Configure CI to test Kotlin workflows (#27)

.github/workflows/test.main.kts

@@ -0,0 +1,64 @@
+#!/usr/bin/env kotlin
+@file:Repository("https://repo.maven.apache.org/maven2/")
+@file:DependsOn("io.github.typesafegithub:github-workflows-kt:2.3.0")
+
+@file:Repository("https://bindings.krzeminski.it")
+@file:DependsOn("actions:checkout:v4")
+
+import io.github.typesafegithub.workflows.actions.actions.Checkout
+import io.github.typesafegithub.workflows.domain.RunnerType.UbuntuLatest
+import io.github.typesafegithub.workflows.domain.triggers.PullRequest
+import io.github.typesafegithub.workflows.domain.triggers.Push
+import io.github.typesafegithub.workflows.dsl.workflow
+
+workflow(
+    name = "Test",
+    on = listOf(
+        Push(branches = listOf("main")),
+        PullRequest(),
+    ),
+    sourceFile = __FILE__,
+) {
+    job(
+        id = "build_kotlin_scripts",
+        name = "Build Kotlin scripts",
+        runsOn = UbuntuLatest,
+    ) {
+        uses(action = Checkout())
+        run(
+            command = """
+            find -name *.main.kts -print0 | while read -d ${'$'}'\0' file
+            do
+                echo "Compiling ${'$'}file..."
+                kotlinc -Werror -Xallow-any-scripts-in-source-roots -Xuse-fir-lt=false "${'$'}file"
+            done
+            """.trimIndent()
+        )
+    }
+
+
+    job(
+        id = "workflows_consistency_check",
+        name = "Run consistency check on all GitHub workflows",
+        runsOn = UbuntuLatest,
+    ) {
+        uses(action = Checkout())
+        run(command = "cd .github/workflows")
+        run(
+            name = "Regenerate all workflow YAMLs",
+            command = """
+            find -name "*.main.kts" -print0 | while read -d ${'$'}'\0' file
+            do
+                if [ -x "${'$'}file" ]; then
+                    echo "Regenerating ${'$'}file..."
+                    (${'$'}file)
+                fi
+            done
+            """.trimIndent(),
+        )
+        run(
+            name = "Check if some file is different after regeneration",
+            command = "git diff --exit-code .",
+        )
+    }
+}

.github/workflows/test.yaml

@@ -0,0 +1,62 @@
+# This file was generated using Kotlin DSL (.github/workflows/test.main.kts).
+# If you want to modify the workflow, please change the Kotlin file and regenerate this YAML file.
+# Generated with https://github.com/typesafegithub/github-workflows-kt
+
+name: 'Test'
+on:
+  push:
+    branches:
+    - 'main'
+  pull_request: {}
+jobs:
+  check_yaml_consistency:
+    name: 'Check YAML consistency'
+    runs-on: 'ubuntu-latest'
+    steps:
+    - id: 'step-0'
+      name: 'Check out'
+      uses: 'actions/checkout@v4'
+    - id: 'step-1'
+      name: 'Execute script'
+      run: 'rm ''.github/workflows/test.yaml'' && ''.github/workflows/test.main.kts'''
+    - id: 'step-2'
+      name: 'Consistency check'
+      run: 'git diff --exit-code ''.github/workflows/test.yaml'''
+  build_kotlin_scripts:
+    name: 'Build Kotlin scripts'
+    runs-on: 'ubuntu-latest'
+    needs:
+    - 'check_yaml_consistency'
+    steps:
+    - id: 'step-0'
+      uses: 'actions/checkout@v4'
+    - id: 'step-1'
+      run: |-
+        find -name *.main.kts -print0 | while read -d $'\0' file
+        do
+            echo "Compiling $file..."
+            kotlinc -Werror -Xallow-any-scripts-in-source-roots -Xuse-fir-lt=false "$file"
+        done
+  workflows_consistency_check:
+    name: 'Run consistency check on all GitHub workflows'
+    runs-on: 'ubuntu-latest'
+    needs:
+    - 'check_yaml_consistency'
+    steps:
+    - id: 'step-0'
+      uses: 'actions/checkout@v4'
+    - id: 'step-1'
+      run: 'cd .github/workflows'
+    - id: 'step-2'
+      name: 'Regenerate all workflow YAMLs'
+      run: |-
+        find -name "*.main.kts" -print0 | while read -d $'\0' file
+        do
+            if [ -x "$file" ]; then
+                echo "Regenerating $file..."
+                ($file)
+            fi
+        done
+    - id: 'step-3'
+      name: 'Check if some file is different after regeneration'
+      run: 'git diff --exit-code .'