Smoke tests fail for 'groovy' & 'groovy-mte' templating after doing git clone, then Gradle clean & build

[Basil-Dot-Work]

I am new to JBake, so perhaps I did something wrong. But I don't think so. This seems simple and straightforward: clone project, build, and fail on a Mac with Apple Silicon chip.

In IntelliJ IDEA 2025.1 RC (Ultimate Edition), on macOS Sequoia 15.4 with chip M1 Pro, with Java 17.0.4 Corretto, I did this:

1. IntelliJ performed a git clone of https://github.com/jbake-org/jbake.git
2. In the Gradle pane of IntelliJ, I ran bake-base > Tasks > clean
3. In the Gradle pane of IntelliJ, I ran bake-base > Tasks > build

The smoke tests for templating in Thymeleaf, FreeMarker, and Jade all passed. But these two tests failed:

• shouldBakeWithProject[ groovy ]
• shouldBakeWithProject[ groovy-mte ]

In both cases, the error message was:

org.opentest4j.AssertionFailedError:
expected: 0
but was: 1

Workaround: In BuiltInProjectsTest.java file, comment out lines 40 & 41 to eliminate the "groovy" & "groovy-mte" array elements. This effectively omits these two templating systems from the smoke tests. The project then builds, tests pass.

//            {"groovy", "gsp"},
//            {"groovy-mte", "tpl"}

This should be easy for anyone to replicate. My first time posting an issue, so let me know if I can improve.

[Basil-Dot-Work]

Solution: Update to the latest version of Groovy 3.

Instead of 3.0.9, use 3.0.24.

Change line 20 of gradle.properties from:

groovyVersion = 3.0.9

… to:

groovyVersion = 3.0.24

Then all tests pass after a clean & build. 🎉

The latest versions of Groovy are listed here:
https://groovy.apache.org/download.html