diff --git a/cloud/bmaas/bmdb/migrations_test.go b/cloud/bmaas/bmdb/migrations_test.go
new file mode 100644
index 0000000..24d17a4
--- /dev/null
+++ b/cloud/bmaas/bmdb/migrations_test.go
@@ -0,0 +1,40 @@
+package bmdb
+
+import (
+	"testing"
+)
+
+// TestMigrateUpDown performs a full-up and full-down migration test on an
+// in-memory database twice.
+//
+// Doing this the first time allows us to check the up migrations are valid and
+// that the down migrations clean up enough after themselves for earlier down
+// migrations to success.
+//
+// Doing this the second time allows us to make sure the down migrations cleaned
+// up enough after themselves that they have left no table/type behind.
+func TestMigrateUpDown(t *testing.T) {
+	// Start with an empty database.
+	b := dut()
+	_, err := b.Open(false)
+	if err != nil {
+		t.Fatalf("Starting empty database failed: %v", err)
+	}
+
+	// Migrations go up.
+	if err := b.Database.MigrateUp(); err != nil {
+		t.Fatalf("Initial up migration failed: %v", err)
+	}
+	// Migrations go down.
+	if err := b.Database.MigrateDownDangerDanger(); err != nil {
+		t.Fatalf("Initial down migration failed: %v", err)
+	}
+	// Migrations go up.
+	if err := b.Database.MigrateUp(); err != nil {
+		t.Fatalf("Second up migration failed: %v", err)
+	}
+	// Migrations go down.
+	if err := b.Database.MigrateDownDangerDanger(); err != nil {
+		t.Fatalf("Second down migration failed: %v", err)
+	}
+}