From 200ab0e3bdb6959908ffb6a3b425a375d3272e3f Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Sat, 20 Nov 2021 10:47:28 +0100
Subject: [PATCH] add test case

---
 test/Watch.test.js                            | 61 +++++++++++++++++++
 .../watch/node_modules/inline-loader/index.js |  3 +
 .../node_modules/inline-loader/package.json   |  4 ++
 .../node_modules/nested-package1/index.js     |  0
 .../node_modules/nested-package1/package.json |  4 ++
 .../watch/node_modules/package/index.js       |  4 ++
 .../node_modules/nested-package2/index.js     |  0
 .../node_modules/nested-package2/package.json |  4 ++
 .../watch/node_modules/package/package.json   |  4 ++
 .../watch/node_modules/some-loader/index.js   |  3 +
 .../node_modules/some-loader/package.json     |  4 ++
 test/fixtures/watch/src/index.js              |  5 ++
 test/fixtures/watch/src/local.js              |  2 +
 13 files changed, 98 insertions(+)
 create mode 100644 test/Watch.test.js
 create mode 100644 test/fixtures/watch/node_modules/inline-loader/index.js
 create mode 100644 test/fixtures/watch/node_modules/inline-loader/package.json
 create mode 100644 test/fixtures/watch/node_modules/nested-package1/index.js
 create mode 100644 test/fixtures/watch/node_modules/nested-package1/package.json
 create mode 100644 test/fixtures/watch/node_modules/package/index.js
 create mode 100644 test/fixtures/watch/node_modules/package/node_modules/nested-package2/index.js
 create mode 100644 test/fixtures/watch/node_modules/package/node_modules/nested-package2/package.json
 create mode 100644 test/fixtures/watch/node_modules/package/package.json
 create mode 100644 test/fixtures/watch/node_modules/some-loader/index.js
 create mode 100644 test/fixtures/watch/node_modules/some-loader/package.json
 create mode 100644 test/fixtures/watch/src/index.js
 create mode 100644 test/fixtures/watch/src/local.js

diff --git a/test/Watch.test.js b/test/Watch.test.js
new file mode 100644
index 00000000000..cba04e35eab
--- /dev/null
+++ b/test/Watch.test.js
@@ -0,0 +1,61 @@
+"use strict";
+
+require("./helpers/warmup-webpack");
+
+const path = require("path");
+const webpack = require("..");
+const { createFsFromVolume, Volume } = require("memfs");
+
+describe("Watch", () => {
+	jest.setTimeout(10000);
+
+	it("should only compile a single time", done => {
+		let counterBeforeCompile = 0;
+		let counterDone = 0;
+		let counterHandler = 0;
+		const compiler = webpack(
+			{
+				context: path.resolve(__dirname, "fixtures/watch"),
+				watch: true,
+				mode: "development",
+				snapshot: {
+					managedPaths: [/^(.+?[\\/]node_modules[\\/])/]
+				},
+				experiments: {
+					futureDefaults: true
+				},
+				module: {
+					// unsafeCache: false,
+					rules: [
+						{
+							test: /\.js$/,
+							use: "some-loader"
+						}
+					]
+				},
+				plugins: [
+					c => {
+						c.hooks.beforeCompile.tap("test", () => {
+							counterBeforeCompile++;
+						});
+						c.hooks.done.tap("test", () => {
+							counterDone++;
+						});
+					}
+				]
+			},
+			(err, stats) => {
+				if (err) return done(err);
+				if (stats.hasErrors()) return done(new Error(stats.toString()));
+				counterHandler++;
+			}
+		);
+		compiler.outputFileSystem = createFsFromVolume(new Volume());
+		setTimeout(() => {
+			expect(counterBeforeCompile).toBe(1);
+			expect(counterDone).toBe(1);
+			expect(counterHandler).toBe(1);
+			compiler.close(done);
+		}, 5000);
+	});
+});
diff --git a/test/fixtures/watch/node_modules/inline-loader/index.js b/test/fixtures/watch/node_modules/inline-loader/index.js
new file mode 100644
index 00000000000..d444337558e
--- /dev/null
+++ b/test/fixtures/watch/node_modules/inline-loader/index.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+	return x;
+}
diff --git a/test/fixtures/watch/node_modules/inline-loader/package.json b/test/fixtures/watch/node_modules/inline-loader/package.json
new file mode 100644
index 00000000000..4f747245710
--- /dev/null
+++ b/test/fixtures/watch/node_modules/inline-loader/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "inline-loader",
+  "version": "1.0.0"
+}
diff --git a/test/fixtures/watch/node_modules/nested-package1/index.js b/test/fixtures/watch/node_modules/nested-package1/index.js
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/test/fixtures/watch/node_modules/nested-package1/package.json b/test/fixtures/watch/node_modules/nested-package1/package.json
new file mode 100644
index 00000000000..77e1c5ddfea
--- /dev/null
+++ b/test/fixtures/watch/node_modules/nested-package1/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "nested-package1",
+  "version": "1.0.0"
+}
diff --git a/test/fixtures/watch/node_modules/package/index.js b/test/fixtures/watch/node_modules/package/index.js
new file mode 100644
index 00000000000..e1e724de532
--- /dev/null
+++ b/test/fixtures/watch/node_modules/package/index.js
@@ -0,0 +1,4 @@
+import "nested-package1";
+import "nested-package2";
+import "inline-loader!nested-package1";
+import "inline-loader!nested-package2";
diff --git a/test/fixtures/watch/node_modules/package/node_modules/nested-package2/index.js b/test/fixtures/watch/node_modules/package/node_modules/nested-package2/index.js
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/test/fixtures/watch/node_modules/package/node_modules/nested-package2/package.json b/test/fixtures/watch/node_modules/package/node_modules/nested-package2/package.json
new file mode 100644
index 00000000000..99b7bef613e
--- /dev/null
+++ b/test/fixtures/watch/node_modules/package/node_modules/nested-package2/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "nested-package2",
+  "version": "1.0.0"
+}
diff --git a/test/fixtures/watch/node_modules/package/package.json b/test/fixtures/watch/node_modules/package/package.json
new file mode 100644
index 00000000000..75b93e3b25a
--- /dev/null
+++ b/test/fixtures/watch/node_modules/package/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "package",
+  "version": "1.0.0"
+}
diff --git a/test/fixtures/watch/node_modules/some-loader/index.js b/test/fixtures/watch/node_modules/some-loader/index.js
new file mode 100644
index 00000000000..d444337558e
--- /dev/null
+++ b/test/fixtures/watch/node_modules/some-loader/index.js
@@ -0,0 +1,3 @@
+module.exports = function(x) {
+	return x;
+}
diff --git a/test/fixtures/watch/node_modules/some-loader/package.json b/test/fixtures/watch/node_modules/some-loader/package.json
new file mode 100644
index 00000000000..f05476029b9
--- /dev/null
+++ b/test/fixtures/watch/node_modules/some-loader/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "some-loader",
+  "version": "1.0.0"
+}
diff --git a/test/fixtures/watch/src/index.js b/test/fixtures/watch/src/index.js
new file mode 100644
index 00000000000..b79b14a3a0e
--- /dev/null
+++ b/test/fixtures/watch/src/index.js
@@ -0,0 +1,5 @@
+import "package";
+import "inline-loader!package";
+
+import "./local";
+import "inline-loader!./local";
diff --git a/test/fixtures/watch/src/local.js b/test/fixtures/watch/src/local.js
new file mode 100644
index 00000000000..67d46e2b228
--- /dev/null
+++ b/test/fixtures/watch/src/local.js
@@ -0,0 +1,2 @@
+import "package";
+import "inline-loader!package";