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node_modules/uglify-js/test/unit/scripts.js

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+var fs = require('fs'),
+	uglify = require('uglify-js'),
+	jsp = uglify.parser,
+	nodeunit = require('nodeunit'),
+	path = require('path'),
+	pro = uglify.uglify;
+
+var Script = process.binding('evals').Script;
+
+var scriptsPath = __dirname;
+
+function compress(code) {
+	var ast = jsp.parse(code);
+	ast = pro.ast_mangle(ast);
+	ast = pro.ast_squeeze(ast, { no_warnings: true });
+        ast = pro.ast_squeeze_more(ast);
+	return pro.gen_code(ast);
+};
+
+var testDir = path.join(scriptsPath, "compress", "test");
+var expectedDir = path.join(scriptsPath, "compress", "expected");
+
+function getTester(script) {
+	return function(test) {
+		var testPath = path.join(testDir, script);
+		var expectedPath = path.join(expectedDir, script);
+		var content = fs.readFileSync(testPath, 'utf-8');
+		var outputCompress = compress(content);
+
+		// Check if the noncompressdata is larger or same size as the compressed data
+		test.ok(content.length >= outputCompress.length);
+
+		// Check that a recompress gives the same result
+		var outputReCompress = compress(content);
+		test.equal(outputCompress, outputReCompress);
+
+		// Check if the compressed output is what is expected
+		var expected = fs.readFileSync(expectedPath, 'utf-8');
+		test.equal(outputCompress, expected.replace(/(\r?\n)+$/, ""));
+
+		test.done();
+	};
+};
+
+var tests = {};
+
+var scripts = fs.readdirSync(testDir);
+for (var i in scripts) {
+	var script = scripts[i];
+	if (/\.js$/.test(script)) {
+		tests[script] = getTester(script);
+	}
+}
+
+module.exports = nodeunit.testCase(tests);