object Assert extends Object with Assert
Assert Singleton
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- @native() @JSImport("assert", JSImport.Namespace)
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- Assert
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Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##(): Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def addListener(eventName: String, listener: Function): Assert.this.type
Alias for emitter.on(eventName, listener).
Alias for emitter.on(eventName, listener).
- Definition Classes
- IEventEmitter
emitter.addListener(eventName, listener)
- See also
on()
Example: - def apply(expression: Any, message: String = js.native): Unit
An alias of assert.ok() .
An alias of assert.ok() .
- expression
the expression to evaluate
- Definition Classes
- Assert
assert(value[, message])
Example: - final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
- def deepStrictEqual(actual: Any, expected: Any, message: String = js.native): Unit
Generally identical to assert.deepEqual() with two exceptions.
Generally identical to assert.deepEqual() with two exceptions. First, primitive values are compared using the strict equality operator ( === ). Second, object comparisons include a strict equality check of their prototypes.
- Definition Classes
- Assert
assert.deepStrictEqual(actual, expected[, message])
Example: - def doesNotThrow(block: Function, error: |[RegExp, Function] = js.native, message: String = js.native): Unit
Asserts that the function block does not throw an error.
Asserts that the function block does not throw an error. See assert.throws() for more details. When assert.doesNotThrow() is called, it will immediately call the block function. If an error is thrown and it is the same type as that specified by the error parameter, then an AssertionError is thrown. If the error is of a different type, or if the error parameter is undefined, the error is propagated back to the caller.
- Definition Classes
- Assert
assert.doesNotThrow(block[, error][, message])
Example: - val domain: String
- Definition Classes
- IEventEmitter
- def emit(name: String, args: Any*): Boolean
Synchronously calls each of the listeners registered for the event named eventName, in the order they were registered, passing the supplied arguments to each.
Synchronously calls each of the listeners registered for the event named eventName, in the order they were registered, passing the supplied arguments to each.
Returns true if the event had listeners, false otherwise.
- name
the event name
- args
the event arguments
- Definition Classes
- IEventEmitter
emitter.emit(name[, arg1][, arg2][, ...])
Example: - final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def eventNames(): Array[String]
- Definition Classes
- IEventEmitter
- def fail(message: scala.scalajs.js.Error): Unit
- Definition Classes
- Assert
- See also
https://nodejs.org/api/assert.html#assert_assert_fail_message
- def fail(message: String): Unit
- Definition Classes
- Assert
- See also
https://nodejs.org/api/assert.html#assert_assert_fail_message
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def getMaxListeners(): Int
Returns the current max listener value for the EventEmitter which is either set by emitter.setMaxListeners(n) or defaults to EventEmitter.defaultMaxListeners.
Returns the current max listener value for the EventEmitter which is either set by emitter.setMaxListeners(n) or defaults to EventEmitter.defaultMaxListeners.
- Definition Classes
- IEventEmitter
emitter.getMaxListeners()
- See also
setMaxListeners()
Example: - def hasOwnProperty(v: String): Boolean
- Definition Classes
- Object
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def ifError(value: Any): Unit
Throws value if value is truthy.
Throws value if value is truthy. This is useful when testing the error argument in callbacks.
- Definition Classes
- Assert
assert.ifError(value)
Example: - final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- def isPrototypeOf(v: Object): Boolean
- Definition Classes
- Object
- def listenerCount(eventName: String): Int
Returns the number of listeners listening to the event named eventName.
Returns the number of listeners listening to the event named eventName.
- Definition Classes
- IEventEmitter
emitter.listenerCount(eventName)
Example: - def listeners(eventName: String): Array[Function]
Returns a copy of the array of listeners for the event named eventName.
Returns a copy of the array of listeners for the event named eventName.
- Definition Classes
- IEventEmitter
emitter.listeners(eventName)
Example: - final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def notDeepStrictEqual(actual: Any, expected: Any, message: String = js.native): Unit
Tests for deep strict inequality.
Tests for deep strict inequality. Opposite of assert.deepStrictEqual().
- Definition Classes
- Assert
assert.notDeepStrictEqual(actual, expected[, message])
Example: - def notStrictEqual(actual: Any, expected: Any, message: String = js.native): Unit
Tests strict inequality as determined by the strict not equal operator ( !== ).
Tests strict inequality as determined by the strict not equal operator ( !== ).
- Definition Classes
- Assert
assert.notStrictEqual(actual, expected[, message])
Example: - final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native() @HotSpotIntrinsicCandidate()
- def ok(value: Any, message: String = js.native): Unit
Tests if value is truthy.
Tests if value is truthy. It is equivalent to assert.equal(!!value, true, message). If value is not truthy, an AssertionError is thrown with a message property set equal to the value of the message parameter. If the message parameter is undefined, a default error message is assigned.
- Definition Classes
- Assert
- def on(eventName: String, listener: Function): Assert.this.type
Adds the listener function to the end of the listeners array for the event named eventName.
Adds the listener function to the end of the listeners array for the event named eventName. No checks are made to see if the listener has already been added. Multiple calls passing the same combination of eventName and listener will result in the listener being added, and called, multiple times.
Returns a reference to the EventEmitter so calls can be chained.
- Definition Classes
- IEventEmitter
emitter.on(eventName, listener)
Example: - def once(eventName: String, listener: Function): Assert.this.type
Adds a one time listener function for the event named eventName.
Adds a one time listener function for the event named eventName. This listener is invoked only the next time eventName is triggered, after which it is removed.
- Definition Classes
- IEventEmitter
emitter.once(eventName, listener)
Example: - def prependListener(eventName: String, listener: Function): Assert.this.type
- Definition Classes
- IEventEmitter
- def prependOnceListener(eventName: String, listener: Function): Assert.this.type
- Definition Classes
- IEventEmitter
- def propertyIsEnumerable(v: String): Boolean
- Definition Classes
- Object
- def removeAllListeners(eventName: String = js.native): Assert.this.type
Removes all listeners, or those of the specified eventName.
Removes all listeners, or those of the specified eventName.
Note that it is bad practice to remove listeners added elsewhere in the code, particularly when the EventEmitter instance was created by some other component or module (e.g. sockets or file streams).
Returns a reference to the EventEmitter so calls can be chained.
- Definition Classes
- IEventEmitter
emitter.removeAllListeners([eventName])
Example: - def removeListener(eventName: String, listener: Function): Assert.this.type
Removes the specified listener from the listener array for the event named eventName.
Removes the specified listener from the listener array for the event named eventName. removeListener will remove, at most, one instance of a listener from the listener array. If any single listener has been added multiple times to the listener array for the specified eventName, then removeListener must be called multiple times to remove each instance.
Note that once an event has been emitted, all listeners attached to it at the time of emitting will be called in order. This implies that any removeListener() or removeAllListeners() calls after emitting and before the last listener finishes execution will not remove them from emit() in progress. Subsequent events will behave as expected.
- Definition Classes
- IEventEmitter
emitter.removeListener(eventName, listener)
Example: - def setMaxListeners(n: Int): Assert.this.type
By default EventEmitters will print a warning if more than 10 listeners are added for a particular event.
By default EventEmitters will print a warning if more than 10 listeners are added for a particular event. This is a useful default that helps finding memory leaks. Obviously, not all events should be limited to just 10 listeners. The emitter.setMaxListeners() method allows the limit to be modified for this specific EventEmitter instance. The value can be set to Infinity (or 0) for to indicate an unlimited number of listeners.
Returns a reference to the EventEmitter so calls can be chained.
- Definition Classes
- IEventEmitter
emitter.setMaxListeners(n)
Example: - def strictEqual(actual: Any, expected: Any, message: String = js.native): Unit
Tests strict equality as determined by the strict equality operator ( === ).
Tests strict equality as determined by the strict equality operator ( === ).
- Definition Classes
- Assert
assert.strictEqual(actual, expected[, message])
Example: - final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def throws(block: Function, error: |[|[|[RegExp, Function], Object], Error], message: String = js.native): Unit
If the values are not strictly equal, an AssertionError is thrown with a message property set equal to the value of the message parameter.
If the values are not strictly equal, an AssertionError is thrown with a message property set equal to the value of the message parameter. If the message parameter is undefined, a default error message is assigned.
- Definition Classes
- Assert
assert.throws(block[, error][, message])
Example: - def toLocaleString(): String
- Definition Classes
- Object
- def toString(): String
- Definition Classes
- AnyRef → Any
- val usingDomains: Boolean
- Definition Classes
- IEventEmitter
- def valueOf(): Any
- Definition Classes
- Object
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
Deprecated Value Members
- def fail(actual: Any, expected: Any, message: String, operator: String): Unit
- Definition Classes
- Assert
- Annotations
- @deprecated
- Deprecated
(Since version Node.js v10.0.0) Use assert.fail([message]) or other assert functions instead.
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated @deprecated
- Deprecated
(Since version ) see corresponding Javadoc for more information.