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Dimitri POSTOLOV
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fix false positive case for no-unused-variables rule when variable used in a fragment (#653)
1 parent ed6644b commit f713823

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8 files changed

+147
-11
lines changed

8 files changed

+147
-11
lines changed

‎.changeset/swift-games-walk.md

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---
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'@graphql-eslint/eslint-plugin': minor
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---
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fix false positive case for `no-unused-variables` rule

‎packages/plugin/src/rules/graphql-js-validation.ts

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@@ -103,6 +103,15 @@ const validationToRule = (
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};
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};
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const importFiles = (context: GraphQLESLintRuleContext) => {
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const code = context.getSourceCode().text;
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if (!isGraphQLImportFile(code)) {
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return null;
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}
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// Import documents because file contains '#import' comments
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return processImport(context.getFilename());
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};
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export const GRAPHQL_JS_VALIDATIONS = Object.assign(
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{},
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validationToRule('executable-definitions', 'ExecutableDefinitions', {
@@ -192,14 +201,7 @@ export const GRAPHQL_JS_VALIDATIONS = Object.assign(
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},
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],
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},
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context => {
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const code = context.getSourceCode().text;
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if (!isGraphQLImportFile(code)) {
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return null;
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}
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// Import documents because file contains '#import' comments
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return processImport(context.getFilename());
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}
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importFiles
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),
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validationToRule('known-type-names', 'KnownTypeNames', {
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description: `A GraphQL document is only valid if referenced types (specifically variable definitions and fragment conditions) are defined by the type schema.`,
@@ -257,9 +259,14 @@ export const GRAPHQL_JS_VALIDATIONS = Object.assign(
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return getParentNode(context.getFilename());
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}
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),
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validationToRule('no-unused-variables', 'NoUnusedVariables', {
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description: `A GraphQL operation is only valid if all variables defined by an operation are used, either directly or within a spread fragment.`,
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}),
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validationToRule(
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'no-unused-variables',
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'NoUnusedVariables',
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{
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description: `A GraphQL operation is only valid if all variables defined by an operation are used, either directly or within a spread fragment.`,
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},
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importFiles
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),
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validationToRule('overlapping-fields-can-be-merged', 'OverlappingFieldsCanBeMerged', {
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description: `A selection set is only valid if all fields (including spreading any fragments) either correspond to distinct response names or can be merged without ambiguity.`,
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}),

‎packages/plugin/tests/mocks/no-unused-variables-imported.gql

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fragment UserFields on User {
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firstName
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posts(limit: $limit, offset: $offset) {
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id
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}
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}

‎packages/plugin/tests/mocks/no-unused-variables.gql

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#import UserFields from './no-unused-variables-imported.gql'
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query User($limit: Int!, $offset: Int!) {
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user {
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id
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...UserFields
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}
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}

‎packages/plugin/tests/mocks/user-schema.graphql

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@@ -1,10 +1,13 @@
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type User {
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id: ID!
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firstName: String!
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posts(limit: Int = 25, offset: Int = 0): [Post!]!
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}
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type Post {
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id: ID!
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title: String!
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content: String!
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user: User!
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}
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‎packages/plugin/tests/mocks/user-schema.json

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@@ -42,6 +42,51 @@
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},
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"isDeprecated": false,
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"deprecationReason": null
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},
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{
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"name": "posts",
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"description": null,
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"args": [
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{
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"name": "limit",
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"description": null,
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"type": {
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"kind": "SCALAR",
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"name": "Int",
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"ofType": null
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},
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"defaultValue": "25"
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},
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{
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"name": "offset",
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"description": null,
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"type": {
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"kind": "SCALAR",
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"name": "Int",
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"ofType": null
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},
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"defaultValue": "0"
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}
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],
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"type": {
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"kind": "NON_NULL",
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"name": null,
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"ofType": {
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"kind": "LIST",
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"name": null,
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"ofType": {
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"kind": "NON_NULL",
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"name": null,
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"ofType": {
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"kind": "OBJECT",
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"name": "Post",
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"ofType": null
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}
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}
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}
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},
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"isDeprecated": false,
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"deprecationReason": null
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}
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],
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"inputFields": null,
@@ -69,6 +114,16 @@
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"enumValues": null,
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"possibleTypes": null
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},
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{
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"kind": "SCALAR",
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"name": "Int",
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"description": "The `Int` scalar type represents non-fractional signed whole numeric values. Int can represent values between -(2^31) and 2^31 - 1.",
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"fields": null,
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"inputFields": null,
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"interfaces": null,
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"enumValues": null,
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"possibleTypes": null
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},
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{
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"kind": "OBJECT",
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"name": "Post",
@@ -90,6 +145,38 @@
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"isDeprecated": false,
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"deprecationReason": null
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},
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{
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"name": "title",
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"description": null,
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"args": [],
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"type": {
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"kind": "NON_NULL",
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"name": null,
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"ofType": {
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"kind": "SCALAR",
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"name": "String",
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"ofType": null
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}
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},
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"isDeprecated": false,
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"deprecationReason": null
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},
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{
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"name": "content",
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"description": null,
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"args": [],
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"type": {
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"kind": "NON_NULL",
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"name": null,
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"ofType": {
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"kind": "SCALAR",
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"name": "String",
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"ofType": null
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}
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},
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"isDeprecated": false,
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"deprecationReason": null
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},
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{
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"name": "user",
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"description": null,

‎packages/plugin/tests/mocks/user-schema.ts

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@@ -2,10 +2,13 @@ const SCHEMA = /* GraphQL */ `
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type User {
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id: ID!
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firstName: String!
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posts(limit: Int = 25, offset: Int = 0): [Post!]!
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}
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type Post {
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id: ID!
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title: String!
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content: String!
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user: User!
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}
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‎packages/plugin/tests/no-unused-variables.spec.ts

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import { join } from 'path';
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import { GraphQLRuleTester, rules } from '../src';
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const ruleTester = new GraphQLRuleTester();
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ruleTester.runGraphQLTests('no-unused-variables', rules['no-unused-variables'], {
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valid: [
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{
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filename: join(__dirname, 'mocks/no-unused-variables.gql'),
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code: ruleTester.fromMockFile('no-unused-variables.gql'),
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parserOptions: {
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schema: join(__dirname, 'mocks/user-schema.graphql'),
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},
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},
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],
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invalid: [],
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});

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