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errors.test.ts
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errors.test.ts
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import { graphql, GraphQLError, buildSchema } from 'graphql';
import { Executor } from '@graphql-tools/delegate';
import { makeExecutableSchema } from '@graphql-tools/schema';
import { stitchSchemas } from '@graphql-tools/stitch';
import { ExecutionResult } from '@graphql-tools/utils';
describe('passes along errors for missing fields on list', () => {
test('if non-null', async () => {
const typeDefs = `
type Query {
getOuter: Outer
}
type Outer {
innerList: [Inner!]!
}
type Inner {
mandatoryField: String!
}
`;
const schema = makeExecutableSchema({
typeDefs,
resolvers: {
Query: {
getOuter: () => ({
innerList: [{ mandatoryField: 'test' }, {}],
}),
},
},
});
const stitchedSchema = stitchSchemas({
schemas: [schema],
});
const query = '{ getOuter { innerList { mandatoryField } } }';
const originalResult = await graphql(schema, query);
const stitchedResult = await graphql(stitchedSchema, query);
expect(stitchedResult).toEqual(originalResult);
expect(stitchedResult.errors[0].path).toEqual(originalResult.errors[0].path);
});
test('even if nullable', async () => {
const typeDefs = `
type Query {
getOuter: Outer
}
type Outer {
innerList: [Inner]!
}
type Inner {
mandatoryField: String!
}
`;
const schema = makeExecutableSchema({
typeDefs,
resolvers: {
Query: {
getOuter: () => ({
innerList: [{ mandatoryField: 'test' }, {}],
}),
},
},
});
const stitchedSchema = stitchSchemas({
schemas: [schema],
});
const query = '{ getOuter { innerList { mandatoryField } } }';
const originalResult = await graphql(schema, query);
const stitchedResult = await graphql(stitchedSchema, query);
expect(stitchedResult).toEqual(originalResult);
expect(stitchedResult.errors[0].path).toEqual(originalResult.errors[0].path);
});
});
describe('passes along errors when list field errors', () => {
test('if non-null', async () => {
const typeDefs = `
type Query {
getOuter: Outer
}
type Outer {
innerList: [Inner!]!
}
type Inner {
mandatoryField: String!
}
`;
const schema = makeExecutableSchema({
typeDefs,
resolvers: {
Query: {
getOuter: () => ({
innerList: [{ mandatoryField: 'test' }, new Error('test')],
}),
},
},
});
const stitchedSchema = stitchSchemas({
schemas: [schema],
});
const query = '{ getOuter { innerList { mandatoryField } } }';
const originalResult = await graphql(schema, query);
const stitchedResult = await graphql(stitchedSchema, query);
expect(stitchedResult).toEqual(originalResult);
expect(stitchedResult.errors[0].path).toEqual(originalResult.errors[0].path);
});
test('even if nullable', async () => {
const typeDefs = `
type Query {
getOuter: Outer
}
type Outer {
innerList: [Inner]!
}
type Inner {
mandatoryField: String!
}
`;
const schema = makeExecutableSchema({
typeDefs,
resolvers: {
Query: {
getOuter: () => ({
innerList: [{ mandatoryField: 'test' }, new Error('test')],
}),
},
},
});
const stitchedSchema = stitchSchemas({
schemas: [schema],
});
const query = '{ getOuter { innerList { mandatoryField } } }';
const originalResult = await graphql(schema, query);
const stitchedResult = await graphql(stitchedSchema, query);
expect(stitchedResult).toEqual(originalResult);
expect(stitchedResult.errors[0].path).toEqual(originalResult.errors[0].path);
});
describe('passes along correct error when there are two non-null fields', () => {
test('should work', async () => {
const schema = makeExecutableSchema({
typeDefs: `
type Query {
getBoth: Both
}
type Both {
mandatoryField1: String!
mandatoryField2: String!
}
`,
resolvers: {
Query: {
getBoth: () => ({ mandatoryField1: 'test' }),
},
},
});
const stitchedSchema = stitchSchemas({
subschemas: [schema],
});
const query = '{ getBoth { mandatoryField1 mandatoryField2 } }';
const originalResult = await graphql(schema, query);
const stitchedResult = await graphql(stitchedSchema, query);
expect(stitchedResult).toEqual(originalResult);
expect(stitchedResult.errors[0].path).toEqual(originalResult.errors[0].path);
});
});
});
describe('passes along errors for remote schemas', () => {
it('it works', async () => {
const typeDefs = `
type Test {
field: String!
}
type Query {
test: Test!
}
`;
const schema = buildSchema(typeDefs)
const executor: Executor = () => ({
data: {
test: null
},
errors: [
{
message: 'INVALID_CREDENTIALS',
path: ['test'],
} as unknown as GraphQLError
],
}) as ExecutionResult<any>;
const stitchedSchema = stitchSchemas({
schemas: [{
schema,
executor,
}]
});
const expectedResult: ExecutionResult<any> = {
data: null,
errors: [
new GraphQLError(
'INVALID_CREDENTIALS',
undefined,
undefined,
undefined,
['test'],
)
],
};
const query = `{
test {
field
}
}`
const result = await graphql(stitchedSchema, query);
expect(result).toEqual(expectedResult);
});
});