forked from graphql/graphql-js
/
printer-test.js
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/
printer-test.js
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import { expect } from 'chai';
import { describe, it } from 'mocha';
import { dedent, dedentString } from '../../__testUtils__/dedent';
import { kitchenSinkQuery } from '../../__testUtils__/kitchenSinkQuery';
import { parse } from '../parser';
import { print } from '../printer';
describe('Printer: Query document', () => {
it('does not alter ast', () => {
const ast = parse(kitchenSinkQuery);
const astBefore = JSON.stringify(ast);
print(ast);
expect(JSON.stringify(ast)).to.equal(astBefore);
});
it('prints minimal ast', () => {
const ast = { kind: 'Field', name: { kind: 'Name', value: 'foo' } };
expect(print(ast)).to.equal('foo');
});
it('produces helpful error messages', () => {
const badAST = { random: 'Data' };
// $FlowExpectedError[incompatible-call]
expect(() => print(badAST)).to.throw(
'Invalid AST Node: { random: "Data" }.',
);
});
it('correctly prints non-query operations without name', () => {
const queryASTShorthanded = parse('query { id, name }');
expect(print(queryASTShorthanded)).to.equal(dedent`
{
id
name
}
`);
const mutationAST = parse('mutation { id, name }');
expect(print(mutationAST)).to.equal(dedent`
mutation {
id
name
}
`);
const queryASTWithArtifacts = parse(
'query ($foo: TestType) @testDirective { id, name }',
);
expect(print(queryASTWithArtifacts)).to.equal(dedent`
query ($foo: TestType) @testDirective {
id
name
}
`);
const mutationASTWithArtifacts = parse(
'mutation ($foo: TestType) @testDirective { id, name }',
);
expect(print(mutationASTWithArtifacts)).to.equal(dedent`
mutation ($foo: TestType) @testDirective {
id
name
}
`);
});
it('prints query with variable directives', () => {
const queryASTWithVariableDirective = parse(
'query ($foo: TestType = {a: 123} @testDirective(if: true) @test) { id }',
);
expect(print(queryASTWithVariableDirective)).to.equal(dedent`
query ($foo: TestType = {a: 123} @testDirective(if: true) @test) {
id
}
`);
});
it('keeps arguments on one line if line is short (<= 80 chars)', () => {
const printed = print(
parse('{trip(wheelchair:false arriveBy:false){dateTime}}'),
);
expect(printed).to.equal(
dedent`
{
trip(wheelchair: false, arriveBy: false) {
dateTime
}
}
`,
);
});
it('puts arguments on multiple lines if line is long (> 80 chars)', () => {
const printed = print(
parse(
'{trip(wheelchair:false arriveBy:false includePlannedCancellations:true transitDistanceReluctance:2000){dateTime}}',
),
);
expect(printed).to.equal(
dedent`
{
trip(
wheelchair: false
arriveBy: false
includePlannedCancellations: true
transitDistanceReluctance: 2000
) {
dateTime
}
}
`,
);
});
it('Legacy: prints fragment with variable directives', () => {
const queryASTWithVariableDirective = parse(
'fragment Foo($foo: TestType @test) on TestType @testDirective { id }',
{ allowLegacyFragmentVariables: true },
);
expect(print(queryASTWithVariableDirective)).to.equal(dedent`
fragment Foo($foo: TestType @test) on TestType @testDirective {
id
}
`);
});
it('Legacy: correctly prints fragment defined variables', () => {
const fragmentWithVariable = parse(
`
fragment Foo($a: ComplexType, $b: Boolean = false) on TestType {
id
}
`,
{ allowLegacyFragmentVariables: true },
);
expect(print(fragmentWithVariable)).to.equal(dedent`
fragment Foo($a: ComplexType, $b: Boolean = false) on TestType {
id
}
`);
});
it('prints kitchen sink', () => {
const printed = print(parse(kitchenSinkQuery));
expect(printed).to.equal(
// $FlowFixMe[incompatible-call]
dedentString(String.raw`
query queryName($foo: ComplexType, $site: Site = MOBILE) @onQuery {
whoever123is: node(id: [123, 456]) {
id
... on User @onInlineFragment {
field2 {
id
alias: field1(first: 10, after: $foo) @include(if: $foo) {
id
...frag @onFragmentSpread
}
}
}
... @skip(unless: $foo) {
id
}
... {
id
}
}
}
mutation likeStory @onMutation {
like(story: 123) @onField {
story {
id @onField
}
}
}
subscription StoryLikeSubscription($input: StoryLikeSubscribeInput) @onSubscription {
storyLikeSubscribe(input: $input) {
story {
likers {
count
}
likeSentence {
text
}
}
}
}
fragment frag on Friend @onFragmentDefinition {
foo(
size: $size
bar: $b
obj: {key: "value", block: """
block string uses \"""
"""}
)
}
{
unnamed(truthy: true, falsy: false, nullish: null)
query
}
{
__typename
}
`),
);
});
});