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GraphQLError-test.js
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GraphQLError-test.js
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import { expect } from 'chai';
import { describe, it } from 'mocha';
import dedent from '../../__testUtils__/dedent';
import invariant from '../../jsutils/invariant';
import { Kind } from '../../language/kinds';
import { parse } from '../../language/parser';
import { Source } from '../../language/source';
import { GraphQLError, printError } from '../GraphQLError';
const source = new Source(dedent`
{
field
}
`);
const ast = parse(source);
const operationNode = ast.definitions[0];
invariant(operationNode.kind === Kind.OPERATION_DEFINITION);
const fieldNode = operationNode.selectionSet.selections[0];
invariant(fieldNode);
describe('GraphQLError', () => {
it('is a class and is a subclass of Error', () => {
expect(new GraphQLError('str')).to.be.instanceof(Error);
expect(new GraphQLError('str')).to.be.instanceof(GraphQLError);
});
it('has a name, message, extensions, and stack trace', () => {
const e = new GraphQLError('msg');
expect(e).to.deep.include({
name: 'GraphQLError',
message: 'msg',
extensions: {},
});
expect(e.stack).to.be.a('string');
});
it('uses the stack of an original error', () => {
const original = new Error('original');
const e = new GraphQLError(
'msg',
undefined,
undefined,
undefined,
undefined,
original,
);
expect(e).to.include({
name: 'GraphQLError',
message: 'msg',
stack: original.stack,
originalError: original,
});
});
it('creates new stack if original error has no stack', () => {
const original = new Error('original');
const e = new GraphQLError('msg', null, null, null, null, original);
expect(e).to.include({
name: 'GraphQLError',
message: 'msg',
originalError: original,
});
expect(e.stack).to.be.a('string');
});
it('converts nodes to positions and locations', () => {
const e = new GraphQLError('msg', [fieldNode]);
expect(e).to.have.property('source', source);
expect(e).to.deep.include({
nodes: [fieldNode],
positions: [4],
locations: [{ line: 2, column: 3 }],
});
});
it('converts single node to positions and locations', () => {
const e = new GraphQLError('msg', fieldNode); // Non-array value.
expect(e).to.have.property('source', source);
expect(e).to.deep.include({
nodes: [fieldNode],
positions: [4],
locations: [{ line: 2, column: 3 }],
});
});
it('converts node with loc.start === 0 to positions and locations', () => {
const e = new GraphQLError('msg', operationNode);
expect(e).to.have.property('source', source);
expect(e).to.deep.include({
nodes: [operationNode],
positions: [0],
locations: [{ line: 1, column: 1 }],
});
});
it('converts node without location to undefined source, positions and locations', () => {
const documentNode = parse('{ foo }', { noLocation: true });
const e = new GraphQLError('msg', documentNode);
expect(e).to.deep.include({
nodes: [documentNode],
source: undefined,
positions: undefined,
locations: undefined,
});
});
it('converts source and positions to locations', () => {
const e = new GraphQLError('msg', null, source, [6]);
expect(e).to.have.property('source', source);
expect(e).to.deep.include({
nodes: undefined,
positions: [6],
locations: [{ line: 2, column: 5 }],
});
});
it('serializes to include all standard fields', () => {
const eShort = new GraphQLError('msg');
expect(JSON.stringify(eShort, null, 2) + '\n').to.equal(dedent`
{
"message": "msg"
}
`);
const path = ['path', 2, 'field'];
const extensions = { foo: 'bar' };
const eFull = new GraphQLError(
'msg',
fieldNode,
undefined,
undefined,
path,
undefined,
extensions,
);
// We should try to keep order of fields stable
// Changing it wouldn't be breaking change but will fail some tests in other libraries.
expect(JSON.stringify(eFull, null, 2) + '\n').to.equal(dedent`
{
"message": "msg",
"locations": [
{
"line": 2,
"column": 3
}
],
"path": [
"path",
2,
"field"
],
"extensions": {
"foo": "bar"
}
}
`);
});
});
describe('printError', () => {
it('prints an error without location', () => {
const error = new GraphQLError('Error without location');
expect(printError(error)).to.equal('Error without location');
});
it('prints an error using node without location', () => {
const error = new GraphQLError(
'Error attached to node without location',
parse('{ foo }', { noLocation: true }),
);
expect(printError(error)).to.equal(
'Error attached to node without location',
);
});
it('prints an error with nodes from different sources', () => {
const docA = parse(
new Source(
dedent`
type Foo {
field: String
}
`,
'SourceA',
),
);
const opA = docA.definitions[0];
invariant(opA.kind === Kind.OBJECT_TYPE_DEFINITION && opA.fields);
const fieldA = opA.fields[0];
const docB = parse(
new Source(
dedent`
type Foo {
field: Int
}
`,
'SourceB',
),
);
const opB = docB.definitions[0];
invariant(opB.kind === Kind.OBJECT_TYPE_DEFINITION && opB.fields);
const fieldB = opB.fields[0];
const error = new GraphQLError('Example error with two nodes', [
fieldA.type,
fieldB.type,
]);
expect(printError(error) + '\n').to.equal(dedent`
Example error with two nodes
SourceA:2:10
1 | type Foo {
2 | field: String
| ^
3 | }
SourceB:2:10
1 | type Foo {
2 | field: Int
| ^
3 | }
`);
});
});