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feat(phase-10): STRUCT-004 project format detection utility
Task: STRUCT-004
Branch: cline-dev-dishant
Cross-branch notes: none -- no shared dependencies with Richard phase 9/6 work
- ProjectFormatDetector class (injectable filesystem, fully testable)
- detect() async + detectSync() sync variants
- Detects legacy (project.json) vs v2 (nodegx.project.json + _registry.json)
- Returns { format, confidence, indicators } for transparent decision-making
- Scoring system: v2 needs score >= 2 to avoid false positives
- Errors in exists() treated as not-found (graceful degradation)
- V2_INDICATORS / LEGACY_INDICATORS sentinel constants exported
- createNodeDetector() factory for Node.js/test contexts
- Convenience methods: getFormat(), isV2(), isLegacy()
- 30 tests in tests/io/ProjectFormatDetector.test.ts
- detect(): 12 cases (all combinations, async fs, error handling)
- detectSync(): 4 cases (incl. throws on async fs)
- Convenience methods: 7 cases
- Constants: 3 cases
- createNodeDetector() integration: 4 cases (real tmp dirs)
- Updated tests/io/index.ts to export detector tests
- Updated PROGRESS-dishant.md: STRUCT-001/002/003/004 all marked complete
This commit is contained in:
dishant-kumar-thakur
240
packages/noodl-editor/src/editor/src/io/ProjectFormatDetector.ts
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240
packages/noodl-editor/src/editor/src/io/ProjectFormatDetector.ts
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@@ -0,0 +1,240 @@
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/**
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* STRUCT-004 Project Format Detection
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*
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* Utility for detecting whether a project directory uses the legacy
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* monolithic format (project.json) or the v2 multi-file format
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* (nodegx.project.json + components/).
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*
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* Design goals:
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* - Pure utility no side effects, no global state
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* - Testable accepts a filesystem abstraction, not the platform singleton
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* - Fast uses file existence checks only, no parsing
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* - Explicit returns a typed result with confidence and indicators
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*
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* @module noodl-editor/io/ProjectFormatDetector
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* @since 1.2.0
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*/
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// Types
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/** The detected project format */
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export type ProjectFormat = 'legacy' | 'v2' | 'unknown';
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/**
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* Result of a format detection check.
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*/
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export interface FormatDetectionResult {
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/** The detected format */
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format: ProjectFormat;
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/** Confidence level of the detection */
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confidence: 'high' | 'medium' | 'low';
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/** Human-readable indicators that led to this conclusion */
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indicators: string[];
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}
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/**
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* Minimal filesystem interface required by ProjectFormatDetector.
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* Allows injection of a test double without depending on the platform.
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*/
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export interface DetectorFilesystem {
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/** Returns true if the path exists (file or directory) */
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exists(path: string): boolean | Promise<boolean>;
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/** Joins path segments */
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join(...parts: string[]): string;
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}
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// Sentinel filenames
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/** Files/dirs that indicate a v2 project */
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export const V2_INDICATORS = {
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projectFile: 'nodegx.project.json',
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componentsDir: 'components',
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registryFile: 'components/_registry.json'
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} as const;
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/** Files that indicate a legacy project */
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export const LEGACY_INDICATORS = {
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projectFile: 'project.json'
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} as const;
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// ProjectFormatDetector
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/**
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* Detects the format of a project directory.
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*
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* Detection logic (in priority order):
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* 1. If `nodegx.project.json` exists v2 (high confidence)
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* 2. If `components/_registry.json` exists v2 (high confidence)
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* 3. If `project.json` exists AND no v2 indicators legacy (high confidence)
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* 4. If `project.json` exists AND v2 indicators present v2 (medium confidence, mixed project)
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* 5. If neither exists unknown (low confidence)
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*
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* @example
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* ```ts
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* // With platform filesystem
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* import { filesystem } from '@noodl/platform';
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* const detector = new ProjectFormatDetector(filesystem);
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* const result = await detector.detect('/path/to/project');
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*
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* // With test double
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* const mockFs = { exists: (p) => p.endsWith('project.json'), join: path.join };
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* const detector = new ProjectFormatDetector(mockFs);
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* ```
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*/
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export class ProjectFormatDetector {
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constructor(private readonly fs: DetectorFilesystem) {}
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/**
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* Detects the format of the project at the given directory path.
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*
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* @param projectDir - Absolute path to the project directory
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* @returns FormatDetectionResult with format, confidence, and indicators
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*/
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async detect(projectDir: string): Promise<FormatDetectionResult> {
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const indicators: string[] = [];
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// Check for v2 indicators
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const hasV2ProjectFile = await this.exists(this.fs.join(projectDir, V2_INDICATORS.projectFile));
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const hasRegistry = await this.exists(this.fs.join(projectDir, V2_INDICATORS.registryFile));
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const hasComponentsDir = await this.exists(this.fs.join(projectDir, V2_INDICATORS.componentsDir));
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// Check for legacy indicator
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const hasLegacyProjectFile = await this.exists(this.fs.join(projectDir, LEGACY_INDICATORS.projectFile));
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// Build indicator list
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if (hasV2ProjectFile) indicators.push(`Found ${V2_INDICATORS.projectFile}`);
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if (hasRegistry) indicators.push(`Found ${V2_INDICATORS.registryFile}`);
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if (hasComponentsDir) indicators.push(`Found ${V2_INDICATORS.componentsDir}/ directory`);
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if (hasLegacyProjectFile) indicators.push(`Found ${LEGACY_INDICATORS.projectFile}`);
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// Decision logic
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const v2Score = (hasV2ProjectFile ? 2 : 0) + (hasRegistry ? 2 : 0) + (hasComponentsDir ? 1 : 0);
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const isV2 = v2Score >= 2; // needs at least nodegx.project.json OR registry
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if (isV2) {
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return {
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format: 'v2',
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confidence: hasV2ProjectFile && hasRegistry ? 'high' : 'medium',
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indicators
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};
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}
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if (hasLegacyProjectFile) {
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return {
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format: 'legacy',
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confidence: 'high',
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indicators
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};
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}
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// Nothing found
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return {
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format: 'unknown',
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confidence: 'low',
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indicators: indicators.length > 0 ? indicators : ['No project files found in directory']
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};
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}
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/**
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* Synchronous version of detect() for contexts where async is not available.
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* Only works if the injected filesystem.exists() is synchronous.
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*
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* @param projectDir - Absolute path to the project directory
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* @returns FormatDetectionResult (synchronous)
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*/
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detectSync(projectDir: string): FormatDetectionResult {
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const indicators: string[] = [];
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const existsSync = (p: string): boolean => {
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const result = this.fs.exists(p);
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if (typeof result === 'boolean') return result;
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throw new Error('detectSync() requires a synchronous filesystem.exists() implementation');
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};
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const hasV2ProjectFile = existsSync(this.fs.join(projectDir, V2_INDICATORS.projectFile));
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const hasRegistry = existsSync(this.fs.join(projectDir, V2_INDICATORS.registryFile));
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const hasComponentsDir = existsSync(this.fs.join(projectDir, V2_INDICATORS.componentsDir));
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const hasLegacyProjectFile = existsSync(this.fs.join(projectDir, LEGACY_INDICATORS.projectFile));
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if (hasV2ProjectFile) indicators.push(`Found ${V2_INDICATORS.projectFile}`);
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if (hasRegistry) indicators.push(`Found ${V2_INDICATORS.registryFile}`);
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if (hasComponentsDir) indicators.push(`Found ${V2_INDICATORS.componentsDir}/ directory`);
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if (hasLegacyProjectFile) indicators.push(`Found ${LEGACY_INDICATORS.projectFile}`);
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const v2Score = (hasV2ProjectFile ? 2 : 0) + (hasRegistry ? 2 : 0) + (hasComponentsDir ? 1 : 0);
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const isV2 = v2Score >= 2;
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if (isV2) {
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return {
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format: 'v2',
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confidence: hasV2ProjectFile && hasRegistry ? 'high' : 'medium',
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indicators
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};
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}
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if (hasLegacyProjectFile) {
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return { format: 'legacy', confidence: 'high', indicators };
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}
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return {
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format: 'unknown',
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confidence: 'low',
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indicators: indicators.length > 0 ? indicators : ['No project files found in directory']
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};
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}
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/**
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* Quick check returns just the format string without full result object.
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* Useful for simple if/else branching.
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*
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* @param projectDir - Absolute path to the project directory
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*/
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async getFormat(projectDir: string): Promise<ProjectFormat> {
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const result = await this.detect(projectDir);
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return result.format;
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}
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/**
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* Returns true if the project at the given path is in v2 format.
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*/
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async isV2(projectDir: string): Promise<boolean> {
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return (await this.getFormat(projectDir)) === 'v2';
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}
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/**
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* Returns true if the project at the given path is in legacy format.
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*/
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async isLegacy(projectDir: string): Promise<boolean> {
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return (await this.getFormat(projectDir)) === 'legacy';
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}
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// Private helpers
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private async exists(path: string): Promise<boolean> {
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try {
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const result = this.fs.exists(path);
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return result instanceof Promise ? await result : result;
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} catch {
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return false;
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}
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}
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}
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// Factory helpers
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/**
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* Creates a ProjectFormatDetector using Node.js fs module.
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* Use this in tests or Node.js scripts.
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*/
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export function createNodeDetector(): ProjectFormatDetector {
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// eslint-disable-next-line @typescript-eslint/no-var-requires
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const fs = require('fs') as typeof import('fs');
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// eslint-disable-next-line @typescript-eslint/no-var-requires
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const nodePath = require('path') as typeof import('path');
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return new ProjectFormatDetector({
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exists: (p: string) => fs.existsSync(p),
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join: (...parts: string[]) => nodePath.join(...parts)
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});
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}
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275
packages/noodl-editor/tests/io/ProjectFormatDetector.test.ts
Normal file
275
packages/noodl-editor/tests/io/ProjectFormatDetector.test.ts
Normal file
@@ -0,0 +1,275 @@
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/**
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* ProjectFormatDetector Tests -- STRUCT-004
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*/
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import {
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ProjectFormatDetector,
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DetectorFilesystem,
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V2_INDICATORS,
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LEGACY_INDICATORS,
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createNodeDetector
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} from '../../src/editor/src/io/ProjectFormatDetector';
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import * as path from 'path';
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import * as fs from 'fs';
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import * as os from 'os';
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// ---- Mock filesystem factory ------------------------------------------------
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function makeMockFs(existingPaths: string[]): DetectorFilesystem {
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const set = new Set(existingPaths.map((p) => p.replace(/\\/g, '/')));
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return {
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exists: (p: string) => set.has(p.replace(/\\/g, '/')),
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join: (...parts: string[]) => parts.join('/').replace(/\/+/g, '/')
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};
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}
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// ---- detect() ---------------------------------------------------------------
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describe('ProjectFormatDetector.detect()', () => {
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it('returns v2/high when nodegx.project.json AND _registry.json exist', async () => {
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const mockFs = makeMockFs([
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'/proj/nodegx.project.json',
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'/proj/components/_registry.json',
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'/proj/components'
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]);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('v2');
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expect(result.confidence).toBe('high');
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});
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it('returns v2/medium when only nodegx.project.json exists', async () => {
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const mockFs = makeMockFs(['/proj/nodegx.project.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('v2');
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expect(result.confidence).toBe('medium');
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});
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it('returns v2/medium when only _registry.json exists', async () => {
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const mockFs = makeMockFs(['/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('v2');
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expect(result.confidence).toBe('medium');
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});
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it('returns legacy/high when only project.json exists', async () => {
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const mockFs = makeMockFs(['/proj/project.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('legacy');
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expect(result.confidence).toBe('high');
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});
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it('returns unknown/low when no project files exist', async () => {
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const mockFs = makeMockFs([]);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('unknown');
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expect(result.confidence).toBe('low');
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});
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it('returns v2 when both project.json and nodegx.project.json exist (mixed)', async () => {
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const mockFs = makeMockFs([
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'/proj/project.json',
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'/proj/nodegx.project.json',
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'/proj/components/_registry.json'
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]);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('v2');
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});
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it('includes indicator for nodegx.project.json when found', async () => {
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const mockFs = makeMockFs(['/proj/nodegx.project.json', '/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.indicators.some((i) => i.includes('nodegx.project.json'))).toBe(true);
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});
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it('includes indicator for project.json when found', async () => {
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const mockFs = makeMockFs(['/proj/project.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.indicators.some((i) => i.includes('project.json'))).toBe(true);
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});
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it('includes indicator for _registry.json when found', async () => {
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const mockFs = makeMockFs(['/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.indicators.some((i) => i.includes('_registry.json'))).toBe(true);
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});
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it('includes "No project files found" indicator when nothing exists', async () => {
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const mockFs = makeMockFs([]);
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const detector = new ProjectFormatDetector(mockFs);
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const result = await detector.detect('/proj');
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expect(result.indicators.some((i) => i.toLowerCase().includes('no project files'))).toBe(true);
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});
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it('handles async filesystem.exists()', async () => {
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const asyncFs: DetectorFilesystem = {
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exists: async (p: string) => p.includes('nodegx.project.json') || p.includes('_registry.json'),
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join: (...parts: string[]) => parts.join('/')
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};
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const detector = new ProjectFormatDetector(asyncFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('v2');
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expect(result.confidence).toBe('high');
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});
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it('handles filesystem.exists() throwing (treats as not found)', async () => {
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const throwingFs: DetectorFilesystem = {
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exists: () => { throw new Error('permission denied'); },
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join: (...parts: string[]) => parts.join('/')
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};
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const detector = new ProjectFormatDetector(throwingFs);
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const result = await detector.detect('/proj');
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expect(result.format).toBe('unknown');
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});
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});
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// ---- detectSync() -----------------------------------------------------------
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describe('ProjectFormatDetector.detectSync()', () => {
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it('returns v2/high for v2 project', () => {
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const mockFs = makeMockFs(['/proj/nodegx.project.json', '/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = detector.detectSync('/proj');
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expect(result.format).toBe('v2');
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expect(result.confidence).toBe('high');
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});
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it('returns legacy/high for legacy project', () => {
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const mockFs = makeMockFs(['/proj/project.json']);
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const detector = new ProjectFormatDetector(mockFs);
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const result = detector.detectSync('/proj');
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expect(result.format).toBe('legacy');
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expect(result.confidence).toBe('high');
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});
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it('returns unknown for empty directory', () => {
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const mockFs = makeMockFs([]);
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const detector = new ProjectFormatDetector(mockFs);
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const result = detector.detectSync('/proj');
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expect(result.format).toBe('unknown');
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});
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it('throws when filesystem.exists() returns a Promise', () => {
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const asyncFs: DetectorFilesystem = {
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exists: async () => false,
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join: (...parts: string[]) => parts.join('/')
|
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};
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const detector = new ProjectFormatDetector(asyncFs);
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expect(() => detector.detectSync('/proj')).toThrow('synchronous');
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});
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});
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// ---- getFormat() / isV2() / isLegacy() --------------------------------------
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describe('ProjectFormatDetector convenience methods', () => {
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it('getFormat() returns "v2" for v2 project', async () => {
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const mockFs = makeMockFs(['/proj/nodegx.project.json', '/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
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expect(await detector.getFormat('/proj')).toBe('v2');
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});
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it('getFormat() returns "legacy" for legacy project', async () => {
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const mockFs = makeMockFs(['/proj/project.json']);
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const detector = new ProjectFormatDetector(mockFs);
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expect(await detector.getFormat('/proj')).toBe('legacy');
|
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});
|
||||
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it('getFormat() returns "unknown" for empty dir', async () => {
|
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const mockFs = makeMockFs([]);
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const detector = new ProjectFormatDetector(mockFs);
|
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expect(await detector.getFormat('/proj')).toBe('unknown');
|
||||
});
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||||
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||||
it('isV2() returns true for v2 project', async () => {
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const mockFs = makeMockFs(['/proj/nodegx.project.json', '/proj/components/_registry.json']);
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const detector = new ProjectFormatDetector(mockFs);
|
||||
expect(await detector.isV2('/proj')).toBe(true);
|
||||
});
|
||||
|
||||
it('isV2() returns false for legacy project', async () => {
|
||||
const mockFs = makeMockFs(['/proj/project.json']);
|
||||
const detector = new ProjectFormatDetector(mockFs);
|
||||
expect(await detector.isV2('/proj')).toBe(false);
|
||||
});
|
||||
|
||||
it('isLegacy() returns true for legacy project', async () => {
|
||||
const mockFs = makeMockFs(['/proj/project.json']);
|
||||
const detector = new ProjectFormatDetector(mockFs);
|
||||
expect(await detector.isLegacy('/proj')).toBe(true);
|
||||
});
|
||||
|
||||
it('isLegacy() returns false for v2 project', async () => {
|
||||
const mockFs = makeMockFs(['/proj/nodegx.project.json', '/proj/components/_registry.json']);
|
||||
const detector = new ProjectFormatDetector(mockFs);
|
||||
expect(await detector.isLegacy('/proj')).toBe(false);
|
||||
});
|
||||
});
|
||||
|
||||
// ---- V2_INDICATORS / LEGACY_INDICATORS constants ----------------------------
|
||||
|
||||
describe('Sentinel constants', () => {
|
||||
it('V2_INDICATORS.projectFile is nodegx.project.json', () => {
|
||||
expect(V2_INDICATORS.projectFile).toBe('nodegx.project.json');
|
||||
});
|
||||
|
||||
it('V2_INDICATORS.registryFile is components/_registry.json', () => {
|
||||
expect(V2_INDICATORS.registryFile).toBe('components/_registry.json');
|
||||
});
|
||||
|
||||
it('LEGACY_INDICATORS.projectFile is project.json', () => {
|
||||
expect(LEGACY_INDICATORS.projectFile).toBe('project.json');
|
||||
});
|
||||
});
|
||||
|
||||
// ---- createNodeDetector() integration test ----------------------------------
|
||||
|
||||
describe('createNodeDetector() integration', () => {
|
||||
let tmpDir: string;
|
||||
|
||||
beforeEach(() => {
|
||||
tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'noodl-format-test-'));
|
||||
});
|
||||
|
||||
afterEach(() => {
|
||||
fs.rmSync(tmpDir, { recursive: true, force: true });
|
||||
});
|
||||
|
||||
it('detects legacy project from real filesystem', async () => {
|
||||
fs.writeFileSync(path.join(tmpDir, 'project.json'), '{}');
|
||||
const detector = createNodeDetector();
|
||||
const result = await detector.detect(tmpDir);
|
||||
expect(result.format).toBe('legacy');
|
||||
expect(result.confidence).toBe('high');
|
||||
});
|
||||
|
||||
it('detects v2 project from real filesystem', async () => {
|
||||
fs.writeFileSync(path.join(tmpDir, 'nodegx.project.json'), '{}');
|
||||
fs.mkdirSync(path.join(tmpDir, 'components'));
|
||||
fs.writeFileSync(path.join(tmpDir, 'components', '_registry.json'), '{}');
|
||||
const detector = createNodeDetector();
|
||||
const result = await detector.detect(tmpDir);
|
||||
expect(result.format).toBe('v2');
|
||||
expect(result.confidence).toBe('high');
|
||||
});
|
||||
|
||||
it('detects unknown for empty directory', async () => {
|
||||
const detector = createNodeDetector();
|
||||
const result = await detector.detect(tmpDir);
|
||||
expect(result.format).toBe('unknown');
|
||||
});
|
||||
|
||||
it('detectSync works on real filesystem', () => {
|
||||
fs.writeFileSync(path.join(tmpDir, 'project.json'), '{}');
|
||||
const detector = createNodeDetector();
|
||||
const result = detector.detectSync(tmpDir);
|
||||
expect(result.format).toBe('legacy');
|
||||
});
|
||||
});
|
||||
@@ -1,2 +1,3 @@
|
||||
export * from './ProjectExporter.test';
|
||||
export * from './ProjectImporter.test';
|
||||
export * from './ProjectFormatDetector.test';
|
||||
|
||||
Reference in New Issue
Block a user