adding app_globals test.

setup.py

@@ -14,7 +14,7 @@
 ]
 
 setup(name='uranium',
-      version='0.2.28b',
+      version='0.2.29',
       description='a build system for python',
       long_description=open('README.rst').read(),
       author='Yusuke Tsutsumi',

tests/test_app_globals_full.py

@@ -0,0 +1,20 @@
+URANIUM_PY = """
+from uranium import current_build
+
+@current_build.task
+def main(build):
+    print("ok")
+"""
+from uranium.scripts import execute_script
+from .conftest import URANIUM_SOURCE_ROOT
+
+
+def test_current_build_in_ubuild(tmpdir):
+    """ current_build shoud be valid in the ubuild.py """
+    tmpdir.join("ubuild.py").write(URANIUM_PY)
+
+    status, out, err = execute_script(
+        "uranium_standalone", "--uranium-dir", URANIUM_SOURCE_ROOT,
+        cwd=tmpdir.strpath
+    )
+    assert "ok" in out.decode("utf-8")

uranium/__init__.py

@@ -5,6 +5,8 @@
 # we import setuptools to ensure it's provided
 # when attempting to use uranium within a sandbox.
 import setuptools
+# same with markerlib
+import _markerlib
 
 from .remote import get_remote_script
 from .decorators import task_requires

uranium/build.py

@@ -150,7 +150,8 @@ def _run_script(self, path, task_name, override_func=None):
         execute this function (passing in the script object) instead
         of executing the task_name.
         """
-        script = build_script(path, {"build": self})
+        with self.as_current_build():
+            script = build_script(path, {"build": self})
 
         if override_func:
             return override_func(script)