feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/lazy/test/complex.js

@@ -0,0 +1,52 @@
+var assert = require('assert');
+var Lazy = require('..');
+var expresso = expresso;
+
+function range(i, j) {
+    var r = [];
+    for (;i<j;i++) r.push(i);
+    return r;
+}
+
+exports['complex'] = function () {
+    var lazy = new Lazy;
+    var data1 = [];
+    var data2 = [];
+    var data3 = [];
+    var joinExecuted = false;
+    lazy
+        .map(function (x) {
+            return 2*x;
+        })
+        .forEach(function (x) {
+            data1.push(x);
+        })
+        .map(function (x) {
+            return x/2;
+        })
+        .take(5)
+        .forEach(function (x) {
+            data2.push(x);
+        })
+        .filter(function (x) {
+            return x % 2 == 0;
+        })
+        .forEach(function (x) {
+            data3.push(x);
+        })
+        .join(function (xs) {
+            joinExecuted = true;
+            assert.deepEqual(xs, [0, 2, 4]);
+        });
+
+    range(0,10).forEach(function (x) {
+        lazy.emit('data', x);
+    });
+    lazy.emit('end');
+
+    assert.deepEqual(data1, range(0,10).map(function (x) { return x*2 }));
+    assert.deepEqual(data2, range(0,5));
+    assert.deepEqual(data3, [0, 2, 4]);
+    assert.ok(joinExecuted);
+}
+