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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 … 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. What is assert in Scala? The assert macro In any Scala program, you can write assertions by invoking assert and passing in a Boolean expression, such as: val left = 2 val right = 1 assert (left == right) If the passed expression is true , assert will return normally.

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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 com.intel.analytics.bigdl.nn import com.intel 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. Skipping … Getting started with JUnit 4 and Scala. If you want to write JUnit 4 tests in Scala that you run with JUnit, you can enjoy more concise code by using ScalaTest's assertions and/or matchers. To use assertions, mix org.scalatest.junit.AssertionsForJUnit into your test class: Scala preconditions (assert, assume, require, ensuring), require (IllegalArgumentException) – Blames the caller of the method for violating the condition.

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18. onsdag den 27 januari >assert l[2] == 6;.

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Scala Example: Hello Scala. The following code example is a simple scala program. In the above code, we have created an object ScalaExample.

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When I am trying to do the same in scala: val closureContainingCodeToTest = -> myClass.myMethod(data) // or val closureContainingCodeToTest = => myClass.myMethod(data) assertThrows(classOf[MyException], closureContainingCodeToTest) I get this error: Se hela listan på alvinalexander.com Se hela listan på docs.scala-lang.org scala> import org.scalatest.matchers.should.Matchers._ import org.scalatest.matchers.should.Matchers._ scala> List.empty shouldBe empty scala> None shouldBe empty scala> Some(1) should not be empty scala> "" shouldBe empty scala> new java.util.HashMap[Int, Int] shouldBe empty scala> new { def isEmpty = true} shouldBe empty scala> Array(1, 2, 3) should not be empty scala> import org.scalatest.Assertions._ import org.scalatest.Assertions._ scala> def fn() = { //#299 | throw new IllegalStateException("illegal state") | } fn Se hela listan på alvinalexander.com Scala Unit type. The Unit type in Scala is used as a return statement for a function when no value is to be returned. Unit type can be e compared to void data type of other programming languages like Java. It is a subclass of anytype trait and is used when nothing means to return by the function. Program to illustrate the working of unit type The following examples show how to use scala.math.abs.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. Se hela listan på github.com Se hela listan på docs.scala-lang.org Scala中的require和assertrequire和assert都用于在运行时执行某些检查来验证某些条件。那么他们的差别是什么呢？ assert 这个assert宏.