Fix exec_properties for py_test

Fixes #461

Author: keith

examples/pytest/BUILD.bazel

@@ -13,6 +13,9 @@ py_test(
         "fixtures/*.json",
     ]),
     env_inherit = ["FOO"],
+    exec_properties = {
+        "test.foo": "bar",
+    },
     imports = ["../.."],
     package_collisions = "warning",
     pytest_main = True,

py/defs.bzl

@@ -60,13 +60,17 @@ py_image_layer = _py_image_layer
 resolutions = _resolutions
 
 def _py_binary_or_test(name, rule, srcs, main, deps = [], resolutions = {}, **kwargs):
+    exec_properties = kwargs.pop("exec_properties", {})
+    non_test_exec_properties = {k: v for k, v in exec_properties.items() if not k.startswith("test.")}
+
     # Compatibility with rules_python, see docs in py_executable.bzl
     main_target = "{}.find_main".format(name)
     determine_main(
         name = main_target,
         target_name = name,
         main = main,
         srcs = srcs,
+        exec_properties = non_test_exec_properties,
         **propagate_common_rule_attributes(kwargs)
     )
 
@@ -79,6 +83,7 @@ def _py_binary_or_test(name, rule, srcs, main, deps = [], resolutions = {}, **kw
         deps = deps,
         resolutions = resolutions,
         package_collisions = package_collisions,
+        exec_properties = exec_properties,
         **kwargs
     )