Fix #61: Use version catalog to specify project and build dependencies

build.gradle

@@ -2,8 +2,8 @@ import org.gosulang.gradle.build.VersionWriterTask
 import java.nio.charset.StandardCharsets
 
 plugins {
-    id 'com.gradle.plugin-publish' version "${gradlePublishPluginVersion}"
-    id 'net.researchgate.release' version "${researchgateReleaseGradlePluginVersion}"
+    alias(libs.plugins.plugin.publish)
+    alias(libs.plugins.release)
     id 'groovy'
     id 'java-gradle-plugin'
     id 'maven-publish'
@@ -40,14 +40,18 @@ repositories {
 }
 
 dependencies {
-    testImplementation platform("org.junit:junit-bom:${junitPlatformVersion}")
-    testImplementation "org.junit.jupiter:junit-jupiter"
-    testRuntimeOnly "org.junit.vintage:junit-vintage-engine"
-    testImplementation "junit:junit:${junitVersion}" //TODO refactor existing unit tests and get rid of junit 4
-    testImplementation "org.hamcrest:hamcrest-library:${hamcrestLibraryVersion}"
-    testImplementation "org.spockframework:spock-core:${spockCoreVersion}"
-    testImplementation "org.assertj:assertj-core:${assertjCoreVersion}"
-    testImplementation "org.opentest4j:opentest4j:${opentest4jVersion}"
+    testImplementation platform(libs.junit.platform)
+    testImplementation libs.junit.jupiter
+    testRuntimeOnly libs.junit.vintageEngine
+    testImplementation libs.junit4
+    testImplementation libs.hamcrest
+    testImplementation(libs.spock.core) {
+        artifact {
+            type =  "jar"
+        }
+    }
+    testImplementation libs.assertj
+    testImplementation libs.opentest4j
 }
 
 java {

gradle.properties

@@ -12,17 +12,5 @@ org.gradle.workers.max=1
 gosuVersion=1.17.8
 testedVersions=8.2,8.10.1
 
-# Gradle plugins
-gradlePublishPluginVersion=0.15.0
-researchgateReleaseGradlePluginVersion=3.0.2
-
 # For docker container
-javaVersion=11
-
-# Test implementation dependencies
-assertjCoreVersion=3.24.2
-hamcrestLibraryVersion=2.2
-spockCoreVersion=2.3-groovy-3.0@jar
-junitVersion=4.13.2
-junitPlatformVersion=5.8.2
-opentest4jVersion=1.3.0
+javaVersion=11

gradle/libs.versions.toml

@@ -0,0 +1,13 @@
+[libraries]
+junit-platform = { module = "org.junit:junit-bom", version = "5.8.2" }
+junit-jupiter = { module = "org.junit.jupiter:junit-jupiter" } # version inherited from junit-bom
+junit-vintageEngine = { module = "org.junit.vintage:junit-vintage-engine" } # version inherited from junit-bom
+junit4 = { module = "junit:junit", version = "4.13.2" }
+hamcrest = { module = "org.hamcrest:hamcrest-library", version = "2.2" }
+spock-core = { module = "org.spockframework:spock-core", version = "2.3-groovy-3.0" }
+assertj = { module = "org.assertj:assertj-core", version = "3.24.2" }
+opentest4j = { module = "org.opentest4j:opentest4j", version = "1.3.0" }
+
+[plugins]
+plugin-publish = { id = "com.gradle.plugin-publish", version = "0.15.0" }
+release = { id = "net.researchgate.release", version = "3.0.2" }