Add support for testing computeEditInfo (#129)

__tests__/fixtures/plugin-foo.mjs

@@ -63,6 +63,12 @@ const ruleFunction = (primary, secondaryOptions) => {
 					ruleName,
 					message: messages.rejected(selector),
 					node: rule,
+					fix: {
+						apply: () => {
+							rule.selector = primary;
+						},
+						node: rule,
+					},
 				});
 			}
 		});
@@ -71,5 +77,9 @@ const ruleFunction = (primary, secondaryOptions) => {
 
 ruleFunction.ruleName = ruleName;
 ruleFunction.messages = messages;
+ruleFunction.meta = {
+	url: 'plugin/foo',
+	fixable: true,
+};
 
 export default createPlugin(ruleName, ruleFunction);

__tests__/getTestRule.test.mjs

@@ -72,3 +72,32 @@ testRuleWithLoadLint({
 	config: ['.a'],
 	accept: [{ code: '.a {}' }],
 });
+
+testRule({
+	plugins,
+	ruleName,
+	config: ['.a'],
+	computeEditInfo: true,
+
+	accept: [],
+
+	reject: [
+		{
+			code: '#a {}',
+			message: messages.rejected('#a'),
+			fix: {
+				range: [0, 1],
+				text: '.',
+			},
+		},
+		{
+			code: '.a {} #a {}',
+			message: messages.rejected('#a'),
+			description: 'with description',
+			fix: {
+				range: [6, 7],
+				text: '.',
+			},
+		},
+	],
+});

getTestRule.js

@@ -70,6 +70,7 @@ module.exports = function getTestRule(options = {}) {
 						config: stylelintConfig,
 						customSyntax: schema.customSyntax,
 						codeFilename: testCase.codeFilename || schema.codeFilename,
+						computeEditInfo: schema.computeEditInfo,
 					};
 
 					const outputAfterLint = await lint(stylelintOptions).catch(formatExceptions);
@@ -92,6 +93,7 @@ module.exports = function getTestRule(options = {}) {
 							column: expected.column,
 							endLine: expected.endLine,
 							endColumn: expected.endColumn,
+							fix: expected.fix,
 						};
 
 						for (const [key, value] of Object.entries(expectedWarning)) {

index.d.ts

@@ -57,6 +57,13 @@ export type Warning = {
 	 * Expected end column number of the warning.
 	 */
 	endColumn?: number;
+
+	/**
+	 * Expected `EditInfo` of the warning.
+	 *
+	 * @experimental
+	 */
+	fix?: { range: [number, number]; text: string };
 };
 
 /**
@@ -108,6 +115,13 @@ export type TestSchema = {
 	 */
 	fix?: boolean;
 
+	/**
+	 * Turn on computing `EditInfo`. Default: `false`.
+	 *
+	 * @experimental
+	 */
+	computeEditInfo?: boolean;
+
 	/**
 	 * Maps to Stylelint's `plugins` configuration property.
 	 *