PY-23490: suggest test configuration for folder if name contains "tests"

Since plain python can't run on folder anyway, there is nothing bad about running folder as test configuration. Most runners support tests in folder discovery.

python/src/com/jetbrains/python/testing/universalTests/PyUniversalTests.kt

@@ -572,7 +572,7 @@ abstract class PyUniversalTestConfiguration(project: Project,
     // contains tests etc
     when (element) {
       is PyFile -> isTestFile(element)
-      is PsiDirectory -> element.children.any { it is PyFile && isTestFile(it) }
+      is PsiDirectory -> element.name.contains("test", true) || element.children.any { it is PyFile && isTestFile(it) }
       is PyFunction -> PythonUnitTestUtil.isTestCaseFunction(element, runBareFunctions)
       is PyClass -> PythonUnitTestUtil.isTestCaseClass(element, TypeEvalContext.userInitiated(element.project, element.containingFile))
       else -> false

python/testSrc/com/jetbrains/env/python/testing/CreateConfigurationByFileTask.java

@@ -55,7 +55,7 @@ class CreateConfigurationByFileTask<T extends AbstractPythonTestRunConfiguration
    */
   CreateConfigurationByFileTask(@Nullable final String testRunnerName,
                                 @NotNull final Class<T> expectedConfigurationType) {
-    this(testRunnerName, expectedConfigurationType, "test_file.py", "test_class.py");
+    this(testRunnerName, expectedConfigurationType, "test_file.py", "test_class.py", "folder_with_word_tests_in_name");
   }
 
   @NotNull