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Using Assertions

Scalatest.org   DA: 17 PA: 28 MOZ Rank: 45

  • ScalaTest makes three assertions available by default in any style trait
  • You can use: assert for general assertions; assertResult to differentiate expected from actual values; assertThrows to ensure a bit of code throws an expected exception
  • To get moving quickly in ScalaTest, learn and use these three assertions.

Org.scalatest.Assertions

Doc.scalatest.org   DA: 17 PA: 34 MOZ Rank: 52

  • Trait that contains ScalaTest's basic assertion methods
  • You can use the assertions provided by this trait in any ScalaTest Suite, because Suite mixes in this trait
  • This trait is designed to be used independently of anything else in ScalaTest, though, so you can mix it into anything.

Scala Examples Of Org.scalatest.Assertions

Programcreek.com   DA: 20 PA: 31 MOZ Rank: 53

  • The following examples show how to use org.scalatest.Assertions
  • These examples are extracted from open source projects
  • You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example
  • package org.apache.spark.serializer import java.io

Trait Assertions In Org.scalatest

Doc.scalatest.org   DA: 17 PA: 34 MOZ Rank: 54

def assert(o: scala.Option[java.lang.String], clue: Any) : Unit Assert that an Option[String] is None.If the condition is None, this method returns normally.Else, it throws TestFailedException with the String value of the Some, as well as the String obtained by invoking toString on the specified message, included in the TestFailedException's detail message.

Asynchronous Testing

Scalatest.org   DA: 17 PA: 25 MOZ Rank: 46

  • ScalaTest supports asynchronous non-blocking testing
  • Given a Future returned by the code you are testing, you need not block until the Future completes before performing assertions against its value
  • You can instead map those assertions onto the Future and return the resulting Future[Assertion] to ScalaTest
  • The test will complete asynchronously, when the Future

Using ScalaTest With Sbt Scala Book Scala Documentation

Docs.scala-lang.org   DA: 19 PA: 44 MOZ Rank: 68

  • You create tests as shown, by giving each test a unique name; At the end of each test you should call assert to test that a condition has been satisfied; Using ScalaTest like this is similar to JUnit, so if you’re coming to Scala from Java, hopefully this looks very familiar
  • Now you can run these tests with the sbt test command

Scala Testing With Scalatest: Reference And Examples

Queirozf.com   DA: 12 PA: 50 MOZ Rank: 68

  • run $ sbt test on the project root
  • Unless otherwise stated, we're using Scalatest 3.x and SBT 1.2.x (all examples can be found here)
  • Scalatest is just one among many testing libraries for scala but it's quite complete and a lot of people use it so it's a good choice for starting out with.
  • Scalatest support many different testing styles under the same testing framework, for

Scala Assert

Jianshu.com   DA: 15 PA: 15 MOZ Rank: 37

  • Scala里,断言对预定义方法 assert 的调用。
  • 表达式 assert (condition) 将在condition条件不成立的时候抛出 AssertionError。
  • assert也可带两个参数,表达式assert (condition, explanation) 会测试condition,如果条件不成立,会抛出含有指定explanation作为说明的AssertionError。

How To Test Your Spark Scala Code By Alexander Osipenko

Towardsdatascience.com   DA: 22 PA: 47 MOZ Rank: 77

  • Save a small data sample inside your repository, if your sample very small, like 1–2 columns small
  • Generate data on the go as part of your test, basically have your test data hardcoded inside scala code
  • Save sample data in some remote bucket and load it during the tests
  • Finally, you can query your sample data from the database.

Scala Testing With ScalaTest: Test Styles For Beginners

Blog.rockthejvm.com   DA: 19 PA: 26 MOZ Rank: 54

  • This beginner-friendly article introduced the various testing styles of Scala with ScalaTest
  • We learned how we can define independent tests, how to create nested tests in different styles, how to use Scala’s expressiveness to write DSL-like tests, plus some wonky things at the end
  • Enjoy Scala testing! Tags: scala, testing

Unit Testing Spark Scala Code

Paschen.ch   DA: 14 PA: 39 MOZ Rank: 63

  • I use them even in single-person projects, because I like being able to double-check my own logic, and because it’s less effort to run a couple tests than to remember the way my code interacts with my other code every time I make a change.

NonImplicitAssertions

Doc.scalatest.org   DA: 17 PA: 48 MOZ Rank: 76

  • Throws TestPendingException to indicate a test is pending.
  • A pending test is one that has been given a name but is not yet implemented
  • The purpose of pending tests is to facilitate a style of testing in which documentation of behavior is sketched out before tests are written to verify that behavior (and often, the before the behavior of the system being tested is itself implemented).

Scala Examples Of Org.junit.Assert.assertEquals

Programcreek.com   DA: 20 PA: 36 MOZ Rank: 68

  • The following examples show how to use org.junit.Assert.assertEquals.These examples are extracted from open source projects
  • You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

Unit Testing

Stackoverflow.com   DA: 17 PA: 50 MOZ Rank: 80

  • If you want to check if both the data frames are equal or not for testing purpose, you can make use of subtract () method of data frame (supported in version 1.3 and above) You can check if diff of both data frames is empty or 0
  • df1.subtract (df2).count () == 0

Testing Scala With Scalatest

Mungingdata.com   DA: 15 PA: 17 MOZ Rank: 46

  • MUnit is a Scala testing library with actionable errors and extensible APIs
  • It offers a set of features that are not available in any other Scala testing libraries
  • MUnit is “heavily inspired by existing testing libraries including ScalaTest, utest, JUnit and ava” and combines a bunch of features in a unique way for a Scala testing library.

Introduction To Testing With ScalaTest Baeldung On Scala

Baeldung.com   DA: 16 PA: 16 MOZ Rank: 47

  • ScalaTest is one of the most popular, complete and easy-to-use testing frameworks in the Scala ecosystem
  • Where ScalaTest differs from other testing tools is its ability to support a number of different testing styles such as XUnit and BDD out of the box
  • In this introductory tutorial, we’ll start by creating our first test

Scala Examples Of Org.scalatest.exceptions.TestFailedException

Programcreek.com   DA: 20 PA: 50 MOZ Rank: 86

package org.bitcoins.testkit import org.scalacheck.Gen import scala.annotation.tailrec import org.scalatest.compatible.Assertion import org.scalatest.exceptions.TestFailedException def toAssertion: Assertion = assertions match { case Seq() => throw new TestFailedException( message = "Cannot turn an empty list into an assertion

Scala Examples Of Org.scalatest.mockito.MockitoSugar

Programcreek.com   DA: 20 PA: 41 MOZ Rank: 78

  • The following examples show how to use org.scalatest.mockito.MockitoSugar.These examples are extracted from open source projects
  • You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

Writing Assertions · MUnit

Scalameta.org   DA: 13 PA: 27 MOZ Rank: 58

  • MUnit provides a few ways to fail a test given a condition
  • assert() Use assert() to fail a test if a boolean condition does not hold true
  • For example, assume we have two values: assertion failed // at munit.Assertions.fail(Assertions.scala:290) // at munit.Assertions.fail$(Assertions.scala:284) // at munit.FunSuite.fail(FunSuite.scala:11)

Writing BDD Style Tests With ScalaTest And Sbt Scala

Docs.scala-lang.org   DA: 19 PA: 44 MOZ Rank: 82

  • ScalaTest also supports a Behavior-Driven Development (BDD) style of testing, which we’ll demonstrate next
  • This lesson uses the same sbt project as the previous lesson, so you don’t have to go through the initial setup work again
  • First, create a new Scala class to test.

What Is Assert In Scala

Askinglot.com   DA: 13 PA: 24 MOZ Rank: 57

  • Hereof, what is Scala test? ScalaTest is the most flexible and most popular testing tool in the Scala ecosystem
  • With ScalaTest, you can test Scala, Scala
  • how do you assert in Java? assert is a Java keyword used to define an assert statement.

Scala: Debugging And Unit Testing By Alex Heres Medium

Medium.com   DA: 10 PA: 50 MOZ Rank: 81

  • The test function allows us to collect results from the assert statements in the function body
  • Getting Started with ScalaTest Let’s create a simple scala program to calculate the square of a

Std Lib Asserts

Scala-exercises.org   DA: 23 PA: 16 MOZ Rank: 61

  • assertResult to differentiate expected from actual values; intercept to ensure a bit of code throws an expected exception
  • In any Scala program, you can write assertions by invoking assert and passing in a Boolean expression: val left = 2 val right = 1 assert (left == right) If the passed expression is true, assert will return normally.

Scala Examples Of Org.junit.Test

Programcreek.com   DA: 20 PA: 21 MOZ Rank: 64

  • The following examples show how to use org.junit.Test
  • These examples are extracted from open source projects
  • You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file …

Code Examples For Programming In Scala

Cs.helsinki.fi   DA: 18 PA: 44 MOZ Rank: 86

14 Assertions and Unit Testing; 14.1 Assertions; 14.2 Unit testing in Scala; 14.3 Informative failure reports; 14.4 Using JUnit and TestNG; 14.5 Tests as specifications; 14.6 Property-based testing; 14.7 Organizing and running tests; 14.8 Conclusion; 14.1 Assertions

Testing Actor Systems (Scala) — Akka Documentation

Doc.akka.io   DA: 11 PA: 33 MOZ Rank: 69

  • When the dispatcher invokes the processing behavior of an actor on a message, it actually calls apply on the current behavior registered for the actor
  • This starts out with the return value of the declared receive method, but it may also be changed using become and unbecome in response to external messages
  • All of this contributes to the overall actor behavior and

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