Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/marcelorodrigo/agent-skills/spring-boot-testingnpx skills add marcelorodrigo/agent-skills --skill spring-boot-testinggit clone --depth 1 https://github.com/marcelorodrigo/agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/marcelorodrigo/agent-skills/spring-boot-testing)<a href="https://agentmods.dev/skills/marcelorodrigo/agent-skills/spring-boot-testing"><img src="https://agentmods.dev/badge/skills/marcelorodrigo/agent-skills/spring-boot-testing.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00032 | $0.01554 |
| Opus 5 | $0.00016 | $0.00777 |
| Sonnet 5 | $0.00006 | $0.00311 |
| Haiku 4.5 | $0.00003 | $0.00155 |
Grade A, and why
spring-boot-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Spring Boot Testing
Expert guide for testing Spring Boot 4 applications with modern patterns and best practices.
Core Principles
- Test Pyramid: Unit (fast) > Slice (focused) > Integration (complete)
- Right Tool: Use the narrowest slice that gives you confidence
- AssertJ Style: Fluent, readable assertions over verbose matchers
- Modern APIs: Prefer MockMvcTester and RestTestClient over legacy alternatives
Which Test Slice?
| Scenario | Annotation | Reference |
|---|---|---|
| Controller + HTTP semantics | @WebMvcTest |
references/webmvctest.md |
| Repository + JPA queries | @DataJpaTest |
references/datajpatest.md |
| REST client + external APIs | @RestClientTest |
references/restclienttest.md |
| JSON (de)serialization | @JsonTest |
See references/test-slices-overview.md |
| Full application | @SpringBootTest |
See references/test-slices-overview.md |
Test Slices Reference
- references/test-slices-overview.md - Decision matrix and comparison
- references/webmvctest.md - Web layer with MockMvc
- references/datajpatest.md - Data layer with Testcontainers
- references/restclienttest.md - REST client testing
Testing Tools Reference
- references/mockmvc-tester.md - AssertJ-style MockMvc (3.2+)
- references/mockmvc-classic.md - Traditional MockMvc (pre-3.2)
- references/resttestclient.md - Spring Boot 4+ REST client
- references/mockitobean.md - Mocking dependencies
Assertion Libraries
- references/assertj-basics.md - Scalars, strings, booleans, dates
- references/assertj-collections.md - Lists, Sets, Maps, arrays
What ships with it
14 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/assertj-basics.md 4.3 KB
- references/assertj-collections.md 4.9 KB
- references/context-caching.md 2.4 KB
- references/datajpatest.md 4.8 KB
- references/instancio.md 4.8 KB
- references/mockitobean.md 4.5 KB
- references/mockmvc-classic.md 5.8 KB
- references/mockmvc-tester.md 7.5 KB
- references/restclienttest.md 4.6 KB
- references/resttestclient.md 4.9 KB
- references/sb4-migration.md 3.3 KB
- references/test-slices-overview.md 5.4 KB
- references/testcontainers-jdbc.md 5.3 KB
- references/webmvctest.md 3.6 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 193 lines · 32 tokens per session scan A 8c542cf2956f
spring-boot-testing is a skill published in the GitHub repository marcelorodrigo/agent-skills (18 stars, last pushed 2d ago), licensed MIT. It adds 32 tokens to every session and 1,554 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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