diff --git a/safegraph/delphi_safegraph/process.py b/safegraph/delphi_safegraph/process.py
index f51b1faff..5baf6266b 100644
--- a/safegraph/delphi_safegraph/process.py
+++ b/safegraph/delphi_safegraph/process.py
@@ -15,6 +15,7 @@
 # Base file name for raw data CSVs.
 CSV_NAME = 'social-distancing.csv.gz'
 
+
 def validate(df):
     """Confirms that a data frame has only one date."""
     timestamps = df['date_range_start'].apply(date_from_timestamp)
@@ -235,13 +236,13 @@ def process_window(df_list: List[pd.DataFrame],
                 f'{signal}_se': 'se',
                 f'{signal}_n': 'sample_size',
             }, axis=1)
-            df_export.to_csv(f'{export_dir}/{date}_{geo_res}_{signal}.csv',
+            date_str = date.strftime('%Y%m%d')
+            df_export.to_csv(f'{export_dir}/{date_str}_{geo_res}_{signal}.csv',
                              na_rep='NA',
                              index=False, )
 
 
-def process(current_filename: str,
-            previous_filenames: List[str],
+def process(filenames: List[str],
             signal_names: List[str],
             wip_signal,
             geo_resolutions: List[str],
@@ -250,11 +251,11 @@ def process(current_filename: str,
     as averaged over the previous week.
     Parameters
     ----------
-    current_filename: str
-        path to file holding the target date's data.
-    previous_filenames: List[str]
-        paths to files holding data from each day in the week preceding the
-        target date.
+    current_filename: List[str]
+        paths to files holding data.
+        The first entry of the list should correspond to the target date while
+        the remaining entries should correspond to the dates from each day in
+        the week preceding the target date.
     signal_names: List[str]
         signal names to be processed for a single date.
         A second version of each such signal named {SIGNAL}_7d_avg will be
@@ -274,8 +275,8 @@ def process(current_filename: str,
     one for the data averaged over the previous week to
     {export_dir}/{date}_{resolution}_{signal}_7d_avg.csv.
     """
-    past_week = [pd.read_csv(current_filename)]
-    for fname in previous_filenames:
+    past_week = []
+    for fname in filenames:
         if os.path.exists(fname):
             past_week.append(pd.read_csv(fname))
 
@@ -286,8 +287,8 @@ def process(current_filename: str,
                    export_dir)
     # ...then as part of the whole window.
     process_window(past_week,
-                  add_prefix(add_suffix(signal_names, '_7d_avg'),
-                             wip_signal,
-                             'wip_'),
-                  geo_resolutions,
-                  export_dir)
+                   add_prefix(add_suffix(signal_names, '_7d_avg'),
+                              wip_signal,
+                              'wip_'),
+                   geo_resolutions,
+                   export_dir)
diff --git a/safegraph/delphi_safegraph/run.py b/safegraph/delphi_safegraph/run.py
index 3fa4105af..305a9772f 100644
--- a/safegraph/delphi_safegraph/run.py
+++ b/safegraph/delphi_safegraph/run.py
@@ -3,6 +3,7 @@
 when the module is run with `python -m MODULE_NAME`.
 """
 import glob
+import functools
 import multiprocessing as mp
 import subprocess
 
@@ -15,50 +16,61 @@
 def run_module():
     """Creates the Safegraph indicator."""
     params = read_params()
+
+    # Place to write output files.
     export_dir = params["export_dir"]
+    # Location of input files.
     raw_data_dir = params["raw_data_dir"]
+
+    # Number of cores to use in multiprocessing.
     n_core = int(params["n_core"])
+
+    # AWS credentials
     aws_access_key_id = params["aws_access_key_id"]
     aws_secret_access_key = params["aws_secret_access_key"]
     aws_default_region = params["aws_default_region"]
     aws_endpoint = params["aws_endpoint"]
-    wip_signal = params["wip_signal"]
+    # Whether to sync `raw_data_dir` with an AWS backend.
+    # Must be a bool in the JSON file (rather than the string "True" or "False")
+    sync = params["sync"]
 
-    def process_file(current_filename):
-        """Wrapper around `process()` that only takes a single argument.
+    # List of work-in-progress signal names.
+    wip_signal = params["wip_signal"]
 
-        A single argument function is necessary to use `pool.map()` below.
-        Because each call to `process()` has two arguments that are dependent
-        on the input file name (`current_filename` and `previous_filenames`),
-        we choose to use this wrapper rather than something like
-        `functools.partial()`.
-        """
-        return process(current_filename,
-                       files_in_past_week(current_filename),
-                       signal_names=SIGNALS,
-                       wip_signal=wip_signal,
-                       geo_resolutions=GEO_RESOLUTIONS,
-                       export_dir=export_dir,
-                       )
+    # Convert `process()` to a single-argument function for use in `pool.map`.
+    single_arg_process = functools.partial(
+        process,
+        signal_names=SIGNALS,
+        wip_signal=wip_signal,
+        geo_resolutions=GEO_RESOLUTIONS,
+        export_dir=export_dir,
+    )
 
     # Update raw data
     # Why call subprocess rather than using a native Python client, e.g. boto3?
     # Because boto3 does not have a simple rsync-like call that can perform
     # the following behavior elegantly.
-    subprocess.run(
-        f'aws s3 sync s3://sg-c19-response/social-distancing/v2/ '
-        f'{raw_data_dir}/social-distancing/ --endpoint {aws_endpoint}',
-        env={
-            'AWS_ACCESS_KEY_ID': aws_access_key_id,
-            'AWS_SECRET_ACCESS_KEY': aws_secret_access_key,
-            'AWS_DEFAULT_REGION': aws_default_region,
-        },
-        shell=True,
-        check=True,
-    )
+    if sync:
+        subprocess.run(
+            f'aws s3 sync s3://sg-c19-response/social-distancing/v2/ '
+            f'{raw_data_dir}/social-distancing/ --endpoint {aws_endpoint}',
+            env={
+                'AWS_ACCESS_KEY_ID': aws_access_key_id,
+                'AWS_SECRET_ACCESS_KEY': aws_secret_access_key,
+                'AWS_DEFAULT_REGION': aws_default_region,
+            },
+            shell=True,
+            check=True,
+        )
 
     files = glob.glob(f'{raw_data_dir}/social-distancing/**/*.csv.gz',
                       recursive=True)
 
+    files_with_previous_weeks = []
+    for fname in files:
+        previous_week = [fname]
+        previous_week.extend(files_in_past_week(fname))
+        files_with_previous_weeks.append(previous_week)
+
     with mp.Pool(n_core) as pool:
-        pool.map(process_file, files)
+        pool.map(single_arg_process, files_with_previous_weeks)
diff --git a/safegraph/params.json.template b/safegraph/params.json.template
index 7e6096821..c0f200031 100644
--- a/safegraph/params.json.template
+++ b/safegraph/params.json.template
@@ -8,5 +8,9 @@
   "aws_secret_access_key": "",
   "aws_default_region": "",
   "aws_endpoint": "",
-   "wip_signal" : ""
+  "sync": true,
+  "wip_signal" : ["median_home_dwell_time_7d_avg",
+                  "completely_home_prop_7d_avg",
+                  "part_time_work_prop_7d_avg",
+                  "full_time_work_prop_7d_avg"]
 }
diff --git a/safegraph/tests/conftest.py b/safegraph/tests/conftest.py
new file mode 100644
index 000000000..ca172928b
--- /dev/null
+++ b/safegraph/tests/conftest.py
@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+
+import pytest
+
+import os
+from os.path import join
+
+from delphi_safegraph.run import run_module
+
+
+@pytest.fixture(scope="session")
+def run_as_module():
+    # Clean receiving directory
+    for fname in os.listdir("receiving"):
+        if ".csv" in fname:
+            os.remove(join("receiving", fname))
+    run_module()
diff --git a/safegraph/tests/params.json.template b/safegraph/tests/params.json.template
index 6839ac4e6..1b6e18f99 100644
--- a/safegraph/tests/params.json.template
+++ b/safegraph/tests/params.json.template
@@ -1,6 +1,6 @@
 {
   "static_file_dir": "./static",
-  "raw_data_dir": "/mnt/data/safegraph/",
+  "raw_data_dir": "./raw_data",
   "export_dir": "./receiving",
   "cache_dir": "./cache",
   "n_core": "12",
@@ -11,5 +11,6 @@
   "wip_signal" : ["median_home_dwell_time_7d_avg",
                   "completely_home_prop_7d_avg",
                   "part_time_work_prop_7d_avg",
-                  "full_time_work_prop_7d_avg"]
+                  "full_time_work_prop_7d_avg"],
+  "sync": false
 }
diff --git a/safegraph/tests/raw_data/social-distancing/2020/06/10/2020-06-10-social-distancing.csv.gz b/safegraph/tests/raw_data/social-distancing/2020/06/10/2020-06-10-social-distancing.csv.gz
new file mode 100644
index 000000000..81f737597
Binary files /dev/null and b/safegraph/tests/raw_data/social-distancing/2020/06/10/2020-06-10-social-distancing.csv.gz differ
diff --git a/safegraph/tests/raw_data/social-distancing/2020/06/11/2020-06-11-social-distancing.csv.gz b/safegraph/tests/raw_data/social-distancing/2020/06/11/2020-06-11-social-distancing.csv.gz
new file mode 100644
index 000000000..195d12ca6
Binary files /dev/null and b/safegraph/tests/raw_data/social-distancing/2020/06/11/2020-06-11-social-distancing.csv.gz differ
diff --git a/safegraph/tests/raw_data/social-distancing/2020/06/12/2020-06-12-social-distancing.csv.gz b/safegraph/tests/raw_data/social-distancing/2020/06/12/2020-06-12-social-distancing.csv.gz
new file mode 100644
index 000000000..56fa6ac41
Binary files /dev/null and b/safegraph/tests/raw_data/social-distancing/2020/06/12/2020-06-12-social-distancing.csv.gz differ
diff --git a/safegraph/tests/receiving/.gitignore b/safegraph/tests/receiving/.gitignore
new file mode 100644
index 000000000..afed0735d
--- /dev/null
+++ b/safegraph/tests/receiving/.gitignore
@@ -0,0 +1 @@
+*.csv
diff --git a/safegraph/tests/test_process.py b/safegraph/tests/test_process.py
index e6d6ddc0e..4c4640ca6 100644
--- a/safegraph/tests/test_process.py
+++ b/safegraph/tests/test_process.py
@@ -128,7 +128,7 @@ def test_process_window(self, tmp_path):
             'sample_size': [2, 2]
         })
         actual = pd.read_csv(
-            export_dir / '2020-02-14_county_completely_home_prop.csv')
+            export_dir / '20200214_county_completely_home_prop.csv')
         pd.testing.assert_frame_equal(expected, actual)
 
     def test_process(self, tmp_path):
@@ -137,11 +137,11 @@ def test_process(self, tmp_path):
         export_dir = tmp_path / 'export'
         export_dir.mkdir()
 
-        process('raw_data/small_raw_data_0.csv',
-                # File 2 does not exist.
-                ['raw_data/small_raw_data_1.csv',
+        process(['raw_data/small_raw_data_0.csv',
+                 'raw_data/small_raw_data_1.csv',
+                 # File 2 does not exist.
                  'raw_data/small_raw_data_2.csv',
-                 'raw_data/small_raw_data_3.csv', ],
+                 'raw_data/small_raw_data_3.csv'],
                 SIGNALS,
                 ['median_home_dwell_time',
                  'completely_home_prop_7d_avg'],
@@ -199,7 +199,7 @@ def test_process(self, tmp_path):
             })
         }
         actual = {signal: pd.read_csv(
-            export_dir / f'2020-06-12_state_{signal}.csv')
+            export_dir / f'20200612_state_{signal}.csv')
             for signal in expected}
         for signal in expected:
             pd.testing.assert_frame_equal(expected[signal], actual[signal])
diff --git a/safegraph/tests/test_run.py b/safegraph/tests/test_run.py
new file mode 100644
index 000000000..689122b46
--- /dev/null
+++ b/safegraph/tests/test_run.py
@@ -0,0 +1,41 @@
+"""Tests for the `run_module()` function."""
+import os
+
+import pandas as pd
+
+from delphi_safegraph.constants import (SIGNALS,
+                                        GEO_RESOLUTIONS)
+
+
+class TestRun:
+    """Tests for the `run_module()` function."""
+
+    def test_output_files_exist(self, run_as_module):
+        """Tests that the outputs of `run_module` exist."""
+        csv_files = set(
+            x for x in os.listdir("receiving") if x.endswith(".csv"))
+        expected_files = set()
+        for date in ("20200612", "20200611", "20200610"):
+            for geo in GEO_RESOLUTIONS:
+                for signal in SIGNALS:
+                    print(date, geo, signal)
+                    single_date_signal = "_".join([date, geo, signal]) + ".csv"
+                    expected_files.add(single_date_signal)
+                    single_date_signal = "_".join(
+                        [date, geo, "wip", signal, "7d_avg"]) + ".csv"
+                    expected_files.add(single_date_signal)
+
+        assert expected_files == csv_files
+
+    def test_output_files_format(self, run_as_module):
+        """Tests that output files are in the correct format."""
+        csv_files = os.listdir("receiving")
+        for filename in csv_files:
+            if not filename.endswith(".csv"):
+                continue
+            # Print the file name so that we can tell which file (if any)
+            # triggered the error.
+            print(filename)
+            df = pd.read_csv(os.path.join("receiving", filename))
+            assert (df.columns.values ==
+                ["geo_id", "val", "se", "sample_size"]).all()
diff --git a/safegraph_patterns/delphi_safegraph_patterns/run.py b/safegraph_patterns/delphi_safegraph_patterns/run.py
index be2618f2d..ce615f787 100644
--- a/safegraph_patterns/delphi_safegraph_patterns/run.py
+++ b/safegraph_patterns/delphi_safegraph_patterns/run.py
@@ -58,12 +58,13 @@ def run_module():
         # Why call subprocess rather than using a native Python client, e.g. boto3?
         # Because boto3 does not have a simple rsync-like call that can perform
         # the following behavior elegantly.
-        if not bool(params["test"]):
+        if params["sync"]:
             subprocess.run(
                     f'aws s3 sync s3://sg-c19-response/{ver[1]}/ '
                     f'{raw_data_dir}/{ver[1]}/ --endpoint {aws_endpoint}',
                     env=env_vars,
                     shell=True,
+                    check=True
             )
 
         brand_df = pd.read_csv(
diff --git a/safegraph_patterns/params.json.template b/safegraph_patterns/params.json.template
index 317c1693f..fe94f416b 100644
--- a/safegraph_patterns/params.json.template
+++ b/safegraph_patterns/params.json.template
@@ -8,5 +8,5 @@
   "aws_secret_access_key": "",
   "aws_default_region": "",
   "aws_endpoint": "",
-  "test": "False"
+  "sync": true,
 }
diff --git a/safegraph_patterns/tests/params.json.template b/safegraph_patterns/tests/params.json.template
index b4eb1d471..78fd73fe5 100644
--- a/safegraph_patterns/tests/params.json.template
+++ b/safegraph_patterns/tests/params.json.template
@@ -8,5 +8,5 @@
   "aws_secret_access_key": "",
   "aws_default_region": "",
   "aws_endpoint": "",
-  "test": "True"
+  "sync": false
 }
diff --git a/safegraph_patterns/tests/receiving/.gitignore b/safegraph_patterns/tests/receiving/.gitignore
index e69de29bb..afed0735d 100644
--- a/safegraph_patterns/tests/receiving/.gitignore
+++ b/safegraph_patterns/tests/receiving/.gitignore
@@ -0,0 +1 @@
+*.csv
diff --git a/safegraph_patterns/tests/test_run.py b/safegraph_patterns/tests/test_run.py
index b4bd90ceb..8644eb6c4 100644
--- a/safegraph_patterns/tests/test_run.py
+++ b/safegraph_patterns/tests/test_run.py
@@ -5,7 +5,7 @@
 
 from delphi_safegraph_patterns.run import (run_module, METRICS,
                                            SENSORS, GEO_RESOLUTIONS)
-                                           
+                                         
 
 class TestRun:
     def test_output_files(self, run_as_module):