Merge pull request #466 from thejesh23/fix/understandignore-multi-language-test-patterns

feat(core): broaden .understandignore starter for C#/Java/Go test patterns
This commit is contained in:
Yuxiang Lin
2026-06-18 11:02:13 +08:00
committed by GitHub
Unverified
4 changed files with 261 additions and 51 deletions
@@ -95,6 +95,106 @@ describe("generateStarterIgnoreFile", () => {
expect(content).not.toContain("# fixtures/");
});
describe("multi-language test directory detection", () => {
it("suggests PascalCase Tests/ via case-insensitive match", () => {
mkdirSync(join(testDir, "Tests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
// On-disk casing is preserved in the suggestion.
expect(content).toContain("# Tests/");
});
it("suggests UnitTests/ via case-insensitive match", () => {
mkdirSync(join(testDir, "UnitTests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# UnitTests/");
});
it("suggests IntegrationTests/ via case-insensitive match", () => {
mkdirSync(join(testDir, "IntegrationTests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# IntegrationTests/");
});
it("suggests C# project-suffix .Tests/ directories", () => {
mkdirSync(join(testDir, "MyApp.Tests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# MyApp.Tests/");
});
it("suggests C# project-suffix .UnitTests/ directories", () => {
mkdirSync(join(testDir, "MyApp.UnitTests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# MyApp.UnitTests/");
});
it("suggests C# project-suffix .IntegrationTests/ directories", () => {
mkdirSync(join(testDir, "MyApp.IntegrationTests"), { recursive: true });
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# MyApp.IntegrationTests/");
});
it("ignores files that happen to share a detected name", () => {
writeFileSync(join(testDir, "tests"), "not a directory");
const content = generateStarterIgnoreFile(testDir);
expect(content).not.toContain("# tests/");
});
});
describe("language-grouped test file patterns", () => {
it("includes C# / .NET test file patterns", () => {
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# C# / .NET");
expect(content).toContain("# **/*Tests.cs");
expect(content).toContain("# **/*Test.cs");
expect(content).toContain("# **/*Fixture.cs");
expect(content).toContain("# **/*.Tests.csproj");
});
it("includes Java / Kotlin test file patterns", () => {
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# Java / Kotlin");
expect(content).toContain("# **/*Test.java");
expect(content).toContain("# **/*IT.java");
expect(content).toContain("# **/*Spec.kt");
expect(content).toContain("# **/src/test/**");
});
it("includes Go test file patterns", () => {
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# Go");
expect(content).toContain("# **/*_test.go");
});
it("groups patterns under the JS / TS sub-header", () => {
const content = generateStarterIgnoreFile(testDir);
expect(content).toContain("# JS / TS");
});
it("emits language groups in stable order: JS, C#, Java, Go", () => {
const content = generateStarterIgnoreFile(testDir);
const jsIdx = content.indexOf("# JS / TS");
const csIdx = content.indexOf("# C# / .NET");
const javaIdx = content.indexOf("# Java / Kotlin");
const goIdx = content.indexOf("# Go");
expect(jsIdx).toBeGreaterThan(-1);
expect(csIdx).toBeGreaterThan(jsIdx);
expect(javaIdx).toBeGreaterThan(csIdx);
expect(goIdx).toBeGreaterThan(javaIdx);
});
it("keeps all suggestions commented even with no detected dirs and no .gitignore", () => {
const content = generateStarterIgnoreFile(testDir);
const uncommented = content.split("\n").filter((l) => l.trim() && !l.startsWith("#"));
expect(uncommented).toHaveLength(0);
});
it("ignores a file whose name would match a suffix-glob", () => {
writeFileSync(join(testDir, "MyApp.Tests"), "not a directory");
const content = generateStarterIgnoreFile(testDir);
expect(content).not.toContain("# MyApp.Tests/");
});
});
describe(".gitignore integration", () => {
it("includes .gitignore patterns not covered by defaults", () => {
writeFileSync(join(testDir, ".gitignore"), ".env\nsecrets/\n*.pyc\n");
@@ -1,4 +1,4 @@
import { existsSync, readFileSync } from "node:fs";
import { existsSync, readdirSync, readFileSync, type Dirent } from "node:fs";
import { join } from "node:path";
import { DEFAULT_IGNORE_PATTERNS } from "./ignore-filter.js";
@@ -12,23 +12,65 @@ const HEADER = `# .understandignore — patterns for files/dirs to exclude from
#
`;
const DETECTABLE_DIRS = [
{ dir: "__tests__", pattern: "__tests__/" },
{ dir: "test", pattern: "test/" },
{ dir: "tests", pattern: "tests/" },
{ dir: "fixtures", pattern: "fixtures/" },
{ dir: "testdata", pattern: "testdata/" },
{ dir: "docs", pattern: "docs/" },
{ dir: "examples", pattern: "examples/" },
{ dir: "scripts", pattern: "scripts/" },
{ dir: "migrations", pattern: "migrations/" },
{ dir: ".storybook", pattern: ".storybook/" },
// Directory names matched case-insensitively against the on-disk entry name.
// Mixes ecosystem conventions: __tests__ (JS), test/tests (multi), testdata
// (Go), .storybook (JS), and PascalCase variants (UnitTests/IntegrationTests)
// commonly seen in C#/.NET projects.
const EXACT_DIR_NAMES = [
"__tests__",
"test",
"tests",
"fixtures",
"testdata",
"docs",
"examples",
"scripts",
"migrations",
".storybook",
"unittests",
"integrationtests",
];
const GENERIC_SUGGESTIONS = [
"*.test.*",
"*.spec.*",
"*.snap",
// Directory-name suffixes matched case-insensitively via String.endsWith.
// Primarily intended for C# / .NET project-suffix conventions like Foo.Tests,
// Foo.UnitTests, Foo.IntegrationTests, but note the match is unanchored —
// e.g. a hypothetical `.storybook.tests` would also match. Suggestions stay
// commented-out so the user reviews before activating.
const SUFFIX_DIR_GLOBS = [
".tests",
".unittests",
".integrationtests",
];
// Test file patterns grouped by language. Emitted as commented suggestions
// with a sub-header per group.
const TEST_PATTERN_GROUPS: Array<{ label: string; patterns: string[] }> = [
{
label: "JS / TS",
patterns: ["*.test.*", "*.spec.*", "*.snap"],
},
{
label: "C# / .NET",
patterns: [
"**/*Tests.cs",
"**/*Test.cs",
"**/*Fixture.cs",
"**/*.Tests.csproj",
],
},
{
label: "Java / Kotlin",
patterns: [
"**/src/test/**",
"**/*Test.java",
"**/*IT.java",
"**/*Spec.kt",
],
},
{
label: "Go",
patterns: ["**/*_test.go"],
},
];
/**
@@ -53,6 +95,33 @@ function isCoveredByDefaults(pattern: string): boolean {
return DEFAULT_IGNORE_PATTERNS.some((d) => normalize(d) === normalized);
}
/**
* Detects directories under projectRoot that match either an exact name
* (case-insensitive) in EXACT_DIR_NAMES or end with one of SUFFIX_DIR_GLOBS.
* Returns patterns using the directory's actual on-disk casing.
*/
function detectDirectories(projectRoot: string): string[] {
let entries: Dirent[];
try {
entries = readdirSync(projectRoot, { withFileTypes: true, encoding: "utf-8" });
} catch {
return [];
}
const matches: string[] = [];
for (const entry of entries) {
if (!entry.isDirectory()) continue;
const lower = entry.name.toLowerCase();
if (EXACT_DIR_NAMES.includes(lower)) {
matches.push(`${entry.name}/`);
continue;
}
if (SUFFIX_DIR_GLOBS.some((suffix) => lower.endsWith(suffix))) {
matches.push(`${entry.name}/`);
}
}
return matches;
}
/**
* Generates a starter .understandignore file content by scanning the project
* for common directories and reading .gitignore patterns.
@@ -75,14 +144,8 @@ export function generateStarterIgnoreFile(projectRoot: string): string {
sections.push("");
}
// Section 2: detected directories
const detected: string[] = [];
for (const { dir, pattern } of DETECTABLE_DIRS) {
if (existsSync(join(projectRoot, dir))) {
detected.push(pattern);
}
}
// Section 2: detected directories (case-insensitive + suffix-glob)
const detected = detectDirectories(projectRoot);
if (detected.length > 0) {
sections.push("# --- Detected directories (uncomment to exclude) ---\n");
for (const pattern of detected) {
@@ -91,10 +154,13 @@ export function generateStarterIgnoreFile(projectRoot: string): string {
sections.push("");
}
// Section 3: generic test patterns
// Section 3: test file patterns, grouped by language
sections.push("# --- Test file patterns (uncomment to exclude) ---\n");
for (const pattern of GENERIC_SUGGESTIONS) {
sections.push(`# ${pattern}`);
for (const group of TEST_PATTERN_GROUPS) {
sections.push(`# ${group.label}`);
for (const pattern of group.patterns) {
sections.push(`# ${pattern}`);
}
}
sections.push("");
@@ -200,31 +200,9 @@ Determine whether to run a full analysis or incremental update.
Set up and verify the `.understandignore` file before scanning.
1. Check if `$PROJECT_ROOT/.understand-anything/.understandignore` exists.
2. **If it does NOT exist**, generate a starter file:
- Run the following Node.js one-liner in `$PROJECT_ROOT` (reads `.gitignore` and deduplicates against built-in defaults):
2. **If it does NOT exist**, generate a starter file by invoking the bundled script (delegates to `generateStarterIgnoreFile` in `@understand-anything/core`, which reads `.gitignore`, deduplicates against built-in defaults, and emits language-grouped test-file suggestions). Pass `$PLUGIN_ROOT` via the env so the script doesn't have to re-derive it from its own path (which breaks for copied skill installs):
```bash
node -e "
const fs = require('fs');
const path = require('path');
const root = process.cwd();
const defaults = ['node_modules/','node_modules','.git/','vendor/','venv/','.venv/','__pycache__/','dist/','dist','build/','build','out/','coverage/','coverage','.next/','.cache/','.turbo/','target/','obj/','*.lock','package-lock.json','yarn.lock','pnpm-lock.yaml','*.png','*.jpg','*.jpeg','*.gif','*.svg','*.ico','*.woff','*.woff2','*.ttf','*.eot','*.mp3','*.mp4','*.pdf','*.zip','*.tar','*.gz','*.min.js','*.min.css','*.map','*.generated.*','.idea/','.vscode/','LICENSE','.gitignore','.editorconfig','.prettierrc','.eslintrc*','*.log'];
const norm = p => p.replace(/\/+$/, '');
const defaultSet = new Set(defaults.map(norm));
const header = '# .understandignore — patterns for files/dirs to exclude from analysis\n# Syntax: same as .gitignore (globs, # comments, ! negation, trailing / for dirs)\n# Lines below are suggestions — uncomment to activate.\n# Use ! prefix to force-include something excluded by defaults.\n#\n# Built-in defaults (always excluded unless negated):\n# node_modules/, .git/, dist/, build/, obj/, *.lock, *.min.js, etc.\n#\n';
let body = '';
const gitignorePath = path.join(root, '.gitignore');
if (fs.existsSync(gitignorePath)) {
const gi = fs.readFileSync(gitignorePath, 'utf-8').split('\n').map(l => l.trim()).filter(l => l && !l.startsWith('#')).filter(p => !defaultSet.has(norm(p)));
if (gi.length) { body += '# --- From .gitignore (uncomment to exclude) ---\n\n' + gi.map(p => '# ' + p).join('\n') + '\n\n'; }
}
const dirs = ['__tests__','test','tests','fixtures','testdata','docs','examples','scripts','migrations','.storybook'];
const found = dirs.filter(d => fs.existsSync(path.join(root, d)));
if (found.length) { body += '# --- Detected directories (uncomment to exclude) ---\n\n' + found.map(d => '# ' + d + '/').join('\n') + '\n\n'; }
body += '# --- Test file patterns (uncomment to exclude) ---\n\n# *.test.*\n# *.spec.*\n# *.snap\n';
const outDir = path.join(root, '.understand-anything');
if (!fs.existsSync(outDir)) fs.mkdirSync(outDir, { recursive: true });
fs.writeFileSync(path.join(outDir, '.understandignore'), header + body);
"
PLUGIN_ROOT="$PLUGIN_ROOT" node <SKILL_DIR>/generate-ignore.mjs $PROJECT_ROOT
```
- Report to the user:
> Generated `.understand-anything/.understandignore` with suggested exclusions based on your project structure. Please review it and uncomment any patterns you'd like to exclude from analysis. When ready, confirm to continue.
@@ -0,0 +1,66 @@
#!/usr/bin/env node
/**
* generate-ignore.mjs
*
* Writes a starter `.understand-anything/.understandignore` for the target
* project by delegating to `generateStarterIgnoreFile` in
* `@understand-anything/core`. Invoked from SKILL.md Phase 0.5; replaces the
* inline `node -e "…"` block that previously duplicated the generator logic.
*
* Usage:
* node generate-ignore.mjs <projectRoot>
*
* Behaviour:
* - Exits 0 with a stderr notice if the target file already exists.
* - Creates `<projectRoot>/.understand-anything/` if missing.
* - Emits a one-line stderr summary on success.
*
* Mirrors the @understand-anything/core resolution dance used by
* scan-project.mjs: workspace-linked package first, plugin-cache dist fallback.
*
* Plugin root resolution: prefer $PLUGIN_ROOT from the environment (set by
* SKILL.md Phase 0 via its multi-candidate search) over the
* `resolve(__dirname, '../..')` heuristic. The relative path breaks when
* `skills/understand/` is copied into a runtime skills directory whose
* parent is not the plugin checkout.
*/
import { createRequire } from 'node:module';
import { dirname, join, resolve } from 'node:path';
import { fileURLToPath, pathToFileURL } from 'node:url';
import { existsSync, mkdirSync, writeFileSync } from 'node:fs';
const __dirname = dirname(fileURLToPath(import.meta.url));
function resolvePluginRoot() {
const envRoot = process.env.PLUGIN_ROOT;
if (envRoot && existsSync(join(envRoot, 'package.json'))) {
return envRoot;
}
return resolve(__dirname, '../..');
}
const pluginRoot = resolvePluginRoot();
const require = createRequire(resolve(pluginRoot, 'package.json'));
let core;
try {
core = await import(pathToFileURL(require.resolve('@understand-anything/core')).href);
} catch {
core = await import(pathToFileURL(resolve(pluginRoot, 'packages/core/dist/index.js')).href);
}
const { generateStarterIgnoreFile } = core;
const projectRoot = resolve(process.argv[2] ?? process.cwd());
const outDir = join(projectRoot, '.understand-anything');
const outPath = join(outDir, '.understandignore');
if (existsSync(outPath)) {
console.error(`generate-ignore: ${outPath} already exists — skipping`);
process.exit(0);
}
if (!existsSync(outDir)) mkdirSync(outDir, { recursive: true });
writeFileSync(outPath, generateStarterIgnoreFile(projectRoot));
console.error(`generate-ignore: wrote ${outPath}`);