This skill should be used when working with Verify snapshot tests in .NET projects. Use when updating verified snapshots after intentional code changes, accepting new snapshots, discovering verify tests, or troubleshooting snapshot mismatches. Trigger phrases include "verify tests", "update snapshots", "accept snapshots", "verified files", ".verified.txt".
Installs into .claude/skills of the current project.
Are you the author of Dotnet Verify?
Add the live security badge to your README. It updates with every re-scan.
[](https://www.skillsdirectory.com/skills/nikiforovall-dotnet-verify)
---
name: dotnet-verify
description: This skill should be used when working with Verify snapshot tests in .NET projects. Use when updating verified snapshots after intentional code changes, accepting new snapshots, discovering verify tests, or troubleshooting snapshot mismatches. Trigger phrases include "verify tests", "update snapshots", "accept snapshots", "verified files", ".verified.txt".
---
# .NET Verify Snapshot Testing
Manage [Verify](https://github.com/VerifyTests/Verify) snapshot tests using the `verify.tool` dotnet local tool.
## Discovery
To list all test files using Verify snapshots:
```bash
rg -l "Verifier\.Verify|UsesVerify|\.verified\." --type cs
```
To scope to a specific directory:
```bash
rg -l "Verifier\.Verify|UsesVerify|\.verified\." --type cs <path/to/test/directory>
```
## Update Snapshots
To update snapshots after intentional code changes:
1. Build the solution:
```bash
dotnet build -p:WarningLevel=0 /clp:ErrorsOnly --verbosity minimal
```
2. Run affected verify tests (they fail, generating `.received.` files):
```bash
dotnet test <test-project> --no-build --filter "FullyQualifiedName~<TestClass>" -v m
```
3. Accept all new snapshots:
```bash
dotnet verify accept -y
```
To scope to a specific directory:
```bash
dotnet verify accept -y -w <path/to/test/directory>
```
4. Re-run tests to confirm they pass:
```bash
dotnet test <test-project> --no-build --filter "FullyQualifiedName~<TestClass>" -v m
```
## File Conventions
- `ClassName.MethodName.verified.txt` — accepted snapshot (committed to git)
- `ClassName.MethodName.received.txt` — latest test output (not committed, gitignored)
- Parameterized tests: `ClassName.MethodName_param=value.verified.txt`
## Quick Reference
| Command | Purpose |
|---|---|
| `dotnet verify accept -y` | Accept all pending snapshots |
| `dotnet verify accept -y -w <dir>` | Accept snapshots in specific directory |
| `rg -l "Verifier\.Verify\|UsesVerify\|\.verified\." --type cs` | List all test files using Verify |
