added test case for loader chaining (#3746)

test/configCases/rule-set/chaining/abc.js

@@ -0,0 +1 @@
+module.exports = ["abc"];

test/configCases/rule-set/chaining/def.js

@@ -0,0 +1 @@
+module.exports = ["def"];

test/configCases/rule-set/chaining/index.js

@@ -0,0 +1,16 @@
+it("should match rule with multiple loaders in 'loader'", function() {
+	var abc = require("./abc");
+	abc.should.be.eql([
+		"abc",
+		"?b",
+		"?a"
+	]);
+});
+it("should match rule with multiple loaders in 'loaders'", function() {
+	var def = require("./def");
+	def.should.be.eql([
+		"def",
+		"?d",
+		"?c"
+	]);
+});

test/configCases/rule-set/chaining/loader.js

@@ -0,0 +1,8 @@
+module.exports = function(source) {
+	var query = this.query;
+	if(typeof query === "object" && typeof query.get === "function") {
+		query = query.get();
+	}
+	return source + "\nmodule.exports.push(" + JSON.stringify(query) + ");";
+};
+

test/configCases/rule-set/chaining/webpack.config.js

@@ -0,0 +1,14 @@
+module.exports = {
+	module: {
+		rules: [
+			{
+				resource: /abc\.js$/,
+				loader: "./loader?a!./loader?b"
+			},
+			{
+				resource: /def\.js$/,
+				loaders: "./loader?c!./loader?d"
+			}
+		]
+	}
+}