Add a test for the execution of an algorithm with both local and remote inputs

beat/cmdline/test/instructions/algo_using_database_and_cached_files.json

+{
+    "algorithm": "user/sum/1",
+    "channel": "main",
+    "inputs": {
+        "a": {
+            "database": "integers_db/1",
+            "protocol": "double",
+            "set": "double",
+            "output": "a",
+            "channel": "main"
+        },
+        "b": {
+            "hash": "abcdef0123456789AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
+            "channel": "main"
+        }
+    },
+    "outputs": {
+        "sum": {
+          "channel": "main"
+        }
+    },
+    "parameters": {
+    },
+    "environment": {
+        "name": "environment",
+        "version": "1"
+    }
+}

beat/cmdline/test/test_algorithms.py

@@ -204,6 +204,23 @@ def test_execute_algorithm_using_cached_files():
   nose.tools.eq_(call('execute', instructions, cache=tmp_prefix), 0)
 
 
+@slow
+@nose.tools.with_setup(teardown=cleanup)
+def test_execute_algorithm_using_database_and_cached_files():
+  instructions_dir = os.path.join(os.path.dirname(__file__), 'instructions')
+  cache_dir = os.path.join(tmp_prefix, 'ab', 'cd', 'ef')
+
+  os.makedirs(cache_dir)
+  shutil.copy(os.path.join(instructions_dir, '0123456789AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.0.9.data'), cache_dir)
+  shutil.copy(os.path.join(instructions_dir, '0123456789AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.0.9.data.checksum'), cache_dir)
+  shutil.copy(os.path.join(instructions_dir, '0123456789AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.0.9.index'), cache_dir)
+  shutil.copy(os.path.join(instructions_dir, '0123456789AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.0.9.index.checksum'), cache_dir)
+
+  instructions = os.path.join(instructions_dir, 'algo_using_database_and_cached_files.json')
+
+  nose.tools.eq_(call('execute', instructions, cache=tmp_prefix), 0)
+
+
 @slow
 @nose.tools.with_setup(teardown=cleanup)
 def test_execute_analyzer():