handle relative patterns for exclude

.vscode/launch.json

@@ -4,21 +4,22 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
-       {
-           "type": "node",
-           "request": "launch",
-           "name": "Mocha Tests",
-           "program": "${workspaceFolder}/tslint-runner/node_modules/mocha/bin/_mocha",
-           "args": [
-               "-u",
-               "tdd",
-               "--timeout",
-               "999999",
-               "--colors",
-               "${workspaceFolder}/tslint-runner/out/test",
-               "-g", "getNonOverlappingReplacements"
-           ],
-           "internalConsoleOptions": "openOnSessionStart"
-       }
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Mocha Tests",
+            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+            "args": [
+                "-u",
+                "tdd",
+                "--timeout",
+                "999999",
+                "--colors",
+                "${workspaceFolder}/out/runner/test",
+                // "-g",
+                // "exclude"
+            ],
+            "internalConsoleOptions": "openOnSessionStart"
+        }
     ]
 }

src/runner/index.ts

@@ -1,7 +1,7 @@
 import * as cp from 'child_process';
 import * as fs from 'fs';
 import * as minimatch from 'minimatch';
-import { dirname, delimiter } from 'path';
+import { dirname, delimiter, relative } from 'path';
 import * as tslint from 'tslint'; // this is a dev dependency only
 import * as typescript from 'typescript'; // this is a dev dependency only
 import * as util from 'util';
@@ -208,14 +208,19 @@ export class TsLintRunner {
         this.trace('start doValidate ' + filePath);
         const uri = filePath;
 
-        if (this.fileIsExcluded(configuration, filePath)) {
+        let cwd = configuration.workspaceFolderPath;
+        if (!cwd && typeof contents === "object") {
+            cwd = contents.getCurrentDirectory();
+        }
+
+        if (this.fileIsExcluded(configuration, filePath, cwd)) {
             this.trace(`No linting: file ${filePath} is excluded`);
             return emptyResult;
         }
 
-        if (configuration.workspaceFolderPath) {
-            this.trace(`Changed directory to ${configuration.workspaceFolderPath}`);
-            process.chdir(configuration.workspaceFolderPath);
+        if (cwd) {
+            this.trace(`Changed directory to ${cwd}`);
+            process.chdir(cwd);
         }
 
         const configFile = configuration.configFile || null;
@@ -338,7 +343,7 @@ export class TsLintRunner {
         return this.configCache.configuration;
     }
 
-    private fileIsExcluded(settings: RunConfiguration, filePath: string): boolean {
+    private fileIsExcluded(settings: RunConfiguration, filePath: string, cwd: string | undefined): boolean {
         if (settings.ignoreDefinitionFiles) {
             if (filePath.endsWith('.d.ts')) {
                 return true;
@@ -348,11 +353,11 @@ export class TsLintRunner {
         if (settings.exclude) {
             if (Array.isArray(settings.exclude)) {
                 for (const pattern of settings.exclude) {
-                    if (testForExclusionPattern(filePath, pattern)) {
+                    if (testForExclusionPattern(filePath, pattern, cwd)) {
                         return true;
                     }
                 }
-            } else if (testForExclusionPattern(filePath, settings.exclude)) {
+            } else if (testForExclusionPattern(filePath, settings.exclude, cwd)) {
                 return true;
             }
         }
@@ -390,7 +395,18 @@ export class TsLintRunner {
     }
 }
 
-function testForExclusionPattern(filePath: string, pattern: string): boolean {
+function testForExclusionPattern(filePath: string, pattern: string, cwd: string | undefined): boolean {
+    if (cwd) {
+        // try first as relative
+        const relPath = relative(cwd, filePath);
+        if (minimatch(relPath, pattern, { dot: true })) {
+            return true;
+        }
+        if (relPath === filePath) {
+            return false;
+        }
+    }
+
     return minimatch(filePath, pattern, { dot: true });
 }
 
@@ -433,7 +449,7 @@ function isExcludedFromLinterOptions(
     if (config === undefined || config.linterOptions === undefined || config.linterOptions.exclude === undefined) {
         return false;
     }
-    return config.linterOptions.exclude.some(pattern => testForExclusionPattern(fileName, pattern));
+    return config.linterOptions.exclude.some(pattern => testForExclusionPattern(fileName, pattern, undefined));
 }
 
 function getConfigurationFailureMessage(err: any): string {

src/runner/test/runner.test.ts

@@ -67,7 +67,7 @@ describe('TSLintRunner', () => {
             expect(errorResult.lintResult.warningCount).to.equal(0);
         });
 
-        it('should not return any errors for excluded file', () => {
+        it('should not return any errors for excluded file (absolute path)', () => {
             const filePath = path.join(testDataRoot, 'with-tslint', 'test.ts');
             const result = createTsLintRunner().runTsLint(filePath, fs.readFileSync(filePath).toString(), {
                 exclude: [filePath],
@@ -76,6 +76,17 @@ describe('TSLintRunner', () => {
             expect(result.lintResult.errorCount).to.equal(0);
         });
 
+        it('should not return any errors for excluded file (relative path)', () => {
+            const root = path.join(testDataRoot, 'with-tslint');
+            const filePath = path.join(root, 'test.ts');
+            const result = createTsLintRunner().runTsLint(filePath, fs.readFileSync(filePath).toString(), {
+                workspaceFolderPath: root,
+                exclude: ['test.ts'],
+            } as RunConfiguration);
+
+            expect(result.lintResult.errorCount).to.equal(0);
+        });
+
         it('should set working directory to workspace path', () => {
             const workspacePath = path.join(testDataRoot, 'with-tslint');
             const filePath = path.join(workspacePath, 'test.ts');