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chore: Update build configuration for Scoverage and ScalaTest integration

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This commit is contained in:
Janis
2026-03-22 14:19:44 +01:00
parent 186db062c1
commit 5a21e57ca9
7 changed files with 47 additions and 174 deletions
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.claude/agents/test-writer.md
+1 -1
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@@ -9,7 +9,7 @@ You do not have permissions to modify the source code, just write tests.
You write tests for Scala 3 + Quarkus services.
## Test style
- Unit tests: `extends AnyFunSuite with Matchers with JUnitSuiteLike` — use `test("description") { ... }` DSL, no `@Test` annotation, no `: Unit` return type needed.
- Unit tests: `extends AnyFunSuite with Matchers` — use `test("description") { ... }` DSL, no `@Test` annotation, no `: Unit` return type needed.
- Integration tests: `@QuarkusTest` with JUnit 5 — `@Test` methods MUST be explicitly typed `: Unit`.
Target 95%+ conditional coverage.
.claude/skills/contract-first-test-writing/SKILL.md
-127
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@@ -1,127 +0,0 @@
---
name: contract-first-test-writing
description: Use when the architect has produced an OpenAPI contract but scala-implementer has not yet written any source code - write failing tests from the contract so implementation has a target to satisfy
---
# Contract-First Test Writing (TDD Red Phase)
## Overview
Write tests from the API contract **before** any implementation exists. Tests will fail — that is correct and expected. The scala-implementer's job is to make them green.
**Iron Law:** Never look at `src/main/scala`. If it exists, ignore it. Derive every assertion from `docs/api/{service}.yaml` and the relevant ADR in `docs/adr/`.
## Workflow
### 1. Read the contract
```
docs/api/{service-name}.yaml ← OpenAPI spec (required)
docs/adr/ ← ADRs for domain rules and data shapes
```
Extract for each endpoint:
- HTTP method + path
- Request body shape and required fields
- Response status codes and body shape
- Error cases (4xx, 5xx) documented in the spec
### 2. Write `@QuarkusTest` integration tests (one per endpoint)
Cover for every endpoint:
| Scenario | What to assert |
|----------|---------------|
| Happy path | Correct 2xx status + response body shape |
| Missing required field | 400 response |
| Invalid input | 400 or 422 response |
| Not found | 404 response (where applicable) |
| Error contract | Response body matches error schema |
```scala
import io.quarkus.test.junit.QuarkusTest
import io.restassured.RestAssured.given
import org.junit.jupiter.api.Test
import jakarta.ws.rs.core.MediaType
@QuarkusTest
class MoveEndpointTest:
@Test
def validMove_returns200(): Unit =
given()
.contentType(MediaType.APPLICATION_JSON)
.body("""{"from":"e2","to":"e4"}""")
.when()
.post("/api/moves")
.`then`()
.statusCode(200)
@Test
def missingField_returns400(): Unit =
given()
.contentType(MediaType.APPLICATION_JSON)
.body("""{"from":"e2"}""")
.when()
.post("/api/moves")
.`then`()
.statusCode(400)
```
### 3. Write unit tests for domain rules
For every domain invariant described in the ADR (validation rules, state machines, error conditions), write a ScalaTest unit test:
```scala
import org.scalatest.funsuite.AnyFunSuite
import org.scalatest.matchers.should.Matchers
import org.scalatestplus.junit.JUnitSuiteLike
class MoveValidatorTest extends AnyFunSuite with Matchers with JUnitSuiteLike:
test("invalid square is rejected") {
val result = MoveValidator.validate("z9", "e4")
assert(result.isLeft)
}
```
### 4. Confirm tests compile but fail
```bash
./gradlew :modules:{service-name}:test
```
Expected outcome: **compilation succeeds, tests fail** (no implementation yet).
If compilation fails, fix the test code — do not create implementation code.
If tests somehow pass, the contract is already implemented; notify the team-lead.
### 5. Hand off to scala-implementer
Leave a comment at the top of the primary test file:
```scala
// RED: These tests define the contract for {service-name}.
// scala-implementer: make them green without modifying test assertions.
```
## Rules
- **No peeking at `src/main/scala`** — tests must be derived from the contract only.
- Use `@QuarkusTest` + REST Assured for HTTP endpoints — `@Test` methods must be explicitly typed `: Unit`.
- Use `AnyFunSuite with Matchers with JUnitSuiteLike` for pure domain logic unit tests — no `@Test`, no `: Unit` needed.
- Do not mock the implementation — tests call real endpoints, real domain code.
- Do not write happy-path-only tests; every documented error case needs a test.
## After Implementation: Coverage Check
Once scala-implementer is done and tests are green, run the coverage reporter to find any gaps the contract tests missed:
```bash
python3 jacoco-reporter/jacoco_coverage_gaps.py \
modules/{service-name}/build/reports/jacoco/test/jacocoTestReport.xml \
--output agent
```
Use the `jacoco-coverage-gaps` skill to close remaining gaps.
.gitignore
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@@ -41,3 +41,5 @@ bin/
### Mac OS ###
.DS_Store
/jacoco-reporter/.venv/
/.claude/settings.local.json
.idea/scala_compiler.xml
Generated
+2 -2
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@@ -1,11 +1,11 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ScalaCompilerConfiguration">
<profile name="Gradle 1" modules="NowChessSystems.modules.api.main,NowChessSystems.modules.api.test">
<profile name="Gradle 1" modules="NowChessSystems.modules.api.main,NowChessSystems.modules.api.scoverage,NowChessSystems.modules.api.test">
<option name="deprecationWarnings" value="true" />
<option name="uncheckedWarnings" value="true" />
</profile>
<profile name="Gradle 2" modules="NowChessSystems.modules.core.main,NowChessSystems.modules.core.test">
<profile name="Gradle 2" modules="NowChessSystems.modules.core.main,NowChessSystems.modules.core.scoverage,NowChessSystems.modules.core.test">
<option name="deprecationWarnings" value="true" />
<option name="uncheckedWarnings" value="true" />
<parameters>
build.gradle.kts
+2 -1
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@@ -6,7 +6,8 @@ val versions = mapOf(
"SCALA3" to "3.5.1",
"SCALA_LIBRARY" to "2.13.18",
"SCALATEST" to "3.2.19",
"SCALATESTPLUS_JUNIT5" to "3.2.19.1"
"SCALATESTPLUS_JUNIT5" to "3.2.19.0",
"SCOVERAGE" to "2.1.1"
)
extra["VERSIONS"] = versions
modules/api/build.gradle.kts
+24 -8
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@@ -1,6 +1,6 @@
plugins {
jacoco
id("scala")
id("org.scoverage") version "8.1"
}
group = "de.nowchess"
@@ -14,14 +14,19 @@ repositories {
}
scala {
versions["SCALA3"]!!
scalaVersion = versions["SCALA3"]!!
}
tasks.test {
finalizedBy(tasks.jacocoTestReport) // report is always generated after tests run
scoverage {
scoverageVersion.set(versions["SCOVERAGE"]!!)
}
tasks.jacocoTestReport {
dependsOn(tasks.test) // tests are required to run before generating the report
configurations.scoverage {
resolutionStrategy.eachDependency {
if (requested.group == "org.scoverage" && requested.name.startsWith("scalac-scoverage-plugin_")) {
useTarget("${requested.group}:scalac-scoverage-plugin_2.13.16:2.3.0")
}
}
}
dependencies {
@@ -42,11 +47,22 @@ dependencies {
}
}
testImplementation(platform("org.junit:junit-bom:5.10.0"))
testImplementation(platform("org.junit:junit-bom:5.13.4"))
testImplementation("org.junit.jupiter:junit-jupiter")
testRuntimeOnly("org.junit.platform:junit-platform-launcher")
testImplementation("org.scalatest:scalatest_3:${versions["SCALATEST"]!!}")
testImplementation("org.scalatestplus:junit-5-13_3:${versions["SCALATESTPLUS_JUNIT5"]!!}")
}
tasks.test {
useJUnitPlatform()
useJUnitPlatform {
includeEngines("scalatest")
testLogging {
events("passed", "skipped", "failed")
}
}
finalizedBy(tasks.reportScoverage)
}
tasks.reportScoverage {
dependsOn(tasks.test)
}
modules/core/build.gradle.kts
+14 -33
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@@ -1,6 +1,6 @@
plugins {
id("scala")
jacoco
id("org.scoverage") version "8.1"
application
}
@@ -15,7 +15,11 @@ repositories {
}
scala {
versions["SCALA3"]!!
scalaVersion = versions["SCALA3"]!!
}
scoverage {
scoverageVersion.set(versions["SCOVERAGE"]!!)
}
application {
@@ -31,17 +35,6 @@ tasks.named<JavaExec>("run") {
standardInput = System.`in`
}
tasks.test {
finalizedBy(tasks.jacocoTestReport)
}
tasks.jacocoTestReport {
dependsOn(tasks.test)
reports {
xml.required.set(true)
html.required.set(true)
}
}
dependencies {
implementation("org.scala-lang:scala3-compiler_3") {
@@ -54,29 +47,17 @@ dependencies {
strictly(versions["SCALA3"]!!)
}
}
implementation("org.scala-lang:scala-library") {
version {
strictly(versions["SCALA_LIBRARY"]!!)
}
}
implementation(project(":modules:api"))
testImplementation(platform("org.junit:junit-bom:5.10.0"))
testImplementation("org.junit.jupiter:junit-jupiter")
testRuntimeOnly("org.junit.platform:junit-platform-launcher")
testImplementation("org.scalatest:scalatest_3:3.2.19")
testRuntimeOnly("org.junit.platform:junit-platform-engine:1.13.1")
testRuntimeOnly("org.scalatestplus:junit-5-13_3:3.2.19.0")
testImplementation("org.scalatest:scalatest_3:${versions["SCALATEST"]!!}")
testImplementation("org.scalatestplus:junit-5-11_3:${versions["SCALATESTPLUS_JUNIT5"]!!}")
}
tasks {
test{
useJUnitPlatform {
includeEngines("scalatest")
testLogging {
events("passed", "skipped", "failed")
}
}
}
tasks.test {
useJUnitPlatform()
finalizedBy(tasks.reportScoverage)
}
tasks.reportScoverage {
dependsOn(tasks.test)
}