Merge pull request #159 from rtfpessoa/test-main

add main tests

Author: rtfpessoa

jest.config.ts

@@ -27,10 +27,10 @@ const jestConfig: JestConfigWithTsJest = {
   coveragePathIgnorePatterns: ['/node_modules/', 'src/__tests__/'],
   coverageThreshold: {
     global: {
-      statements: 19,
-      branches: 10,
-      functions: 33,
-      lines: 19,
+      statements: 75,
+      branches: 53,
+      functions: 63,
+      lines: 75,
     },
   },
 };

src/__tests__/cli-tests.ts

@@ -26,6 +26,8 @@ afterEach(() => {
   jest.clearAllMocks();
 });
 
+process.argv = ['node', 'diff2html.js', '-i', 'stdin', '--', 'test'];
+
 describe('cli', () => {
   describe('getInput', () => {
     test('should readFile when inputType is `file`', async () => {

src/__tests__/main-tests.ts

@@ -0,0 +1,72 @@
+import { jest, expect } from '@jest/globals';
+
+import { Configuration, InputType } from '../types';
+import { Diff2HtmlConfig } from 'diff2html';
+
+let command: typeof import('../main');
+
+const getInputSpy: jest.Mock<(inputType: InputType, inputArgs: string[], ignore: string[]) => Promise<string>> =
+  jest.fn();
+const getOutputSpy: jest.Mock<(options: Diff2HtmlConfig, config: Configuration, input: string) => string> = jest.fn();
+const previewSpy: jest.Mock<(content: string, format: string) => void> = jest.fn();
+jest.unstable_mockModule('../cli', async () => ({
+  getInput: getInputSpy,
+  getOutput: getOutputSpy,
+  preview: previewSpy,
+}));
+
+beforeEach(async () => {
+  command = await import('../main');
+});
+
+afterEach(() => {
+  jest.clearAllMocks();
+});
+
+process.argv = ['node', 'diff2html.js', '-i', 'file', '--', 'test'];
+
+describe('cli', () => {
+  test('should parse input and run', async () => {
+    getInputSpy.mockReturnValue(Promise.resolve('input'));
+    getOutputSpy.mockReturnValue('output');
+    previewSpy.mockReturnValue();
+
+    await command.main();
+
+    expect(getInputSpy).toHaveBeenCalledTimes(1);
+    expect(getInputSpy).toHaveBeenCalledWith('file', ['test'], []);
+
+    expect(getOutputSpy).toHaveBeenCalledTimes(1);
+    expect(getOutputSpy).toHaveBeenCalledWith(
+      {
+        diffMaxChanges: undefined,
+        diffMaxLineLength: undefined,
+        diffStyle: 'word',
+        drawFileList: true,
+        matchWordsThreshold: 0.25,
+        matching: 'none',
+        matchingMaxComparisons: 1000,
+        maxLineLengthHighlight: 10000,
+        maxLineSizeInBlockForComparison: 200,
+        outputFormat: 'line-by-line',
+        renderNothingWhenEmpty: false,
+      },
+      {
+        diffyType: undefined,
+        fileContentToggle: true,
+        formatType: 'html',
+        highlightCode: true,
+        htmlWrapperTemplate: expect.stringContaining('diff2html-cli/template.html'),
+        ignore: [],
+        inputSource: 'file',
+        outputDestinationFile: undefined,
+        outputDestinationType: 'preview',
+        pageHeader: 'Diff to HTML by <a href="https://github.com/rtfpessoa">rtfpessoa</a>',
+        pageTitle: 'Diff to HTML by rtfpessoa',
+        showFilesOpen: false,
+        synchronisedScroll: true,
+      },
+      'input',
+    );
+  });
+});