86 lines
3.0 KiB
TypeScript
86 lines
3.0 KiB
TypeScript
import { buildSchema, introspectionFromSchema } from "graphql";
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import { describe, expect, test } from "vite-plus/test";
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import { tryBuildIntrospectionFromFile } from "./graphqlSchema";
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const sdl = `
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type Query {
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hello: String!
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user(id: ID!): User
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}
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type User {
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id: ID!
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name: String
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}
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`;
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const introspection = introspectionFromSchema(buildSchema(sdl));
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describe("tryBuildIntrospectionFromFile", () => {
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test("accepts introspection JSON wrapped in { data: ... }", () => {
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const input = JSON.stringify({ data: introspection });
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const result = tryBuildIntrospectionFromFile(input);
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expect("schema" in result).toBe(true);
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if ("schema" in result) {
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expect(result.schema.getQueryType()?.getFields()).toHaveProperty("hello");
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// Output content is the normalized, persistable shape.
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expect(JSON.parse(result.content)).toHaveProperty("data.__schema");
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}
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});
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test("accepts bare introspection JSON without a data wrapper", () => {
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const input = JSON.stringify(introspection);
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const result = tryBuildIntrospectionFromFile(input);
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expect("schema" in result).toBe(true);
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if ("schema" in result) {
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expect(result.schema.getQueryType()?.getFields()).toHaveProperty("user");
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// Bare input is wrapped on the way out.
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expect(JSON.parse(result.content)).toHaveProperty("data.__schema");
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}
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});
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test("accepts a GraphQL SDL string", () => {
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const result = tryBuildIntrospectionFromFile(sdl);
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expect("schema" in result).toBe(true);
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if ("schema" in result) {
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const fields = result.schema.getQueryType()?.getFields() ?? {};
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expect(fields).toHaveProperty("hello");
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expect(fields).toHaveProperty("user");
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// SDL is converted to introspection JSON for storage.
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expect(JSON.parse(result.content)).toHaveProperty("data.__schema");
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}
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});
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test("returns an error for JSON that is neither introspection nor SDL", () => {
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const result = tryBuildIntrospectionFromFile('{"unrelated":"value"}');
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expect("error" in result).toBe(true);
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if ("error" in result) {
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expect(result.error).toMatch(/Could not parse file as introspection JSON or GraphQL SDL/);
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}
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});
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test("returns an error for content that is neither valid JSON nor valid SDL", () => {
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const result = tryBuildIntrospectionFromFile("not a schema!@#$");
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expect("error" in result).toBe(true);
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if ("error" in result) {
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expect(result.error).toMatch(/Could not parse file as introspection JSON or GraphQL SDL/);
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}
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});
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test("returns an error when introspection JSON has a malformed __schema", () => {
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// Has the data.__schema shape but the contents are invalid for buildClientSchema.
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const input = JSON.stringify({ data: { __schema: { broken: true } } });
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const result = tryBuildIntrospectionFromFile(input);
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expect("error" in result).toBe(true);
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if ("error" in result) {
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expect(result.error).toMatch(/Failed to build schema from introspection JSON/);
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}
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});
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});
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