add DifferenceFormatterInterface and inject different implementations for actual usage and for tests

Author: aminzer

src/__tests__/TestDifferenceFormatter.ts

@@ -0,0 +1,16 @@
+import { DifferenceFormatterInterface } from '../formatters/index.js';
+
+class ChalkDifferenceFormatter implements DifferenceFormatterInterface {
+  public sourceOnly = (text: string | number): string => {
+    return `<green>${text}</green>`;
+  };
+
+  public targetOnly = (text: string | number): string => {
+    return `<red>${text}</red>`;
+  };
+
+  public different = (text: string | number): string => {
+    return `<yellow>${text}</yellow>`;
+  };
+}
+export default ChalkDifferenceFormatter;

src/__tests__/InMemoryLogger.ts src/__tests__/TestLogger.tssrc/__tests__/InMemoryLogger.ts renamed to src/__tests__/TestLogger.ts

@@ -1,6 +1,6 @@
 import { LoggerInterface } from '../logging/index.js';
 
-class InMemoryLogger implements LoggerInterface {
+class TestLogger implements LoggerInterface {
   private _messages: string[] = [];
   private _singleLineMessages: string[] = [];
 
@@ -30,4 +30,4 @@ class InMemoryLogger implements LoggerInterface {
   }
 }
 
-export default InMemoryLogger;
+export default TestLogger;

src/__tests__/colors.ts

@@ -1,5 +1,6 @@
 import { compareDirectories as compareDirectoriesUtil, FsEntry } from '@aminzer/dir-diff';
 import { CompareDirectoriesArgs, CmdArgs } from '../cmd/index.js';
+import DifferenceFormatterInterface from '../formatters/DifferenceFormatterInterface.js';
 import { DifferenceType } from '../constants/index.js';
 import { LoggerInterface } from '../logging/index.js';
 import { ComparisonProgress } from '../models/index.js';
@@ -20,9 +21,11 @@ const {
 const compareDirectories = async ({
   cmdArgs,
   logger,
+  differenceFormatter,
 }: {
   cmdArgs: CmdArgs;
   logger: LoggerInterface;
+  differenceFormatter: DifferenceFormatterInterface;
 }): Promise<void> => {
   const sourceDirPath = cmdArgs[SOURCE_DIR_PATH] as string;
   const targetDirPath = cmdArgs[TARGET_DIR_PATH] as string;
@@ -44,7 +47,7 @@ const compareDirectories = async ({
   logCmdArgs({ cmdArgs, logger });
   logger.log('');
 
-  const comparisonProgress = new ComparisonProgress({ logger });
+  const comparisonProgress = new ComparisonProgress({ logger, differenceFormatter });
 
   const compareDirectoriesOpts = {
     onSourceOnlyEntry: skipSourceOnly

src/__tests__/compare.test.ts

@@ -0,0 +1,17 @@
+import chalk from 'chalk';
+import DifferenceFormatterInterface from './DifferenceFormatterInterface.js';
+
+class ChalkDifferenceFormatter implements DifferenceFormatterInterface {
+  public sourceOnly = (text: string | number): string => {
+    return chalk.green(text);
+  };
+
+  public targetOnly = (text: string | number): string => {
+    return chalk.red(text);
+  };
+
+  public different = (text: string | number): string => {
+    return chalk.yellow(text);
+  };
+}
+export default ChalkDifferenceFormatter;

src/colors/colors.ts

@@ -0,0 +1,9 @@
+interface DifferenceFormatterInterface {
+  sourceOnly: (text: string | number) => string;
+
+  targetOnly: (text: string | number) => string;
+
+  different: (text: string | number) => string;
+}
+
+export default DifferenceFormatterInterface;

src/colors/index.ts

@@ -0,0 +1,2 @@
+export { default as ChalkDifferenceFormatter } from './ChalkDifferenceFormatter.js';
+export { default as DifferenceFormatterInterface } from './DifferenceFormatterInterface.js';