Add CI build action (#7)

Author: migesok

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: ci
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: coursier/cache-action@v6
+
+      # SBT 1 base JDK version is 1.8
+      - name: setup Java 8
+        uses: actions/setup-java@v4
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+          cache: 'sbt'
+
+      - name: setup SBT
+        uses: sbt/setup-sbt@v1
+
+      - name: build
+        run: sbt clean buildFull

build.sbt

@@ -70,7 +70,11 @@ Test / testOptions += Tests.Argument(TestFrameworks.MUnit, "-b")
 
 enablePlugins(SbtPlugin)
 // set up 'scripted; sbt plugin for testing sbt plugins
-scriptedLaunchOpts ++= Seq("-Xmx1024M", "-Dplugin.version=" + version.value)
+scriptedLaunchOpts ++= Seq(
+  "-Xmx1024M",
+  "-Dplugin.version=" + version.value,
+  "-Dsbt.color=never", // to get reliable test results on sbt log
+)
 
 // TODO: #4 set up release publishing
 // this section is automatically generated by g8 sbt plugin template - not sure if correct or really needed

src/sbt-test/sbt-dependency-rules-plugin/fail/build.sbt

@@ -31,10 +31,10 @@ TaskKey[Unit]("checkTaskLogs") := {
   }
 
   if (!lastLogLines.contains(projectConfigRuleFailureLine)) {
-    sys.error("missing project config rule failure line")
+    sys.error(s"missing project config rule failure line:\n$projectConfigRuleFailureLine")
   }
 
   if (!lastLogLines.contains(finalTaskFailureLine)) {
-    sys.error("missing final task failure line")
+    sys.error(s"missing final task failure line:\n$finalTaskFailureLine")
   }
 }