# Xcode Test Analysis

> Analyzes xcresult bundles to provide insights on test failures, slow tests, and potentially flaky tests. Use when user asks about test results, test failures, slow tests, or test coverage.

- Skill: `tomevault-io/xcode-test-analysis` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/xcode-test-analysis`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/xcode-test-analysis/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/xcode-test-analysis

---


# Xcode Test Analysis

Parses `.xcresult` bundles to provide detailed test insights.

## When to Use

- User asks "why did my tests fail?"
- User wants to identify slow tests
- User suspects flaky tests
- User wants test coverage information

## Usage

```bash
swift ~/.claude/plugins/xcode-dx-skills/skills/xcode-test-analysis/scripts/parse-xcresult.swift /path/to/Test.xcresult
```

Or invoke directly:

```
/xcode-test-analysis path/to/Test.xcresult
```

## Finding xcresult Bundles

xcresult bundles are typically located at:

```
~/Library/Developer/Xcode/DerivedData/<project>/Logs/Test/
```

Or run tests with explicit result bundle path:

```bash
xcodebuild test -scheme MyApp -resultBundlePath ./TestResults.xcresult
```

## What Gets Analyzed

| Metric | Description |
|--------|-------------|
| **Failed tests** | Test names, failure messages, file/line |
| **Slow tests** | Tests exceeding duration threshold |
| **Test duration** | Timing for each test case |
| **Flaky candidates** | Tests with inconsistent results (if multiple runs available) |
| **Coverage** | Code coverage percentage (if enabled) |

## Output Format

The script outputs JSON with:
- `summary`: Pass/fail counts, total duration
- `failures`: Detailed failure information with messages
- `slow_tests`: Tests sorted by duration
- `by_suite`: Results grouped by test suite
- `coverage`: Coverage data if available

---
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<!-- tomevault:4.0:skill_md:2026-04-16 -->