Agent skill

Spring Boot Testing

by HoangNguyen0403 in HoangNguyen0403/agent-skills-standard

Write unit, integration, and slice tests for Spring Boot 3 applications.

MITAuto-check passedBackend & APIs

Install Spring Boot Testing

skills CLI
$ npx skills add HoangNguyen0403/agent-skills-standard --skill spring-boot-testing -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install HoangNguyen0403/agent-skills-standard spring-boot-testing --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/spring-boot/spring-boot-testing .claude/skills/spring-boot-testing && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
spring-boot-testing
GitHub stars
572
Token cost
~819 tokens
SKILL.md length
343 words
Files
4 (incl. references)
Skills in repo
211
Repo updated
First seen
Licence
MIT

At a glance

Write unit, integration, and slice tests for Spring Boot 3 applications.

  • Works in 4 steps: Red: Write failing test (e.g., returns… → Green: Implement minimal code to pass. → Refactor: Clean up while keeping tests… → …
  • Writing unit tests
  • SKILL.md covers Priority: P0 (CRITICAL), Core Rule Anchors, Follow TDD Workflow and Write Slice and Integration…, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spring Boot Testing is an agent skill from HoangNguyen0403/agent-skills-standard. Write unit, integration, and slice tests for Spring Boot 3 applications. Use when writing unit tests, integration tests, or slice tests for Spring Boot 3 applications.

Its SKILL.md is about 820 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `evals/evals.json`, `references/implementation.md` and `references/testing-template.md`).

It sits in Backend & APIs, covering Backend development and Integration testing. It works with Spring Boot. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.

When your agent uses it

  • Writing unit tests
  • Integration tests
  • Slice tests for Spring Boot 3 applications

Example prompts

  • “/spring-boot-testing”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Red: Write failing test (e.g., returns 404) ([BE-TEST-05]).
  2. Green: Implement minimal code to pass.
  3. Refactor: Clean up while keeping tests green ([BE-TEST-01]).
  4. Coverage: Diagnostic and project-configured; verify risk-weighted critical paths rather than padding code for an arbitrary percentage.

What it can do on your machine

Read from SKILL.md and the folder at commit b529c2d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Spring Boot Testing loads about 819 tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 47 tokens; SKILL.md has 343 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~819
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 343 words, ~819 tokens.

Download SKILL.mdSave it as .claude/skills/spring-boot-testing/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
spring-boot-testing
description
Write unit, integration, and slice tests for Spring Boot 3 applications. Use when writing unit tests, integration tests, or slice tests for Spring Boot 3 applications.

Spring Boot Testing Standards

Priority: P0 (CRITICAL)

Core Rule Anchors

  • [BE-TEST-01] Parameterized Tests for Equivalent Cases: Prefer @ParameterizedTest (@CsvSource, @MethodSource) when methods have multiple equivalent inputs or boundary permutations. Distinct scenarios may stay separate test methods. Reviewers must not demand parameterized rewrites without a behavioral gap.
  • [BE-TEST-02] Ban on Brittle DB Mock String Matching: Do not use string-matching mocks for raw SQL queries. Test pure domain calculations directly, or use Testcontainers for database repository verification.
  • [BE-TEST-03] Ban on Shallow Assertions: Never assert only assertThat(result).isNotNull() without inspecting domain fields, status codes, and invariants.
  • [BE-TEST-04] Ban on Pass-Through Interface Mocks: Repositories and service handlers must test contract compliance and error mapping. Ban 1:1 pass-through mock echoing without contract assertions.
  • [BE-TEST-05] Bug-First Regression Lock: Every PR fixing a bug ticket or with title fix(...) must introduce a test reproducing the defect prior to the fix.

Follow TDD Workflow

  1. Red: Write failing test (e.g., returns 404) ([BE-TEST-05]).
  2. Green: Implement minimal code to pass.
  3. Refactor: Clean up while keeping tests green ([BE-TEST-01]).
  4. Coverage: Diagnostic and project-configured; verify risk-weighted critical paths rather than padding code for an arbitrary percentage.

Write Slice and Integration Tests

  • Real Infrastructure ([BE-TEST-02]): Use Testcontainers for DB/Queues. Avoid H2/Embedded.
  • Assertions ([BE-TEST-03]): Use AssertJ (assertThat) over JUnit assertions; avoid shallow checks.
  • Isolation ([BE-TEST-04]): Use @MockBean for downstream dependencies in Slice Tests; avoid pass-through mock echoing.

See implementation examples for WebMvcTest slice tests and Testcontainers integration tests.

Anti-Patterns

  • [BE-TEST-01] Stylistic parameterized rewrites: Do not demand parameterized refactoring of passing tests without a behavioral gap.
  • [BE-TEST-02] Brittle DB mock string matching: Do not match raw SQL strings in mocks; use Testcontainers.
  • [BE-TEST-03] Shallow assertions: Never assert only assertThat(result).isNotNull() without inspecting domain fields or status codes.
  • [BE-TEST-04] Pass-through mock echoing: Ban 1:1 pass-through mock echoing without contract assertions.
  • [BE-TEST-05] Bug fix without reproduction test: Ban bug fixes without a regression test.
  • No Dirty Contexts: Avoid @MockBean in base classes; it reloads context per test.
  • No network I/O in tests: Mock external calls with WireMock.
  • No System.out in tests: Use AssertJ assertions instead.

References

© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in skills/spring-boot/spring-boot-testing of HoangNguyen0403/agent-skills-standard.

  • SKILL.md
  • evals/evals.json
  • references/implementation.md
  • references/testing-template.md

Open the folder on GitHubat commit b529c2d

Compare with similar skills

Spring Boot Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Spring Boot Testing compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Spring Boot Testing this skillHoangNguyen0403/agent-skills-standard572—~819Automated safety check: PassMIT
323 Frameworks Spring Boot Testing Acceptance Testsjabrena/plinth447—~1.2kAutomated safety check: PassApache-2.0
Spring Boot Test Patternsgiuseppe-trisciuoglio/developer-kit357—~2.3kAutomated safety check: NotesMIT
Springboot Verificationxu-xiang/everything-claude-code-zh2k—~1.3kAutomated safety check: PassMIT
Springboot Verificationaffaan-m/ECC277k5 repos~1.5kAutomated safety check: PassMIT
Springboot TDDaffaan-m/ECC277k3 repos~813Automated safety check: PassMIT

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Works with

Questions about Spring Boot Testing

What does Spring Boot Testing do?

Write unit, integration, and slice tests for Spring Boot 3 applications. Spring Boot Testing is an agent skill from HoangNguyen0403/agent-skills-standard. Write unit, integration, and slice tests for Spring Boot 3 applications.

When should I use Spring Boot Testing?

Spring Boot Testing fits situations like: writing unit tests; integration tests; slice tests for Spring Boot 3 applications.

How do I install Spring Boot Testing in Claude Code?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill spring-boot-testing -a claude-code`. Or copy the skill folder (skills/spring-boot/spring-boot-testing in HoangNguyen0403/agent-skills-standard) into .claude/skills/spring-boot-testing in your project. Claude Code loads it when a task matches its description.

How do I install Spring Boot Testing in Codex?

Run `npx skills add HoangNguyen0403/agent-skills-standard --skill spring-boot-testing -a codex`. Or copy the skill folder (skills/spring-boot/spring-boot-testing in HoangNguyen0403/agent-skills-standard) into .agents/skills/spring-boot-testing in your project. Codex loads it when a task matches its description.

Can I use Spring Boot Testing in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HoangNguyen0403/agent-skills-standard --skill spring-boot-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spring-boot-testing, .gemini/skills/spring-boot-testing, .github/skills/spring-boot-testing and .opencode/skills/spring-boot-testing in your project.

What does Spring Boot Testing need to run?

SKILL.md names no scripts, command-line tools or credentials: Spring Boot Testing is instructions for the agent only.

Does Spring Boot Testing access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Spring Boot Testing safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Spring Boot Testing use?

Spring Boot Testing is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Spring Boot Testing use?

About 819 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.1k tokens, read only when the agent opens those files.

What are the alternatives to Spring Boot Testing?

Skills that share tags, products or a category with Spring Boot Testing: 323 Frameworks Spring Boot Testing Acceptance Tests (jabrena/plinth, 447 stars), Spring Boot Test Patterns (giuseppe-trisciuoglio/developer-kit, 357 stars), Springboot Verification (xu-xiang/everything-claude-code-zh, 2k stars) and Springboot Verification (affaan-m/ECC, 277k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spring Boot Testing?

HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.

Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.