test: MPS 2023.3 failed to start in test mode

Author: slisson

bulk-model-sync-lib-mps-test/src/test/kotlin/org/modelix/model/sync/bulk/lib/test/MPSTestBase.kt

@@ -29,6 +29,10 @@ import java.util.regex.Pattern
 private val TESTDATA_PATTERN = Pattern.compile(".*\\(testdata (.*)\\)")
 
 abstract class MPSTestBase : HeavyPlatformTestCase() {
+    init {
+        // workaround for MPS 2023.3 failing to start in test mode
+        System.setProperty("intellij.platform.load.app.info.from.resources", "true")
+    }
 
     protected lateinit var projectDir: Path
 

mps-model-adapters-plugin/src/test/kotlin/org/modelix/model/mpsadapters/MpsAdaptersTestBase.kt

@@ -39,6 +39,10 @@ import kotlin.io.path.deleteRecursively
  */
 @Suppress("removal")
 abstract class MpsAdaptersTestBase(val testDataName: String?) : UsefulTestCase() {
+    init {
+        // workaround for MPS 2023.3 failing to start in test mode
+        System.setProperty("intellij.platform.load.app.info.from.resources", "true")
+    }
 
     protected lateinit var project: Project