Statistics: Fix issue with missing days

Fixes #397

app/tests/unit/test_logic_graphs.py

@@ -0,0 +1,33 @@
+import datetime
+
+from app.logic.graphs import _flatten_data
+
+
+class DailyStat:
+	date: datetime.date
+	platform_minetest: int
+	platform_other: int
+	reason_new: int
+	reason_dependency: int
+	reason_update: int
+	
+	def __init__(self, date: str, x: int):
+		self.date = datetime.date.fromisoformat(date)
+		self.platform_minetest = x
+		self.platform_other = 0
+		self.reason_new = 0
+		self.reason_dependency = 0
+		self.reason_update = 0
+
+
+def test_flatten_data():
+	res = _flatten_data([
+		DailyStat("2022-03-28", 3),
+		DailyStat("2022-03-29", 10),
+		DailyStat("2022-04-01", 5),
+		DailyStat("2022-04-02", 1)
+	])
+
+	assert res["start"] == datetime.date.fromisoformat("2022-03-28")
+	assert res["end"] == datetime.date.fromisoformat("2022-04-02")
+	assert res["platform_minetest"] == [3, 10, 0, 0, 5, 1]