Repair and extend TSS API test.

tests/run/tss.pyx

@@ -2,6 +2,7 @@
 
 from cpython.pythread cimport *
 
+
 def tss_create_delete():
     """
     >>> tss_create_delete()
@@ -9,29 +10,48 @@ def tss_create_delete():
     """
     cdef Py_tss_t tss_key = Py_tss_NEEDS_INIT
     cdef bint after_create, after_delete
-    if PyThread_tss_create(&tss_key) > 0:
-        # handle key creation failure
-        pass
+    if PyThread_tss_create(&tss_key) != 0:
+        raise MemoryError()
     after_create = PyThread_tss_is_created(&tss_key) != 0
     PyThread_tss_delete(&tss_key)
     after_delete = PyThread_tss_is_created(&tss_key) != 0
     return (after_create, after_delete)
 
+
 def tss_alloc_free():
     """
     >>> tss_alloc_free()
-    (True, False)
+    False
+    """
+    cdef Py_tss_t *ptr_key
+    cdef bint after_alloc, after_free
+    ptr_key = PyThread_tss_alloc()
+    if ptr_key == NULL:
+        raise MemoryError()
+    after_alloc = PyThread_tss_is_created(ptr_key) != 0
+    PyThread_tss_free(ptr_key)
+    return after_alloc
+
+
+def tss_alloc_create_delete_free():
+    """
+    >>> tss_alloc_create_delete_free()
+    (False, True, False)
     """
     cdef Py_tss_t *ptr_key
     cdef bint after_alloc, after_free
     ptr_key = PyThread_tss_alloc()
     if ptr_key == NULL:
-        # handle key allocation failure
-        pass
+        raise MemoryError()
     after_alloc = PyThread_tss_is_created(ptr_key) != 0
+    if PyThread_tss_create(ptr_key) != 0:
+        raise MemoryError()
+    after_create = PyThread_tss_is_created(ptr_key) != 0
+    PyThread_tss_delete(ptr_key)
+    after_delete = PyThread_tss_is_created(ptr_key) != 0
     PyThread_tss_free(ptr_key)
-    after_free = PyThread_tss_is_created(ptr_key) != 0
-    return (after_alloc, after_free)
+    return (after_alloc, after_create, after_delete)
+
 
 def tss_set_get():
     """
@@ -41,9 +61,8 @@ def tss_set_get():
     cdef Py_tss_t tss_key = Py_tss_NEEDS_INIT
     cdef int the_value = 1
     cdef int ret_value
-    if PyThread_tss_create(&tss_key) > 0:
-        # handle key creation failure
-        pass
+    if PyThread_tss_create(&tss_key) != 0:
+        raise MemoryError()
     if PyThread_tss_get(&tss_key) == NULL:
         PyThread_tss_set(&tss_key, <void *>&the_value)
     ret_value = (<int *>PyThread_tss_get(&tss_key))[0]