fix(xugu): require database before connecting

apps/desktop/src/lib/__tests__/connection/connectionDialogXuguDatabase.spec.ts

@@ -0,0 +1,20 @@
+import { readFileSync } from "node:fs";
+import { describe, expect, it } from "vitest";
+
+const dialogSource = readFileSync(new URL("../../../components/connection/ConnectionDialog.vue", import.meta.url), "utf8");
+
+describe("ConnectionDialog Xugu database requirement", () => {
+  it("shows the existing required-database hint only for Xugu", () => {
+    const placeholder = dialogSource.slice(dialogSource.indexOf("const databasePlaceholder = computed"), dialogSource.indexOf("const transportLayers"));
+    expect(placeholder).toContain('if (form.value.db_type === "xugu") return t("connection.databasePlaceholderRequired")');
+    expect(placeholder).toContain('if (form.value.db_type === "kingbase") return t("connection.databasePlaceholderRequired")');
+  });
+
+  it("validates Xugu's effective database before connection testing or saving", () => {
+    const submit = dialogSource.slice(dialogSource.indexOf("function connectionConfigForSubmit"), dialogSource.indexOf("function ", dialogSource.indexOf("function connectionConfigForSubmit") + 10));
+    expect(submit).toContain('if (config.db_type === "xugu")');
+    expect(submit).toContain("hasXuguConnectionDatabase(config.database, config.connection_string)");
+    expect(submit).toContain('throw new Error(t("connection.xuguDatabaseRequired"))');
+    expect(submit).toContain('if (config.db_type === "kingbase")');
+  });
+});

apps/desktop/src/lib/__tests__/connection/xuguDatabase.spec.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from "vitest";
+import { hasXuguConnectionDatabase, xuguDatabaseFromConnectionString } from "@/lib/connection/xuguDatabase";
+
+describe("Xugu connection database validation", () => {
+  it("accepts a database selected in the structured field", () => {
+    expect(hasXuguConnectionDatabase("  XUGU_TEST_DB  ", undefined)).toBe(true);
+  });
+
+  it("rejects a missing or whitespace-only database", () => {
+    expect(hasXuguConnectionDatabase(undefined, undefined)).toBe(false);
+    expect(hasXuguConnectionDatabase("  \t ", undefined)).toBe(false);
+  });
+
+  it.each(["xugu://user:password@host:5138/XUGU_TEST_DB", "jdbc:xugu://host:5138/XUGU_TEST_DB"])("accepts a database encoded in a Xugu URL: %s", (url) => {
+    expect(xuguDatabaseFromConnectionString(url)).toBe("XUGU_TEST_DB");
+    expect(hasXuguConnectionDatabase(undefined, url)).toBe(true);
+  });
+
+  it("accepts a database in a native Xugu DSN, including quoted separators", () => {
+    expect(xuguDatabaseFromConnectionString("IP=db.example;DB='shop;east';User=app")).toBe("shop;east");
+    expect(xuguDatabaseFromConnectionString("IP=db.example;DB='sales''east';User=app")).toBe("sales'east");
+  });
+
+  it("rejects a missing or empty database in a native Xugu DSN", () => {
+    expect(xuguDatabaseFromConnectionString("IP=db.example;User=app")).toBeUndefined();
+    expect(xuguDatabaseFromConnectionString("IP=db.example;DB=;User=app")).toBeUndefined();
+    expect(xuguDatabaseFromConnectionString("IP=db.example;DB='  ';User=app")).toBeUndefined();
+  });
+
+  it("does not treat another database's URL as a Xugu database", () => {
+    expect(xuguDatabaseFromConnectionString("postgres://user:password@host:5432/app")).toBeUndefined();
+    expect(hasXuguConnectionDatabase(undefined, "postgres://user:password@host:5432/app")).toBe(false);
+  });
+});