Move BufferSet* into common

src/common/buffer/BufferSet.test.ts

@@ -0,0 +1,74 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert } from 'chai';
+import { BufferSet } from 'common/buffer/BufferSet';
+import { Buffer } from 'common/buffer/Buffer';
+import { MockOptionsService, MockBufferService } from 'common/TestUtils.test';
+
+describe('BufferSet', () => {
+  let bufferSet: BufferSet;
+
+  beforeEach(() => {
+    bufferSet = new BufferSet(
+      new MockOptionsService({ scrollback: 1000 }),
+      new MockBufferService(80, 24)
+    );
+  });
+
+  describe('constructor', () => {
+    it('should create two different buffers: alt and normal', () => {
+      assert.instanceOf(bufferSet.normal, Buffer);
+      assert.instanceOf(bufferSet.alt, Buffer);
+      assert.notEqual(bufferSet.normal, bufferSet.alt);
+    });
+  });
+
+  describe('activateNormalBuffer', () => {
+    beforeEach(() => {
+      bufferSet.activateNormalBuffer();
+    });
+
+    it('should set the normal buffer as the currently active buffer', () => {
+      assert.equal(bufferSet.active, bufferSet.normal);
+    });
+  });
+
+  describe('activateAltBuffer', () => {
+    beforeEach(() => {
+      bufferSet.activateAltBuffer();
+    });
+
+    it('should set the alt buffer as the currently active buffer', () => {
+      assert.equal(bufferSet.active, bufferSet.alt);
+    });
+  });
+
+  describe('cursor handling when swapping buffers', () => {
+    beforeEach(() => {
+      bufferSet.normal.x = 0;
+      bufferSet.normal.y = 0;
+      bufferSet.alt.x = 0;
+      bufferSet.alt.y = 0;
+    });
+
+    it('should keep the cursor stationary when activating alt buffer', () => {
+      bufferSet.activateNormalBuffer();
+      bufferSet.active.x = 30;
+      bufferSet.active.y = 10;
+      bufferSet.activateAltBuffer();
+      assert.equal(bufferSet.active.x, 30);
+      assert.equal(bufferSet.active.y, 10);
+    });
+    it('should keep the cursor stationary when activating normal buffer', () => {
+      bufferSet.activateAltBuffer();
+      bufferSet.active.x = 30;
+      bufferSet.active.y = 10;
+      bufferSet.activateNormalBuffer();
+      assert.equal(bufferSet.active.x, 30);
+      assert.equal(bufferSet.active.y, 10);
+    });
+  });
+});