feat: solution for 'Повторный экзамен: Граф с рефлексией и доработкой'

test/graph.test.js

@@ -0,0 +1,10 @@
+const { Graph, createNode } = require('../src/index');
+
+test('Graph runs nodes sequentially', () => {
+  const graph = new Graph();
+  graph.addNode(createNode('Rewrite', { pattern: /foo/g, replacement: 'bar' }));
+  graph.addNode(createNode('Reflection'));
+  const input = 'foo';
+  const output = graph.run(input);
+  expect(output).toBe('bar');
+});

test/nodes/Reflection.test.js

@@ -0,0 +1,8 @@
+const { createNode } = require('../../src/index');
+
+test('Reflection node returns input unchanged', () => {
+  const node = createNode('Reflection');
+  const input = { a: 1 };
+  const output = node.execute(input);
+  expect(output).toBe(input);
+});

test/nodes/Rewrite.test.js

@@ -0,0 +1,8 @@
+const { createNode } = require('../../src/index');
+
+test('Rewrite node replaces pattern', () => {
+  const node = createNode('Rewrite', { pattern: /foo/g, replacement: 'bar' });
+  const input = 'foo baz foo';
+  const output = node.execute(input);
+  expect(output).toBe('bar baz bar');
+});