move build to get tests to run on windows
diff --git a/tensorflow/core/platform/BUILD b/tensorflow/core/platform/BUILD
index 1e0fa66..88453bd 100644
--- a/tensorflow/core/platform/BUILD
+++ b/tensorflow/core/platform/BUILD
@@ -419,15 +419,6 @@
     ],
 )
 
-py_test(
-    name = "ram_file_system_test",
-    srcs = ["ram_file_system_test.py"],
-    python_version = "PY3",
-    deps = [
-        "//tensorflow:tensorflow_py",
-    ],
-)
-
 cc_library(
     name = "numbers",
     srcs = ["numbers.cc"],
diff --git a/tensorflow/python/platform/BUILD b/tensorflow/python/platform/BUILD
index e16f40b..aac3262 100644
--- a/tensorflow/python/platform/BUILD
+++ b/tensorflow/python/platform/BUILD
@@ -237,6 +237,16 @@
     ],
 )
 
+tf_py_test(
+    name = "ram_file_system_test",
+    size = "small",
+    srcs = ["ram_file_system_test.py"],
+    python_version = "PY3",
+    deps = [
+        "//tensorflow:tensorflow_py",
+    ],
+)
+
 pybind_extension(
     name = "_pywrap_tf2",
     srcs = ["enable_tf2.cc"],
diff --git a/tensorflow/core/platform/ram_file_system_test.py b/tensorflow/python/platform/ram_file_system_test.py
similarity index 93%
rename from tensorflow/core/platform/ram_file_system_test.py
rename to tensorflow/python/platform/ram_file_system_test.py
index c79fdf7..ab21460 100644
--- a/tensorflow/core/platform/ram_file_system_test.py
+++ b/tensorflow/python/platform/ram_file_system_test.py
@@ -157,10 +157,22 @@
 
   def test_join(self):
     expected = 'ram://exists/a/b/c.txt'
-    self.assertEqual(file_io.join('ram://', 'exists', 'a', 'b', 'c.txt'), expected)
-    self.assertEqual(file_io.join('ram://exists', 'a', 'b', 'c.txt'), expected)
-    self.assertEqual(file_io.join('ram://', 'exists/a', 'b', 'c.txt'), expected)
-    self.assertEqual(file_io.join('ram://', 'exists', 'a', 'b/c.txt'), expected)
+    self.assertEqual(
+      file_io.join('ram://', 'exists', 'a', 'b', 'c.txt'),
+      expected
+    )
+    self.assertEqual(
+      file_io.join('ram://exists', 'a', 'b', 'c.txt'),
+      expected
+    )
+    self.assertEqual(
+      file_io.join('ram://', 'exists/a', 'b', 'c.txt'),
+      expected
+    )
+    self.assertEqual(
+      file_io.join('ram://', 'exists', 'a', 'b/c.txt'),
+      expected
+    )
 
 if __name__ == '__main__':
   test.main()