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Complexity for meta fields + test (#92)

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Lines changed: 20 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -35,6 +35,9 @@ import {`
`35`	`35`	`Kind,`
`36`	`36`	`getNamedType,`
`37`	`37`	`GraphQLError,`
	`38`	`+ SchemaMetaFieldDef,`
	`39`	`+ TypeMetaFieldDef,`
	`40`	`+ TypeNameMetaFieldDef,`
`38`	`41`	`} from 'graphql';`
`39`	`42`
`40`	`43`	`export type ComplexityEstimatorArgs = {`
`@@ -307,7 +310,23 @@ export default class QueryComplexity {`
`307`	`310`
`308`	`311`	`switch (childNode.kind) {`
`309`	`312`	`case Kind.FIELD: {`
`310`		`- const field = fields[childNode.name.value];`
	`313`	`+ let field = null;`
	`314`	`+`
	`315`	`+ switch (childNode.name.value) {`
	`316`	`+ case SchemaMetaFieldDef.name:`
	`317`	`+ field = SchemaMetaFieldDef;`
	`318`	`+ break;`
	`319`	`+ case TypeMetaFieldDef.name:`
	`320`	`+ field = TypeMetaFieldDef;`
	`321`	`+ break;`
	`322`	`+ case TypeNameMetaFieldDef.name:`
	`323`	`+ field = TypeNameMetaFieldDef;`
	`324`	`+ break;`
	`325`	`+ default:`
	`326`	`+ field = fields[childNode.name.value];`
	`327`	`+ break;`
	`328`	`+ }`
	`329`	`+`
`311`	`330`	`// Invalid field, should be caught by other validation rules`
`312`	`331`	`if (!field) {`
`313`	`332`	`break;`

Lines changed: 27 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -611,6 +611,33 @@ describe('QueryComplexity analysis', () => {`
`611`	`611`	`expect(complexity2).to.equal(20);`
`612`	`612`	`});`
`613`	`613`
	`614`	`+ it('should calculate complexity for meta fields', () => {`
	`615`	+ const query = parse(`
	`616`	`+ query Primary {`
	`617`	`+ __typename`
	`618`	`+ __type(name: "Primary") {`
	`619`	`+ name`
	`620`	`+ }`
	`621`	`+ __schema {`
	`622`	`+ types {`
	`623`	`+ name`
	`624`	`+ }`
	`625`	`+ }`
	`626`	`+ }`
	`627`	+ `);
	`628`	`+`
	`629`	`+ const complexity = getComplexity({`
	`630`	`+ estimators: [`
	`631`	`+ fieldExtensionsEstimator(),`
	`632`	`+ simpleEstimator({ defaultComplexity: 1 }),`
	`633`	`+ ],`
	`634`	`+ schema,`
	`635`	`+ query,`
	`636`	`+ });`
	`637`	`+`
	`638`	`+ expect(complexity).to.equal(6);`
	`639`	`+ });`
	`640`	`+`
`614`	`641`	`it('should calculate max complexity for fragment on union type', () => {`
`615`	`642`	const query = parse(`
`616`	`643`	`query Primary {`

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