Modes basic test coverage

Author: adrianscheit2

src/converters.ts

@@ -1,4 +1,4 @@
-export class Converters {
+export class    Converters {
     private static textEncoder = new TextEncoder();
 
     static byteToHex(value: number): string {

src/mode/ascii-mode-strategy.test.ts

@@ -0,0 +1,25 @@
+import {AsciiModeStrategy} from "./ascii-mode-strategy";
+import {Converters} from "../converters";
+import {ReportType} from "./mode-startegy";
+
+describe('AsciiModeStrategy', () => {
+    const validFrame = ':0401000A000DE4\r\n';
+
+    test('accept a valid frame', () => {
+        const instance = new AsciiModeStrategy(jest.fn());
+
+        instance.receive(Converters.textAsUInt8Array(validFrame));
+
+        expect(instance.report).toHaveBeenCalledTimes(1);
+        expect(instance.report).toHaveBeenCalledWith([0x04, 0x01, 0x00, 0x0A, 0x00, 0x0D], ReportType.valid);
+    });
+
+    test('calculates the correct LRC on send', () => {
+        const instance = new AsciiModeStrategy(jest.fn());
+
+        let result = instance.send([0x04, 0x01, 0x00, 0x0A, 0x00, 0x0D]);
+
+        expect(result).toEqual(Converters.textAsUInt8Array(validFrame));
+        expect(instance.report).toHaveBeenCalledTimes(0);
+    });
+});

src/mode/rtu-mode-strategy.test.ts

@@ -0,0 +1,24 @@
+import {RtuModeStrategy} from "./rtu-mode-strategy";
+import {ReportType} from "./mode-startegy";
+
+describe('RtuModeStrategy', () => {
+    const validFrame = [0x04, 0x01, 0x00, 0x0A, 0x00, 0x0D, 0xdd, 0x98];
+
+    test('extract data from valid frame', () => {
+        const instance = new RtuModeStrategy(jest.fn(), 1000);
+
+        instance.receive(new Uint8Array(validFrame));
+
+        expect(instance.report).toHaveBeenCalledTimes(1);
+        expect(instance.report).toHaveBeenCalledWith(validFrame.slice(0, -2), ReportType.valid);
+    });
+
+    test('prepares the right CRC on send', () => {
+        const instance = new RtuModeStrategy(jest.fn(), 1000);
+
+        let result = instance.send(validFrame.slice(0, -2));
+
+        expect(result).toEqual(new Uint8Array(validFrame));
+        expect(instance.report).toHaveBeenCalledTimes(0);
+    });
+});