From 4928d513b4fe716c7ed958c294a10ef8517be25e Mon Sep 17 00:00:00 2001
From: Toru Nagashima <public@mysticatea.dev>
Date: Sun, 1 Dec 2019 01:42:45 +0900
Subject: [PATCH] Fix: don't ignore the entry directory (fixes #12604) (#12607)

---
 lib/cli-engine/file-enumerator.js       | 18 +++++++--
 tests/lib/cli-engine/cli-engine.js      | 51 ++++++++++++++++++++++++-
 tests/lib/cli-engine/file-enumerator.js |  2 +-
 3 files changed, 65 insertions(+), 6 deletions(-)

diff --git a/lib/cli-engine/file-enumerator.js b/lib/cli-engine/file-enumerator.js
index 700f8009cf8..b5a082b71a6 100644
--- a/lib/cli-engine/file-enumerator.js
+++ b/lib/cli-engine/file-enumerator.js
@@ -375,9 +375,6 @@ class FileEnumerator {
      * @private
      */
     *_iterateFilesRecursive(directoryPath, options) {
-        if (this._isIgnoredFile(directoryPath + path.sep, options)) {
-            return;
-        }
         debug(`Enter the directory: ${directoryPath}`);
         const { configArrayFactory, extensionRegExp } = internalSlotsMap.get(this);
 
@@ -426,7 +423,20 @@ class FileEnumerator {
 
             // Dive into the sub directory.
             } else if (options.recursive && stat && stat.isDirectory()) {
-                yield* this._iterateFilesRecursive(filePath, options);
+                if (!config) {
+                    config = configArrayFactory.getConfigArrayForFile(
+                        filePath,
+                        { ignoreNotFoundError: true }
+                    );
+                }
+                const ignored = this._isIgnoredFile(
+                    filePath + path.sep,
+                    { ...options, config }
+                );
+
+                if (!ignored) {
+                    yield* this._iterateFilesRecursive(filePath, options);
+                }
             }
         }
 
diff --git a/tests/lib/cli-engine/cli-engine.js b/tests/lib/cli-engine/cli-engine.js
index 1d9bef0905f..1c2411c9776 100644
--- a/tests/lib/cli-engine/cli-engine.js
+++ b/tests/lib/cli-engine/cli-engine.js
@@ -1288,7 +1288,7 @@ describe("CLIEngine", () => {
 
             assert.throws(() => {
                 engine.executeOnFiles(["./tests/fixtures/cli-engine/"]);
-            }, "No files matching './tests/fixtures/cli-engine/' were found.");
+            }, "All files matched by './tests/fixtures/cli-engine/' are ignored.");
         });
 
         it("should throw an error when all given files are ignored via ignore-pattern", () => {
@@ -3628,6 +3628,55 @@ describe("CLIEngine", () => {
                 assert.strictEqual(messages[0].ruleId, "no-console");
             });
         });
+
+        describe("don't ignore the entry directory.", () => {
+            const root = getFixturePath("cli-engine/dont-ignore-entry-dir");
+
+            it("'executeOnFiles(\".\")' should not load config files from outside of \".\".", () => {
+                CLIEngine = defineCLIEngineWithInMemoryFileSystem({
+                    cwd: () => root,
+                    files: {
+                        "../.eslintrc.json": "BROKEN FILE",
+                        ".eslintrc.json": JSON.stringify({ root: true }),
+                        "index.js": "console.log(\"hello\")"
+                    }
+                }).CLIEngine;
+                engine = new CLIEngine();
+
+                // Don't throw "failed to load config file" error.
+                engine.executeOnFiles(".");
+            });
+
+            it("'executeOnFiles(\".\")' should not ignore '.' even if 'ignorePatterns' contains it.", () => {
+                CLIEngine = defineCLIEngineWithInMemoryFileSystem({
+                    cwd: () => root,
+                    files: {
+                        "../.eslintrc.json": JSON.stringify({ ignorePatterns: ["/dont-ignore-entry-dir"] }),
+                        ".eslintrc.json": JSON.stringify({ root: true }),
+                        "index.js": "console.log(\"hello\")"
+                    }
+                }).CLIEngine;
+                engine = new CLIEngine();
+
+                // Don't throw "file not found" error.
+                engine.executeOnFiles(".");
+            });
+
+            it("'executeOnFiles(\"subdir\")' should not ignore './subdir' even if 'ignorePatterns' contains it.", () => {
+                CLIEngine = defineCLIEngineWithInMemoryFileSystem({
+                    cwd: () => root,
+                    files: {
+                        ".eslintrc.json": JSON.stringify({ ignorePatterns: ["/subdir"] }),
+                        "subdir/.eslintrc.json": JSON.stringify({ root: true }),
+                        "subdir/index.js": "console.log(\"hello\")"
+                    }
+                }).CLIEngine;
+                engine = new CLIEngine();
+
+                // Don't throw "file not found" error.
+                engine.executeOnFiles("subdir");
+            });
+        });
     });
 
     describe("getConfigForFile", () => {
diff --git a/tests/lib/cli-engine/file-enumerator.js b/tests/lib/cli-engine/file-enumerator.js
index 3d05f63ab07..c62578c9162 100644
--- a/tests/lib/cli-engine/file-enumerator.js
+++ b/tests/lib/cli-engine/file-enumerator.js
@@ -380,7 +380,7 @@ describe("FileEnumerator", () => {
 
                     assert.throws(() => {
                         listFiles(patterns);
-                    }, `No files matching '${patterns[0]}' were found.`);
+                    }, `All files matched by '${patterns[0]}' are ignored.`);
                 });
 
                 it("should return an ignored file, if ignore option is turned off", () => {