diff --git a/conservancy_beancount/reconcile/helper.py b/conservancy_beancount/reconcile/helper.py
index 2aff9af186562f86421f529e3e29db6a9206564d..4829c05b2a439f3d1399c74f7a7cae1e35c50952 100644
--- a/conservancy_beancount/reconcile/helper.py
+++ b/conservancy_beancount/reconcile/helper.py
@@ -114,7 +114,7 @@ def reconciliation_report_path(account, end_date):
     return f'Financial/Controls/Reports-for-Treasurer/{end_date}_{account_name}_bank-reconciliation.csv'
 
 
-def parse_args():
+def parse_args(argv):
     parser = argparse.ArgumentParser(description='Reconciliation helper')
     parser.add_argument('--beancount-file', required=True)
     parser.add_argument('--account', help='Full account name, e.g. "Liabilities:CreditCard:AMEX"', required=True)
@@ -126,7 +126,7 @@ def parse_args():
     parser.add_argument('--cost-function', default='COST')
     parser.add_argument('--grep-output-filename')
     # parser.add_argument('--report-group-regex')
-    args = parser.parse_args()
+    args = parser.parse_args(args=argv[1:])
     if args.month or args.period:
         if not (args.month and args.period):
             parser.error('--month and --period must be used together')
@@ -140,108 +140,118 @@ def beancount_file_exists(path):
     return os.path.isfile(path)
 
 
-args = parse_args()
-if not beancount_file_exists(args.beancount_file):
-    sys.exit(f'Beancount file does not exist: {args.beancount_file}')
-if args.month or args.period:
-    parsed_date = datetime.datetime.strptime(args.month, '%Y-%m').date()
-    preDate = end_of_month(parsed_date - relativedelta(months=args.period)).isoformat()
-    lastDateInPeriod = end_of_month(parsed_date).isoformat()
-    month = args.month
-else:
-    preDate = args.prev_end_date
-    lastDateInPeriod = args.cur_end_date.isoformat()
-    month = args.cur_end_date.strftime('%Y-%m')
-grep_output_file: typing.IO
-if args.grep_output_filename:
-    grep_output_file = open(args.grep_output_filename, 'w')
-else:
-    grep_output_file = tempfile.NamedTemporaryFile(prefix='bc-reconcile-grep-output_', mode='w', delete=False)
-beancount_file = args.beancount_file
-account = args.account
-cost_function = args.cost_function
-statement_match = args.statement_match if args.statement_match else month
-
-QUERIES = {
-    f"00: CLEARED BAL ENDING DAY BEFORE {preDate}":
-    # $CONLEDGER -V -C -e "$preDate" bal "/$acct/"
-    f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
-        AND date < {preDate} AND META('bank-statement') != NULL""",
-
-    f"01: ALL TRANSACTION BAL ENDING DAY BEFORE {preDate}":
-    # $CONLEDGER -V -e "$preDate" bal "/$acct/"
-    f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
-        AND date < {preDate}""",
-
-    f"02: ALL TRANSACTION BAL, ending {lastDateInPeriod}":
-    # $CONLEDGER -V -e "$date" bal "/$acct/"
-    f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
-    AND date <= {lastDateInPeriod}""",
-
-    f"03: UNCLEARED TRANSACTIONS, ending {lastDateInPeriod}":
-    f"""SELECT date, {cost_function}(position) as amt, ANY_META('check-id') as chknum, narration, payee, ENTRY_META('code') as code
-    WHERE account = "{account}"
-    AND date <= {lastDateInPeriod} AND META('bank-statement') = NULL
-    ORDER BY date, payee, narration""",
-
-    "04: UNCLEARED TRANSACTION FILE, SUITABLE FOR GREP":
-    # $CONLEDGER -w -F "%(filename):%(beg_line): %(date) %(code) %(payee) %(amount)\n" --sort d -U -e "$date" reg "/$acct/" > "$TMPDIR/unreconciled-lines"
-    f"""SELECT  ENTRY_META('filename') as file, META('lineno') as line, date,
-    {cost_function}(position) as amt, ANY_META('check-id') as chknum, narration, payee, ANY_META("entity") as entity, ENTRY_META('code') as c
-    WHERE account = "{account}"
-    AND date <= {lastDateInPeriod} AND META('bank-statement') = NULL
-    ORDER BY date, payee, narration""",
-
-    f"05: CLEARED BALANCE ending {lastDateInPeriod}":
-    # $CONLEDGER -V -C -e "$date" bal "/$acct/"
-    f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
-    AND date <= {lastDateInPeriod} AND META('bank-statement') != NULL""",
-
-    f"06: CLEARED SUBTRACTIONS on {month}'s statement":
-    # $CONLEDGER -V -C --limit "a > 0 and tag(\"Statement\") =~ /$statementSearchString/" bal "/$acct/"
-    f"""SELECT  sum(number({cost_function}(position))) AS aa
-    WHERE account = "{account}"
-    and META("bank-statement") ~  "{statement_match}" and number({cost_function}(position)) < 0""",
-
-    f"07: CLEARED ADDITIONS on {month}'s statement":
-    # $CONLEDGER -V -C --limit "a < 0 and tag(\"Statement\") =~ /$statementSearchString/" bal "/$acct/"
-    f"""SELECT  sum(number({cost_function}(position))) AS aa
-    WHERE account = "{account}"
-    and META("bank-statement") ~  "{statement_match}" and number({cost_function}(position)) > 0""",
-}
-
-# Run Beancount queries.
-print(f"START RECONCILIATION FOR {account} ENDING {lastDateInPeriod} (previous end date {preDate})")
-entries, _, options = loader.load_file(beancount_file)
-uncleared_rows = []  # Hack to capture results of query 03.
-cleared_balance = decimal.Decimal('0')
-all_trans_balance = decimal.Decimal('0')
-for desc, query in QUERIES.items():
-    rtypes, rrows = run_query(entries, options, query, numberify=True)
-    if not rrows:
-        print(f'{desc:<55} {"N/A":>11}')
-    elif desc.startswith('04'):
-        homedir = os.getenv('HOME', '')
-        print(f'{desc}\n   See {grep_output_file.name}')
-        grep_rows = [format_record_for_grep(row, homedir) for row in rrows]
-        print(tabulate(grep_rows), file=grep_output_file)
-    elif len(rrows) == 1 and isinstance(rrows[0][0], decimal.Decimal):
-        result = rrows[0][0]
-        print(f'{desc:<55} {result:11,.2f}')
-        if desc.startswith('02'):
-            all_trans_balance = result
-        if desc.startswith('05'):
-            cleared_balance = result
+def main(args):
+    if not beancount_file_exists(args.beancount_file):
+        sys.exit(f'Beancount file does not exist: {args.beancount_file}')
+    if args.month or args.period:
+        parsed_date = datetime.datetime.strptime(args.month, '%Y-%m').date()
+        preDate = end_of_month(parsed_date - relativedelta(months=args.period)).isoformat()
+        lastDateInPeriod = end_of_month(parsed_date).isoformat()
+        month = args.month
+    else:
+        preDate = args.prev_end_date
+        lastDateInPeriod = args.cur_end_date.isoformat()
+        month = args.cur_end_date.strftime('%Y-%m')
+    grep_output_file: typing.IO
+    if args.grep_output_filename:
+        grep_output_file = open(args.grep_output_filename, 'w')
     else:
-        headers = [c[0].capitalize() for c in rtypes]
-        if desc.startswith('03'):
-            uncleared_rows = rrows
-        print(desc)
-        print(textwrap.indent(tabulate(rrows, headers=headers), '    '))
-
-uncleared = [(r[0], r[2], r[4] or r[3], r[1]) for r in uncleared_rows]
-report_path = os.path.join(os.getenv('CONSERVANCY_REPOSITORY', ''), reconciliation_report_path(account, lastDateInPeriod))
-# TODO: Make the directory if it doesn't exist.
-with open(report_path, 'w') as f:
-    f.write(reconciliation_report(account, lastDateInPeriod, cleared_balance, uncleared, '1900-01-01', all_trans_balance, []))
-print(f'Wrote reconciliation report: {report_path}.')
+        grep_output_file = tempfile.NamedTemporaryFile(prefix='bc-reconcile-grep-output_', mode='w', delete=False)
+    beancount_file = args.beancount_file
+    account = args.account
+    cost_function = args.cost_function
+    statement_match = args.statement_match if args.statement_match else month
+
+    QUERIES = {
+        f"00: CLEARED BAL ENDING DAY BEFORE {preDate}":
+        # $CONLEDGER -V -C -e "$preDate" bal "/$acct/"
+        f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
+            AND date < {preDate} AND META('bank-statement') != NULL""",
+
+        f"01: ALL TRANSACTION BAL ENDING DAY BEFORE {preDate}":
+        # $CONLEDGER -V -e "$preDate" bal "/$acct/"
+        f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
+            AND date < {preDate}""",
+
+        f"02: ALL TRANSACTION BAL, ending {lastDateInPeriod}":
+        # $CONLEDGER -V -e "$date" bal "/$acct/"
+        f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
+        AND date <= {lastDateInPeriod}""",
+
+        f"03: UNCLEARED TRANSACTIONS, ending {lastDateInPeriod}":
+        f"""SELECT date, {cost_function}(position) as amt, ANY_META('check-id') as chknum, narration, payee, ENTRY_META('code') as code
+        WHERE account = "{account}"
+        AND date <= {lastDateInPeriod} AND META('bank-statement') = NULL
+        ORDER BY date, payee, narration""",
+
+        "04: UNCLEARED TRANSACTION FILE, SUITABLE FOR GREP":
+        # $CONLEDGER -w -F "%(filename):%(beg_line): %(date) %(code) %(payee) %(amount)\n" --sort d -U -e "$date" reg "/$acct/" > "$TMPDIR/unreconciled-lines"
+        f"""SELECT  ENTRY_META('filename') as file, META('lineno') as line, date,
+        {cost_function}(position) as amt, ANY_META('check-id') as chknum, narration, payee, ANY_META("entity") as entity, ENTRY_META('code') as c
+        WHERE account = "{account}"
+        AND date <= {lastDateInPeriod} AND META('bank-statement') = NULL
+        ORDER BY date, payee, narration""",
+
+        f"05: CLEARED BALANCE ending {lastDateInPeriod}":
+        # $CONLEDGER -V -C -e "$date" bal "/$acct/"
+        f"""SELECT sum({cost_function}(position)) AS aa WHERE account = "{account}"
+        AND date <= {lastDateInPeriod} AND META('bank-statement') != NULL""",
+
+        f"06: CLEARED SUBTRACTIONS on {month}'s statement":
+        # $CONLEDGER -V -C --limit "a > 0 and tag(\"Statement\") =~ /$statementSearchString/" bal "/$acct/"
+        f"""SELECT  sum(number({cost_function}(position))) AS aa
+        WHERE account = "{account}"
+        and META("bank-statement") ~  "{statement_match}" and number({cost_function}(position)) < 0""",
+
+        f"07: CLEARED ADDITIONS on {month}'s statement":
+        # $CONLEDGER -V -C --limit "a < 0 and tag(\"Statement\") =~ /$statementSearchString/" bal "/$acct/"
+        f"""SELECT  sum(number({cost_function}(position))) AS aa
+        WHERE account = "{account}"
+        and META("bank-statement") ~  "{statement_match}" and number({cost_function}(position)) > 0""",
+    }
+
+    # Run Beancount queries.
+    print(f"START RECONCILIATION FOR {account} ENDING {lastDateInPeriod} (previous end date {preDate})")
+    entries, _, options = loader.load_file(beancount_file)
+    uncleared_rows = []  # Hack to capture results of query 03.
+    cleared_balance = decimal.Decimal('0')
+    all_trans_balance = decimal.Decimal('0')
+    for desc, query in QUERIES.items():
+        rtypes, rrows = run_query(entries, options, query, numberify=True)
+        if not rrows:
+            print(f'{desc:<55} {"N/A":>11}')
+        elif desc.startswith('04'):
+            homedir = os.getenv('HOME', '')
+            print(f'{desc}\n   See {grep_output_file.name}')
+            grep_rows = [format_record_for_grep(row, homedir) for row in rrows]
+            print(tabulate(grep_rows), file=grep_output_file)
+        elif len(rrows) == 1 and isinstance(rrows[0][0], decimal.Decimal):
+            result = rrows[0][0]
+            print(f'{desc:<55} {result:11,.2f}')
+            if desc.startswith('02'):
+                all_trans_balance = result
+            if desc.startswith('05'):
+                cleared_balance = result
+        else:
+            headers = [c[0].capitalize() for c in rtypes]
+            if desc.startswith('03'):
+                uncleared_rows = rrows
+            print(desc)
+            print(textwrap.indent(tabulate(rrows, headers=headers), '    '))
+
+    uncleared = [(r[0], r[2], r[4] or r[3], r[1]) for r in uncleared_rows]
+    report_path = os.path.join(os.getenv('CONSERVANCY_REPOSITORY', ''), reconciliation_report_path(account, lastDateInPeriod))
+    # TODO: Make the directory if it doesn't exist.
+    with open(report_path, 'w') as f:
+        f.write(reconciliation_report(account, lastDateInPeriod, cleared_balance, uncleared, '1900-01-01', all_trans_balance, []))
+    print(f'Wrote reconciliation report: {report_path}.')
+
+
+if __name__ == '__main__':
+    args = parse_args(sys.argv)
+    main(args)
+
+
+def entry_point():
+    args = parse_args(sys.argv)
+    main(args)