Implement tests for Buffer and BufferSet

src/Buffer.test.ts

@@ -0,0 +1,31 @@
+/**
+ * @license MIT
+ */
+import { assert } from 'chai';
+import { ITerminal } from './Interfaces';
+import { Buffer } from './Buffer';
+import { CircularList } from './utils/CircularList';
+
+describe('Buffer', () => {
+  let terminal: ITerminal;
+  let buffer: Buffer;
+
+  beforeEach(() => {
+    terminal = <any>{
+      cols: 80,
+      rows: 24,
+      scrollback: 1000
+    };
+    buffer = new Buffer(terminal);
+  });
+
+  describe('constructor', () => {
+    it('should create a CircularList with max length equal to scrollback, for its lines', () => {
+      assert.instanceOf(buffer.lines, CircularList);
+      assert.equal(buffer.lines.maxLength, terminal.scrollback);
+    });
+    it('should set the Buffer\'s scrollBottom value equal to the terminal\'s rows -1', () => {
+      assert.equal(buffer.scrollBottom, terminal.rows - 1);
+    });
+  });
+});

src/BufferSet.test.ts

@@ -0,0 +1,49 @@
+/**
+ * @license MIT
+ */
+import { assert } from 'chai';
+import { ITerminal } from './Interfaces';
+import { BufferSet } from './BufferSet';
+import { Buffer } from './Buffer';
+
+describe('BufferSet', () => {
+  let terminal: ITerminal;
+  let bufferSet: BufferSet;
+
+  beforeEach(() => {
+    terminal = <any>{
+      cols: 80,
+      rows: 24,
+      scrollback: 1000
+    };
+    bufferSet = new BufferSet(terminal);
+  });
+
+  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);
+    });
+  });
+});

src/SelectionManager.test.ts

@@ -8,7 +8,7 @@ import { CharMeasure } from './utils/CharMeasure';
 import { CircularList } from './utils/CircularList';
 import { SelectionManager } from './SelectionManager';
 import { SelectionModel } from './SelectionModel';
-import {BufferSet} from './BufferSet';
+import { BufferSet } from './BufferSet';
 
 class TestSelectionManager extends SelectionManager {
   constructor(