This commit addresses issues #264 and #304, where users were not receiving error messages when script execution failed due to antivirus intervention, particularly with Microsoft Defender. Now, desktop app users will see a detailed error message with guidance on next steps if script saving or execution fails due to antivirus removal. Key changes: - Implement a check to detect failure in file writing, including reading the written file back. This method effectively detects antivirus interventions, as the read operation triggers an antivirus scan, leading to file deletion by the antivirus. - Introduce a specific error message for scenarios where an antivirus intervention is detected.
This commit is contained in:
undergroundwires
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import { constants } from 'node:fs';
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import { describe, it, expect } from 'vitest';
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import { Logger } from '@/application/Common/Log/Logger';
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import { LoggerStub } from '@tests/unit/shared/Stubs/LoggerStub';
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import { FunctionKeys } from '@/TypeHelpers';
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import { sequenceEqual } from '@/application/Common/Array';
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import { FileWriteErrorType } from '@/infrastructure/ReadbackFileWriter/ReadbackFileWriter';
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import { expectExists } from '@tests/shared/Assertions/ExpectExists';
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import { FileReadWriteOperations, NodeReadbackFileWriter } from '@/infrastructure/ReadbackFileWriter/NodeReadbackFileWriter';
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import { FileReadWriteOperationsStub } from './FileReadWriteOperationsStub';
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describe('NodeReadbackFileWriter', () => {
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describe('writeAndVerifyFile', () => {
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describe('successful write and verify operations', () => {
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it('confirms successful operation', async () => {
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// arrange
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const context = new NodeReadbackFileWriterTestSetup();
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// act
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const { success } = await context.writeAndVerifyFile();
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// assert
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expect(success).to.equal(true);
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});
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describe('file write operations', () => {
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it('writes to specified path', async () => {
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// arrange
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const expectedFilePath = 'test.txt';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFilePath(expectedFilePath)
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.withFileSystem(fileSystemStub);
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// act
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await context.writeAndVerifyFile();
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// assert
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const fileWriteCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'writeFile');
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expect(fileWriteCalls).to.have.lengthOf(1);
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const [actualFilePath] = fileWriteCalls[0].args;
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expect(actualFilePath).to.equal(expectedFilePath);
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});
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it('writes specified contents', async () => {
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// arrange
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const expectedFileContents = 'expected file contents';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub)
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.withFileContents(expectedFileContents);
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// act
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await context.writeAndVerifyFile();
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// assert
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const fileWriteCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'writeFile');
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expect(fileWriteCalls).to.have.lengthOf(1);
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const [,actualFileContents] = fileWriteCalls[0].args;
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expect(actualFileContents).to.equal(expectedFileContents);
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});
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it('uses correct encoding', async () => {
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// arrange
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const expectedEncoding: NodeJS.BufferEncoding = 'utf-8';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub);
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// act
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await context.writeAndVerifyFile();
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// assert
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const fileWriteCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'writeFile');
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expect(fileWriteCalls).to.have.lengthOf(1);
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const [,,actualEncoding] = fileWriteCalls[0].args;
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expect(actualEncoding).to.equal(expectedEncoding);
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});
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});
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describe('existence verification', () => {
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it('checks correct path', async () => {
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// arrange
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const expectedFilePath = 'test-file-path';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub)
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.withFilePath(expectedFilePath);
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// act
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await context.writeAndVerifyFile();
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// assert
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const accessCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'access');
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expect(accessCalls).to.have.lengthOf(1);
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const [actualFilePath] = accessCalls[0].args;
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expect(actualFilePath).to.equal(expectedFilePath);
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});
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it('uses correct mode', async () => {
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// arrange
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const expectedMode = constants.F_OK;
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub);
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// act
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await context.writeAndVerifyFile();
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// assert
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const accessCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'access');
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expect(accessCalls).to.have.lengthOf(1);
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const [,actualMode] = accessCalls[0].args;
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expect(actualMode).to.equal(expectedMode);
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});
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});
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describe('content verification', () => {
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it('reads from correct path', async () => {
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// arrange
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const expectedFilePath = 'expected-file-path.txt';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub)
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.withFilePath(expectedFilePath);
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// act
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await context.writeAndVerifyFile();
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// assert
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const fileReadCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'readFile');
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expect(fileReadCalls).to.have.lengthOf(1);
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const [actualFilePath] = fileReadCalls[0].args;
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expect(actualFilePath).to.equal(expectedFilePath);
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});
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it('uses correct encoding', async () => {
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// arrange
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const expectedEncoding: NodeJS.BufferEncoding = 'utf-8';
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub);
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// act
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await context.writeAndVerifyFile();
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// assert
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const fileReadCalls = fileSystemStub.callHistory.filter((c) => c.methodName === 'readFile');
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expect(fileReadCalls).to.have.lengthOf(1);
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const [,actualEncoding] = fileReadCalls[0].args;
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expect(actualEncoding).to.equal(expectedEncoding);
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});
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});
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it('executes file system operations in correct sequence', async () => {
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// arrange
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const expectedOrder: ReadonlyArray<FunctionKeys<FileReadWriteOperations>> = [
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'writeFile',
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'access',
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'readFile',
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];
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const fileSystemStub = new FileReadWriteOperationsStub();
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const context = new NodeReadbackFileWriterTestSetup()
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.withFileSystem(fileSystemStub);
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// act
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await context.writeAndVerifyFile();
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// assert
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const actualOrder = fileSystemStub.callHistory.map((c) => c.methodName);
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expect(sequenceEqual(expectedOrder, actualOrder)).to.equal(true);
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});
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});
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describe('error handling', () => {
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const testScenarios: ReadonlyArray<{
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readonly description: string;
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readonly expectedErrorType: FileWriteErrorType;
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readonly expectedErrorMessage: string;
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buildFaultyContext(
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setup: NodeReadbackFileWriterTestSetup,
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errorMessage: string,
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): NodeReadbackFileWriterTestSetup;
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}> = [
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{
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description: 'writing failure',
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expectedErrorType: 'WriteOperationFailed',
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expectedErrorMessage: 'Error when writing file',
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buildFaultyContext: (setup, errorMessage) => {
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const fileSystemStub = new FileReadWriteOperationsStub();
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fileSystemStub.writeFile = () => Promise.reject(errorMessage);
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return setup
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.withFileSystem(fileSystemStub);
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},
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},
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{
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description: 'existence verification error',
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expectedErrorType: 'FileExistenceVerificationFailed',
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expectedErrorMessage: 'Access denied',
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buildFaultyContext: (setup, errorMessage) => {
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const fileSystemStub = new FileReadWriteOperationsStub();
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fileSystemStub.access = () => Promise.reject(errorMessage);
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return setup
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.withFileSystem(fileSystemStub);
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},
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},
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{
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description: 'reading failure',
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expectedErrorType: 'ReadVerificationFailed',
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expectedErrorMessage: 'Read error',
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buildFaultyContext: (setup, errorMessage) => {
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const fileSystemStub = new FileReadWriteOperationsStub();
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fileSystemStub.readFile = () => Promise.reject(errorMessage);
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return setup
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.withFileSystem(fileSystemStub);
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},
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},
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{
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description: 'content match failure',
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expectedErrorType: 'ContentVerificationFailed',
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expectedErrorMessage: 'The contents of the written file do not match the expected contents.',
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buildFaultyContext: (setup) => {
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const fileSystemStub = new FileReadWriteOperationsStub();
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fileSystemStub.readFile = () => Promise.resolve('different contents');
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return setup
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.withFileSystem(fileSystemStub);
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},
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},
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];
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testScenarios.forEach(({
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description, expectedErrorType, expectedErrorMessage, buildFaultyContext,
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}) => {
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it(`handles error - ${description}`, async () => {
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// arrange
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const context = buildFaultyContext(
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new NodeReadbackFileWriterTestSetup(),
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expectedErrorMessage,
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);
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// act
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const { success, error } = await context.writeAndVerifyFile();
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// assert
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expect(success).to.equal(false);
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expectExists(error);
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expect(error.message).to.include(expectedErrorMessage);
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expect(error.type).to.equal(expectedErrorType);
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});
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it(`logs error - ${description}`, async () => {
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// arrange
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const loggerStub = new LoggerStub();
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const context = buildFaultyContext(
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new NodeReadbackFileWriterTestSetup()
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.withLogger(loggerStub),
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expectedErrorMessage,
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);
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// act
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await context.writeAndVerifyFile();
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// assert
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loggerStub.assertLogsContainMessagePart('error', expectedErrorMessage);
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});
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});
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});
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});
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});
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class NodeReadbackFileWriterTestSetup {
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private logger: Logger = new LoggerStub();
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private fileSystem: FileReadWriteOperations = new FileReadWriteOperationsStub();
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private filePath = '/test/file/path.txt';
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private fileContents = 'test file contents';
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public withLogger(logger: Logger): this {
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this.logger = logger;
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return this;
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}
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public withFileSystem(fileSystem: FileReadWriteOperations): this {
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this.fileSystem = fileSystem;
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return this;
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}
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public withFilePath(filePath: string): this {
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this.filePath = filePath;
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return this;
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}
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public withFileContents(fileContents: string): this {
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this.fileContents = fileContents;
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return this;
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}
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public writeAndVerifyFile(): ReturnType<NodeReadbackFileWriter['writeAndVerifyFile']> {
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const writer = new NodeReadbackFileWriter(
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this.logger,
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this.fileSystem,
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);
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return writer.writeAndVerifyFile(
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this.filePath,
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this.fileContents,
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);
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}
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}
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