Fix default run configuration name IDEA-202077

platform/external-system-impl/src/com/intellij/openapi/externalSystem/service/execution/AbstractExternalSystemTaskConfigurationType.java

@@ -1,6 +1,7 @@
 // Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.externalSystem.service.execution;
 
+import com.intellij.execution.ExecutionBundle;
 import com.intellij.execution.configurations.ConfigurationFactory;
 import com.intellij.execution.configurations.ConfigurationType;
 import com.intellij.execution.configurations.RunConfiguration;
@@ -143,7 +144,8 @@ public abstract class AbstractExternalSystemTaskConfigurationType implements Con
     }
     if (!StringUtil.isEmptyOrSpaces(projectName)) {
       buffer.append(projectName);
-    } else {
+    }
+    else if (!StringUtil.isEmptyOrSpaces(externalProjectPath)) {
       buffer.append(externalProjectPath);
     }
 
@@ -161,6 +163,9 @@ public abstract class AbstractExternalSystemTaskConfigurationType implements Con
     }
     if (!isTasksAbsent) buffer.append(tasksPostfix);
 
+    if (buffer.length() == 0) {
+      buffer.append(ExecutionBundle.message("run.configuration.unnamed.name.prefix"));
+    }
     return buffer.toString();
   }
 }

platform/external-system-impl/testSrc/com/intellij/openapi/externalSystem/service/execution/AbstractExternalSystemTaskConfigurationTypeTest.kt

@@ -0,0 +1,48 @@
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.openapi.externalSystem.service.execution
+
+import com.intellij.execution.ExecutionBundle
+import com.intellij.openapi.externalSystem.model.execution.ExternalSystemTaskExecutionSettings
+import com.intellij.openapi.project.Project
+import com.intellij.testFramework.UsefulTestCase
+import com.intellij.testFramework.fixtures.IdeaProjectTestFixture
+import com.intellij.testFramework.fixtures.IdeaTestFixtureFactory
+import junit.framework.TestCase
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+
+class AbstractExternalSystemTaskConfigurationTypeTest : UsefulTestCase() {
+
+  private lateinit var myTestFixture: IdeaProjectTestFixture
+  private lateinit var myProject: Project
+
+  @Before
+  override fun setUp() {
+    super.setUp()
+    myTestFixture = IdeaTestFixtureFactory.getFixtureFactory().createFixtureBuilder(name).fixture
+    myTestFixture.setUp()
+    myProject = myTestFixture.project
+  }
+
+  @After
+  override fun tearDown() {
+    try {
+      myTestFixture.tearDown()
+    }
+    finally {
+      super.tearDown()
+    }
+  }
+
+  @Test
+  fun `test correct name generated for empty task exec settings`() {
+    val testSettings = ExternalSystemTaskExecutionSettings().apply {
+      externalSystemIdString = "Test"
+    }
+    TestCase.assertEquals(ExecutionBundle.message("run.configuration.unnamed.name.prefix"),
+                          AbstractExternalSystemTaskConfigurationType.generateName(myProject,
+                                                                                   testSettings)
+    )
+  }
+}