platform/constants"
+)
+
+func TestQueriesUseParametersNotHardcodedValues(t *testing.T) {
+	if !strings.Contains(queryObservationSummary, "make_interval(mins => $1)") {
+		t.Fatalf("observation summary query must use $1 minutes parameter")
+	}
+	if strings.Contains(queryObservationSummary, "30 minutes") {
+		t.Fatalf("observation summary query should not hardcode 30 minutes")
+	}
+
+	if !strings.Contains(queryObservationConditions, "make_interval(mins => $1)") {
+		t.Fatalf("observation conditions query must use $1 minutes parameter")
+	}
+	if !strings.Contains(queryObservationPrecipitation, "make_interval(mins => $1)") {
+		t.Fatalf("observation precipitation query must use $1 minutes parameter")
+	}
+
+	if !strings.Contains(queryForecastPeriodsAt, "LIMIT $2") {
+		t.Fatalf("forecast query must use parameterized limit")
+	}
+	if strings.Contains(queryForecastPeriodsAt, "LIMIT 5") {
+		t.Fatalf("forecast query should not hardcode limit=5")
+	}
+}
+
+func TestWindowMinutesUsesObservationWindowConstant(t *testing.T) {
+	got := windowMinutes(constants.ObservationWindow)
+	if got != 30 {
+		t.Fatalf("expected 30 minutes from constants.ObservationWindow, got %d", got)
+	}
+}