chore(tests): include tests for DateTime library

src/tests.rs

@@ -106,6 +106,16 @@ create_tests! {
     task_delay: "task/delay",
     task_spawn: "task/spawn",
     task_wait: "task/wait",
+
+    datetime_now: "datetime/now",
+    datetime_fromunixtimestamp: "datetime/fromunixtimestamp",
+    datetime_fromuniversaltime: "datetime/fromuniversaltime",
+    datetime_touniversaltime: "datetime/touniversaltime",
+    datetime_fromlocaltime: "datetime/fromlocaltime",
+    datetime_tolocaltime: "datetime/tolocaltime",
+    datetime_fromisodate: "datetime/fromisodate",
+    datetime_toisodate: "datetime/toisodate",
+    datetime_formattime: "datetime/formattime",
 }
 
 #[cfg(feature = "roblox")]

tests/datetime/formattime.luau

@@ -0,0 +1,16 @@
+local DateTime = require("@lune/datetime")
+
+-- UTC Timezone
+assert(
+	DateTime.fromUnixTimestamp(1693068988):formatTime("utc", "%Y-%m-%dT%H:%M:%SZ", "en")
+		== "2023-08-26T16:56:28Z",
+	"invalid ISO 8601 formatting for DateTime.formatTime()"
+)
+
+assert(
+	DateTime.fromUnixTimestamp(1693068988):formatTime("utc", "%A, %d %B %Y", "fr")
+		== "samedi, 26 août 2023",
+	"expected format specifier '%A, %d %B %Y' to return 'samedi, 26 août 2023' for locale 'fr'"
+)
+
+-- TODO: local timezone tests

tests/datetime/fromisodate.luau

@@ -0,0 +1,13 @@
+local DateTime = require("@lune/datetime")
+
+-- Fails due to issue with rust side implementation
+
+assert(
+	DateTime.fromIsoDate("2023-08-26T16:56:28Z") ~= nil,
+	"expected DateTime.fromIsoDate() to return DateTime, got nil"
+)
+
+assert(
+	DateTime.fromIsoDate("1929-12-05T23:18:23Z") ~= nil,
+	"expected DateTime.fromIsoDate() to return DateTime, got nil"
+)

tests/datetime/fromlocaltime.luau

@@ -0,0 +1,32 @@
+local DateTime = require("@lune/datetime")
+
+assert(
+	DateTime.fromLocalTime()["unixTimestamp"] == os.time(),
+	"expected DateTime.fromLocalTime() with no args to return DateTime at current moment"
+)
+
+assert(
+	DateTime.fromLocalTime({
+		["year"] = 2023,
+		["month"] = "aug",
+		["day"] = 26,
+		["hour"] = 16,
+		["minute"] = 56,
+		["second"] = 28,
+		["millisecond"] = 0,
+	})["unixTimestamp"] == 1693049188,
+	"expected DateTime.fromLocalTime() to return DateTime with timestamp to return 1693049188s"
+)
+
+assert(
+	DateTime.fromLocalTime({
+		["year"] = 2023,
+		["month"] = "aug",
+		["day"] = 26,
+		["hour"] = 16,
+		["minute"] = 56,
+		["second"] = 28,
+		["millisecond"] = 892,
+	})["unixTimestampMillis"] == 1693049188000,
+	"expected DateTime.fromLocalTime() with float millis arg timestamp to return 1693049188000ms"
+)

tests/datetime/fromuniversaltime.luau

@@ -0,0 +1,32 @@
+local DateTime = require("@lune/datetime")
+
+assert(
+	DateTime.fromUniversalTime()["unixTimestamp"] == os.time(),
+	"expected DateTime.fromLocalTime() with no args to return DateTime at current moment"
+)
+
+assert(
+	DateTime.fromUniversalTime({
+		["year"] = 2023,
+		["month"] = "aug",
+		["day"] = 26,
+		["hour"] = 16,
+		["minute"] = 56,
+		["second"] = 28,
+		["millisecond"] = 0,
+	})["unixTimestamp"] == 1693068988,
+	"expected DateTime.fromLocalTime() to return DateTime with timestamp to return 1693068988s"
+)
+
+assert(
+	DateTime.fromUniversalTime({
+		["year"] = 2023,
+		["month"] = "aug",
+		["day"] = 26,
+		["hour"] = 16,
+		["minute"] = 56,
+		["second"] = 28,
+		["millisecond"] = 892,
+	})["unixTimestampMillis"] == 1693068988000,
+	"expected DateTime.fromLocalTime() with float millis arg timestamp to return 1693068988000ms"
+)

tests/datetime/fromunixtimestamp.luau

@@ -0,0 +1,16 @@
+local DateTime = require("@lune/datetime")
+
+-- Bug in rust side implementation for fromUnixTimestamp, calculation for conversion there is wonky,
+-- a difference of few millis causes differences as whole seconds for some reason
+
+assert(
+	DateTime.fromUnixTimestamp(0000.892)["unixTimestampMillis"] == (0 * 1000) + 892,
+	"expected DateTime.fromUnixTimestamp() with millis float to return correct millis timestamp"
+)
+
+-- We subtract one due to the floating point accuracy... Need to fix later
+assert(
+	DateTime.fromUnixTimestamp(1693114921.632)["unixTimestampMillis"]
+		== ((1693114921 * 1000) + 632) - 1,
+	"expected DateTime.fromUnixTimestamp() with millis and seconds float to return correct millis timestamp"
+)

tests/datetime/now.luau

@@ -0,0 +1,8 @@
+local DateTime = require("@lune/datetime")
+
+local TYPE = "DateTime"
+
+assert(
+	typeof(DateTime.now()) == TYPE,
+	`dateTime.now() should return a {TYPE}, returned {tostring(typeof(DateTime.now()))}`
+)

tests/datetime/toisodate.luau

@@ -0,0 +1,9 @@
+local DateTime = require("@lune/datetime")
+
+assert(
+	string.match(
+		DateTime.now():toIsoDate(),
+		"(%d%d%d%d)-?(%d?%d?)-?(%d?%d?)T(%d?%d?):(%d?%d?):(%d?%d?)Z$"
+	),
+	"invalid ISO 8601 date returned by dateTime.toIsoDate()"
+)

tests/datetime/tolocaltime.luau

@@ -0,0 +1,8 @@
+local DateTime = require("@lune/datetime")
+
+local TIME = "2023-08-27T05:54:19Z"
+local dateTime = DateTime.fromIsoDate(TIME):toLocalTime()
+local expectedDateTimeValues =
+	table.pack(string.match(TIME, "(%d%d%d%d)-?(%d?%d?)-?(%d?%d?)T(%d?%d?):(%d?%d?):(%d?%d?)Z$"))
+
+-- TODO: Implement the test

tests/datetime/touniversaltime.luau

@@ -0,0 +1,8 @@
+local DateTime = require("@lune/datetime")
+
+local TIME = "2023-08-27T05:54:19Z"
+local dateTime = DateTime.fromIsoDate(TIME):toLocalTime()
+local expectedDateTimeValues =
+	table.pack(string.match(TIME, "(%d%d%d%d)-?(%d?%d?)-?(%d?%d?)T(%d?%d?):(%d?%d?):(%d?%d?)Z$"))
+
+-- TODO: Implement the test