Add tests for version check and metadata behavior

Author: Peter Amstutz

tests/test_load_tool.py

@@ -0,0 +1,44 @@
+from cwltool.load_tool import load_tool
+from cwltool.context import LoadingContext, RuntimeContext
+from cwltool.errors import WorkflowException
+import pytest
+from .util import (get_data, get_main_output,
+                   get_windows_safe_factory,
+                   needs_docker, working_directory,
+                   needs_singularity, temp_dir,
+                   windows_needs_docker)
+
+@windows_needs_docker
+def test_check_version():
+    """Test that it is permitted to load without updating, but not
+    execute.  Attempting to execute without updating to the internal
+    version should raise an error.
+
+    """
+
+    joborder = {"inp": "abc"}
+    loadingContext = LoadingContext({"do_update": True})
+    tool = load_tool(get_data("tests/echo.cwl"), loadingContext)
+    for j in tool.job(joborder, None, RuntimeContext()):
+        pass
+
+    loadingContext = LoadingContext({"do_update": False})
+    tool = load_tool(get_data("tests/echo.cwl"), loadingContext)
+    with pytest.raises(WorkflowException):
+        for j in tool.job(joborder, None, RuntimeContext()):
+            pass
+
+def test_use_metadata():
+    """Test that it will use the version from loadingContext.metadata if
+    cwlVersion isn't present in the document.
+
+    """
+
+    loadingContext = LoadingContext({"do_update": False})
+    tool = load_tool(get_data("tests/echo.cwl"), loadingContext)
+
+    loadingContext = LoadingContext()
+    loadingContext.metadata = tool.metadata
+    tooldata = tool.tool.copy()
+    del tooldata["cwlVersion"]
+    tool2 = load_tool(tooldata, loadingContext)