Initial phase 1 baseline implementation

internal/adapters/postgres/migrate_integration_test.go

@@ -0,0 +1,41 @@
+package postgres
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+)
+
+func TestMigrationsAndStore(t *testing.T) {
+	databaseURL := os.Getenv("DRIVE_TEST_DATABASE_URL")
+	if databaseURL == "" {
+		t.Skip("DRIVE_TEST_DATABASE_URL is not set")
+	}
+
+	if err := Migrate(databaseURL); err != nil {
+		t.Fatalf("first migration run failed: %v", err)
+	}
+	if err := Migrate(databaseURL); err != nil {
+		t.Fatalf("second migration run failed: %v", err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	store, err := Open(ctx, databaseURL)
+	if err != nil {
+		t.Fatalf("Open returned an error: %v", err)
+	}
+	defer store.Close()
+
+	if err := store.DatabaseHealth(ctx); err != nil {
+		t.Fatalf("DatabaseHealth returned an error: %v", err)
+	}
+	initialized, err := store.OwnerExists(ctx)
+	if err != nil {
+		t.Fatalf("OwnerExists returned an error: %v", err)
+	}
+	if initialized {
+		t.Fatal("OwnerExists = true on a fresh database, want false")
+	}
+}