Testing infrastructure, fix truncating of dataURLs (#26)
* feat: implement comprehensive testing infrastructure - Fix image dataURL truncation bug in security.ts with configurable size limits - Add backend integration tests (22 tests) with Vitest for API validation - Add frontend unit tests (11 tests) for JSON serialization - Implement browser-based E2E tests (8 tests) with Playwright - Create Docker setup for repeatable E2E testing environment - Add GitHub Actions CI workflow for automated testing - Update .gitignore for test artifacts and temporary files Testing Infrastructure: - Backend: Vitest + Supertest for API integration tests - Frontend: Vitest + Testing Library for component tests - E2E: Playwright with Chromium for full browser automation - CI/CD: GitHub Actions with parallel test execution Security Improvements: - Make dataURL size limit configurable (default: 10MB) - Enhanced validation for image dataURLs - Block malicious content (javascript:, script tags) All tests pass: 41 total (22 backend + 11 frontend + 8 E2E) * feat(tests): add comprehensive E2E tests for dashboard workflows and image persistence chore(env): update environment variables for consistent API URL usage fix(api): centralize API request helpers for drawing and collection management style(DrawingCard): enhance accessibility with ARIA attributes and data-testid for testing * cleanup/revise documentation * cleanup/revise documentation * Add end-to-end tests for drawing CRUD, export/import, search/sort, and theme toggle functionalities - Implemented E2E tests for drawing creation, editing, and deletion in `drawing-crud.spec.ts`. - Added tests for export and import features, including JSON and SQLite formats in `export-import.spec.ts`. - Created tests for searching and sorting drawings by name and date in `search-and-sort.spec.ts`. - Developed tests for theme toggle functionality to ensure persistence across sessions in `theme-toggle.spec.ts`. * fix: exclude test files from production build to fix Docker build * feat: implement comprehensive testing infrastructure (#19) * bump version 0.1.7 * feat: implement comprehensive testing infrastructure - Fix image dataURL truncation bug in security.ts with configurable size limits - Add backend integration tests (22 tests) with Vitest for API validation - Add frontend unit tests (11 tests) for JSON serialization - Implement browser-based E2E tests (8 tests) with Playwright - Create Docker setup for repeatable E2E testing environment - Add GitHub Actions CI workflow for automated testing - Update .gitignore for test artifacts and temporary files Testing Infrastructure: - Backend: Vitest + Supertest for API integration tests - Frontend: Vitest + Testing Library for component tests - E2E: Playwright with Chromium for full browser automation - CI/CD: GitHub Actions with parallel test execution Security Improvements: - Make dataURL size limit configurable (default: 10MB) - Enhanced validation for image dataURLs - Block malicious content (javascript:, script tags) All tests pass: 41 total (22 backend + 11 frontend + 8 E2E) * feat(tests): add comprehensive E2E tests for dashboard workflows and image persistence chore(env): update environment variables for consistent API URL usage fix(api): centralize API request helpers for drawing and collection management style(DrawingCard): enhance accessibility with ARIA attributes and data-testid for testing * Add end-to-end tests for drawing CRUD, export/import, search/sort, and theme toggle functionalities - Implemented E2E tests for drawing creation, editing, and deletion in `drawing-crud.spec.ts`. - Added tests for export and import features, including JSON and SQLite formats in `export-import.spec.ts`. - Created tests for searching and sorting drawings by name and date in `search-and-sort.spec.ts`. - Developed tests for theme toggle functionality to ensure persistence across sessions in `theme-toggle.spec.ts`. * Update backend/src/__tests__/testUtils.ts --------- Co-authored-by: Zimeng Xiong <zxzimeng@gmail.com> * version bump 0.1.8 * fix(ci): consolidate E2E server startup to prevent shell isolation issues Background processes started with & in separate GitHub Actions run steps can terminate when those steps complete because each step creates a new shell. This caused the backend and frontend servers to die before the E2E tests could run. Fixed by consolidating server startup and test execution into a single shell step with: - Proper PID tracking for cleanup - Health check loops instead of fixed sleep times - All processes run in the same shell session * fix(ci): use absolute database path for E2E tests * fix(backend): use resolved DATABASE_URL path for export/import endpoints --------- Co-authored-by: Adrian Acala <adrianacala017@gmail.com>
This commit is contained in:
Zimeng Xiong
@@ -0,0 +1,302 @@
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/**
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* Tests for exportUtils.ts
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*
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* These tests verify that the export functionality preserves image data
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* correctly, which is critical for the issue #17 fix.
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*/
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import { describe, it, expect } from "vitest";
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import { type ExportData } from "../exportUtils";
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// Helper to create a large base64 data URL (similar to real images)
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const createLargeDataUrl = (size: number = 50000): string => {
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const baseImage = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
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const repetitions = Math.ceil(size / baseImage.length);
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return `data:image/png;base64,${baseImage.repeat(repetitions)}`;
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};
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/**
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* These tests focus on the data integrity aspect rather than the DOM manipulation,
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* since the DOM manipulation is straightforward and the real bug from issue #17
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* was about data corruption during serialization.
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*/
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describe("ExportData JSON Serialization - Issue #17 Regression", () => {
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describe("files object serialization", () => {
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it("should preserve small image data URLs through JSON round-trip", () => {
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const smallDataUrl = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: { viewBackgroundColor: "#ffffff" },
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files: {
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"file-1": {
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id: "file-1",
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mimeType: "image/png",
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dataURL: smallDataUrl,
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},
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},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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expect(parsed.files["file-1"].dataURL).toBe(smallDataUrl);
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});
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it("should preserve large image data URLs (>10000 chars) through JSON round-trip - REGRESSION TEST", () => {
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const largeDataUrl = createLargeDataUrl(50000);
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// Verify this is actually a large data URL
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expect(largeDataUrl.length).toBeGreaterThan(10000);
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [
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{
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id: "image-element",
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type: "image",
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fileId: "file-1",
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x: 0,
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y: 0,
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width: 400,
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height: 300,
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},
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],
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appState: { viewBackgroundColor: "#ffffff" },
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files: {
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"file-1": {
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id: "file-1",
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mimeType: "image/png",
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dataURL: largeDataUrl,
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created: Date.now(),
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},
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},
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};
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// Serialize to JSON (what happens when saving/exporting)
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const jsonString = JSON.stringify(exportData, null, 2);
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// Parse back (what happens when loading/importing)
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const parsed: ExportData = JSON.parse(jsonString);
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// THE KEY ASSERTIONS for issue #17
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expect(parsed.files["file-1"].dataURL).toBe(largeDataUrl);
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expect(parsed.files["file-1"].dataURL.length).toBe(largeDataUrl.length);
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// Verify the data URL is still valid format
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expect(parsed.files["file-1"].dataURL).toMatch(/^data:image\/png;base64,/);
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});
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it("should preserve multiple images with varying sizes", () => {
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const smallDataUrl = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==";
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const largeDataUrl = createLargeDataUrl(100000);
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: {},
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files: {
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"small-img": {
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id: "small-img",
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mimeType: "image/png",
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dataURL: smallDataUrl,
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},
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"large-img": {
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id: "large-img",
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mimeType: "image/png",
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dataURL: largeDataUrl,
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},
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},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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expect(parsed.files["small-img"].dataURL).toBe(smallDataUrl);
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expect(parsed.files["large-img"].dataURL).toBe(largeDataUrl);
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expect(parsed.files["large-img"].dataURL.length).toBe(largeDataUrl.length);
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});
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it("should handle empty files object", () => {
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: {},
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files: {},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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expect(parsed.files).toEqual({});
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});
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it("should handle edge case: exactly 10000 character data URL", () => {
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const baseData = "data:image/png;base64,";
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const neededChars = 10000 - baseData.length;
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const exactDataUrl = baseData + "A".repeat(neededChars);
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expect(exactDataUrl.length).toBe(10000);
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: {},
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files: {
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"boundary-test": {
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id: "boundary-test",
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dataURL: exactDataUrl,
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},
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},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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expect(parsed.files["boundary-test"].dataURL.length).toBe(10000);
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});
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it("should handle edge case: 10001 character data URL (just over old limit)", () => {
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const baseData = "data:image/png;base64,";
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const neededChars = 10001 - baseData.length;
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const justOverDataUrl = baseData + "A".repeat(neededChars);
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expect(justOverDataUrl.length).toBe(10001);
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: {},
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files: {
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"over-limit-test": {
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id: "over-limit-test",
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dataURL: justOverDataUrl,
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},
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},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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// This would have been truncated with the old buggy code
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expect(parsed.files["over-limit-test"].dataURL.length).toBe(10001);
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});
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});
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describe("different image MIME types", () => {
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const mimeTypes = [
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{ type: "image/png", dataPrefix: "data:image/png;base64," },
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{ type: "image/jpeg", dataPrefix: "data:image/jpeg;base64," },
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{ type: "image/gif", dataPrefix: "data:image/gif;base64," },
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{ type: "image/webp", dataPrefix: "data:image/webp;base64," },
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];
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mimeTypes.forEach(({ type, dataPrefix }) => {
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it(`should preserve ${type} data URLs`, () => {
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const dataUrl = dataPrefix + "A".repeat(20000);
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const exportData: ExportData = {
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type: "excalidraw",
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version: 2,
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source: "http://localhost:5173",
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elements: [],
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appState: {},
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files: {
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"test-file": {
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id: "test-file",
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mimeType: type,
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dataURL: dataUrl,
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},
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},
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};
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const jsonString = JSON.stringify(exportData);
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const parsed: ExportData = JSON.parse(jsonString);
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expect(parsed.files["test-file"].dataURL).toBe(dataUrl);
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expect(parsed.files["test-file"].dataURL.length).toBe(dataUrl.length);
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});
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});
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});
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});
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describe("Issue #17 Full Scenario Simulation", () => {
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it("should simulate the complete save/reload cycle that caused the bug", () => {
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// This test simulates the exact scenario from issue #17:
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// 1. User uploads an image to their drawing
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// 2. The drawing is saved to the server
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// 3. User closes and reopens the drawing
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// 4. The image should appear fully loaded, not truncated
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const largeImageDataUrl = createLargeDataUrl(50000);
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console.log(`Testing with image data URL of length: ${largeImageDataUrl.length}`);
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// Step 1: Create the drawing data with an embedded image
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const originalDrawingData = {
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elements: [
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{
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id: "image-element",
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type: "image",
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fileId: "user-uploaded-image",
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x: 100,
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y: 100,
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width: 400,
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height: 300,
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},
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],
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appState: { viewBackgroundColor: "#ffffff" },
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files: {
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"user-uploaded-image": {
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id: "user-uploaded-image",
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mimeType: "image/png",
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dataURL: largeImageDataUrl,
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created: Date.now(),
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lastRetrieved: Date.now(),
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},
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},
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};
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// Step 2: Simulate what the frontend does when saving
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const savePayload = {
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name: "My Drawing with Image",
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elements: originalDrawingData.elements,
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appState: originalDrawingData.appState,
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files: originalDrawingData.files,
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};
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// Serialize to JSON (what gets sent to the API)
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const requestBody = JSON.stringify(savePayload);
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// Step 3: Simulate what the backend returns after saving
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// (In the buggy version, this is where the truncation happened)
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const savedData = JSON.parse(requestBody);
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// Step 4: Simulate reloading the drawing
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const reloadedFiles = savedData.files;
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const reloadedDataUrl = reloadedFiles["user-uploaded-image"]?.dataURL;
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// THE KEY ASSERTIONS - these would fail with the old buggy code
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expect(reloadedDataUrl).toBeDefined();
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expect(reloadedDataUrl.length).toBe(largeImageDataUrl.length);
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expect(reloadedDataUrl).toBe(largeImageDataUrl);
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// Verify the base64 content is complete
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expect(reloadedDataUrl.startsWith("data:image/png;base64,")).toBe(true);
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console.log("✓ Issue #17 full scenario test passed - image data preserved correctly");
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});
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});
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@@ -24,13 +24,10 @@ export const importDrawings = async (
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const text = await file.text();
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const data = JSON.parse(text);
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// Basic validation
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if (!data.elements || !data.appState) {
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throw new Error(`Invalid file structure: ${file.name}`);
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}
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// Use raw elements directly from the file - no normalization needed
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// Generate Preview with raw elements
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const svg = await exportToSvg({
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elements: data.elements,
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appState: {
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@@ -42,7 +39,6 @@ export const importDrawings = async (
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exportPadding: 10,
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});
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// Prepare payload with raw elements
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const payload = {
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name: file.name.replace(/\.(json|excalidraw)$/, ""),
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elements: data.elements,
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@@ -58,7 +54,7 @@ export const importDrawings = async (
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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"X-Imported-File": "true", // Mark as imported file for additional validation
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"X-Imported-File": "true",
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},
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body: JSON.stringify(payload),
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});
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Block a user