Add test to see if dependencies properly loaded on populate.

Author: guzman-raphael

tests/test_autopopulate.py

@@ -1,6 +1,7 @@
 from nose.tools import assert_equal, assert_false, assert_true, raises
-from . import schema
+from . import schema, PREFIX
 from datajoint import DataJointError
+import datajoint as dj
 
 
 class TestPopulate:
@@ -64,3 +65,37 @@ def test_allow_insert(self):
         key['experiment_id'] = 1001
         key['experiment_date'] = '2018-10-30'
         self.experiment.insert1(key)
+
+    def test_load_dependencies(self):
+        schema = dj.Schema(f'{PREFIX}_load_dependencies_populate')
+
+        @schema
+        class ImageSource(dj.Lookup):
+            definition = """
+            image_source_id: int
+            """
+            contents = [(0,)]
+
+        @schema
+        class Image(dj.Imported):
+            definition = """
+            -> ImageSource
+            ---
+            image_data: longblob
+            """
+
+            def make(self, key):
+                self.insert1(dict(key, image_data=dict()))
+        Image.populate()
+
+        @schema
+        class Crop(dj.Computed):
+            definition = """
+            -> Image
+            ---
+            crop_image: longblob
+            """
+
+            def make(self, key):
+                self.insert1(dict(key, crop_image=dict()))
+        Crop.populate()