add better string representation for Process objects

cwltool/context.py

@@ -127,7 +127,7 @@ def __init__(self, kwargs: Optional[Dict[str, Any]] = None) -> None:
         self.basedir = ""  # type: str
         self.toplevel = False  # type: bool
         self.mutation_manager = None  # type: Optional[MutationManager]
-        self.make_fs_access = StdFsAccess  # type: Callable[[str], StdFsAccess]
+        self.make_fs_access = StdFsAccess
         self.path_mapper = PathMapper
         self.builder = None  # type: Optional[Builder]
         self.docker_outdir = ""  # type: str

cwltool/process.py

@@ -1074,6 +1074,10 @@ def job(
     ) -> JobsGeneratorType:
         pass
 
+    def __str__(self) -> str:
+        """Return the id of this CWL process."""
+        return f"{type(self).__name__}: {self.tool['id']}"
+
 
 _names = set()  # type: Set[str]
 

tests/test_examples.py

@@ -1574,3 +1574,27 @@ def test_custom_type_in_step_process() -> None:
         ]
     )
     assert err_code == 0
+
+
+def test_expression_tool_class() -> None:
+    """Confirm properties of the ExpressionTool class."""
+    factory = cwltool.factory.Factory()
+    tool_path = get_data("tests/wf/parseInt-tool.cwl")
+    expression_tool = factory.make(tool_path).t
+    assert str(expression_tool) == f"ExpressionTool: file://{tool_path}"
+
+
+def test_operation_class() -> None:
+    """Confirm properties of the AbstractOperation class."""
+    factory = cwltool.factory.Factory()
+    tool_path = get_data("tests/wf/operation/abstract-cosifer.cwl")
+    expression_tool = factory.make(tool_path).t
+    assert str(expression_tool) == f"AbstractOperation: file://{tool_path}"
+
+
+def test_command_line_tool_class() -> None:
+    """Confirm properties of the CommandLineTool class."""
+    factory = cwltool.factory.Factory()
+    tool_path = get_data("tests/echo.cwl")
+    expression_tool = factory.make(tool_path).t
+    assert str(expression_tool) == f"CommandLineTool: file://{tool_path}"