Add new -today-in-history, -month, -day, and -year search filters (#1145)

* Introduce -reminisce, -month, -day, and -year
* Update expected_args in parse_args tests
* Add check before creating compare_d
* Misc changes
* Implement testing for -month, -day, -year, and -reminisce
* Compress tests into one Scenario Outline
* Fix failing tests by updating dates_similar journal
* Create 'we set current date and time to' step
* Use time.parse in reminisce
* Update dates_similar journal
* Make 'Searching in a journal' test shorter
* Lint
* Implement reminiscing test
* Add combination tests
* Finalize tests
* Finalize pytests
* Simplify reminisce tests
* Change reminsice help (since it also shows today's entries)
* Re-do tests; use various tests
* Remove old test data
* Better scenario description
* Standardize format for compare_d
* Rename -reminisce to -today-in-history

tests/test_parse_args.py

@@ -18,6 +18,10 @@ def expected_args(**kwargs):
         "delete": False,
         "edit": False,
         "end_date": None,
+        "today_in_history": False,
+        "month": None,
+        "day": None,
+        "year": None,
         "excluded": [],
         "export": False,
         "filename": None,
@@ -147,6 +151,27 @@ def test_on_date_alone():
     assert cli_as_dict("-on 'saturday'") == expected_args(on_date="saturday")
 
 
+def test_month_alone():
+    assert cli_as_dict("-month 1") == expected_args(month="1")
+    assert cli_as_dict("-month 01") == expected_args(month="01")
+    assert cli_as_dict("-month January") == expected_args(month="January")
+    assert cli_as_dict("-month Jan") == expected_args(month="Jan")
+
+
+def test_day_alone():
+    assert cli_as_dict("-day 1") == expected_args(day="1")
+    assert cli_as_dict("-day 01") == expected_args(day="01")
+
+
+def test_year_alone():
+    assert cli_as_dict("-year 2021") == expected_args(year="2021")
+    assert cli_as_dict("-year 21") == expected_args(year="21")
+
+
+def test_today_in_history_alone():
+    assert cli_as_dict("-today-in-history") == expected_args(today_in_history=True)
+
+
 def test_short_alone():
     assert cli_as_dict("--short") == expected_args(short=True)