Clock class Null safety

A provider for the "current time" and points relative to the current time.

This class is designed with testability in mind. The current point in time (or now()) is defined by a function that returns a DateTime. By supplying your own time function or using new Clock.fixed, you can control exactly what time a Clock returns and base your test expectations on that.

Most users should use the top-level clock field, which provides access to a default implementation of Clock which can be overridden using withClock.

Constructors

Clock([DateTime currentTime() = systemTime])
Creates a clock based on the given currentTime, or on the system clock by default.
const
Clock.fixed(DateTime time)
Creates Clock that always considers the current time to be time.

Properties

hashCode → int
The hash code for this object.
read-onlyinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

ago({int days = 0, int hours = 0, int minutes = 0, int seconds = 0, int milliseconds = 0, int microseconds = 0}) → DateTime
Returns the point in time that's given amount of time ago.
agoBy(Duration duration) → DateTime
Returns the point in time Duration amount of time ago.
daysAgo(int days) → DateTime
Return the point in time days ago.
daysFromNow(int days) → DateTime
Return the point in time days from now.
fromNow({int days = 0, int hours = 0, int minutes = 0, int seconds = 0, int milliseconds = 0, int microseconds = 0}) → DateTime
Returns the point in time that's given amount of time from now.
fromNowBy(Duration duration) → DateTime
Returns the point in time Duration amount of time from now.
getStopwatch() → Stopwatch
Returns a new stopwatch that uses the current time as reported by this.
Deprecated('Use stopwatch() instead.')">@Deprecated('Use stopwatch() instead.')
hoursAgo(int hours) → DateTime
Return the point in time hours ago.
hoursFromNow(int hours) → DateTime
Return the point in time hours from now.
microsAgo(int microseconds) → DateTime
Return the point in time microseconds ago.
microsFromNow(int microseconds) → DateTime
Return the point in time microseconds from now.
millisAgo(int milliseconds) → DateTime
Return the point in time milliseconds ago.
millisFromNow(int milliseconds) → DateTime
Return the point in time milliseconds from now.
minutesAgo(int minutes) → DateTime
Return the point in time minutes ago.
minutesFromNow(int minutes) → DateTime
Return the point in time minutes from now.
monthsAgo(int months) → DateTime
Return the point in time months ago on the same date.
monthsFromNow(int months) → DateTime
Return the point in time months from now on the same date.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
now() → DateTime
Returns current time.
secondsAgo(int seconds) → DateTime
Return the point in time seconds ago.
secondsFromNow(int seconds) → DateTime
Return the point in time seconds from now.
stopwatch() → Stopwatch
Returns a new stopwatch that uses the current time as reported by this.
toString() → String
A string representation of this object.
inherited
weeksAgo(int weeks) → DateTime
Return the point in time weeks ago.
weeksFromNow(int weeks) → DateTime
Return the point in time weeks from now.
yearsAgo(int years) → DateTime
Return the point in time years ago on the same date.
yearsFromNow(int years) → DateTime
Return the point in time years from now on the same date.

Operators

operator ==(Object other) → bool
The equality operator.
inherited