In my first post on learning Scala I mentioned using ScalaTest. I’m going to walk through the steps (using IntelliJ community edition) to get up and running with ScalaTest as it’s a great way to try things out (ofourse you could alternatively use the Scala console).<\/p>\n
Upon finishing the new project wizard, you’ll get a standard layout of folders, as follows<\/p>\n
src\/main\/scala
\nsrc\/test\/scala<\/p>\n
In the root of the project you’ll get a build.sbt file. This is the Scala build system<\/a>. If we open it, IntelliJ has supplied the bare minimum <\/p>\n Before we do anything more let’s go into src\/main\/scala, right mouse click on the folder and select New Scala class. Give it the name Calculator, here’s the code<\/p>\n Now, go back to the build.sbt file and add the following<\/p>\n When the build.sbt file was changed you’ll see it asking you to Refresh the Project, Enable auto-import or Ignore. I clicked Enable auto-import.<\/p>\n This will then import more Extendal Libraries (if you want to see what was imported, expand the External Libraries in the project view alt+1, if not already displayed)<\/p>\n Now, we could have done this in one step (but I wanted to demonstrate how the external libraries get added to), but now add the following<\/p>\n further external libraries will get imported if you refresh (or if auto-import is enabled, after a moment). These now include scalatest.<\/p>\n We’re going to let IntelliJ create our initial unit test fixture. To ensure everything is in place, carry out the following steps<\/p>\n Or if you’re happy all is ready then…<\/p>\n You’ll now be placed into the newly added CalculatorTest class and it’ll look like this<\/p>\n From here we can write our test code and further tests.<\/p>\n Like other test frameworks we now have access to assert functions, so for example we can have the testAdd look like this<\/p>\n org.scalatest contains a whole bunch of assert functions that we can use in our tests. <\/p>\n ScalaTest is not the only scala based test library<\/p>\n References<\/strong><\/p>\n Working with Scala Tests<\/a> In my first post on learning Scala I mentioned using ScalaTest. I’m going to walk through the steps (using IntelliJ community edition) to get up and running with ScalaTest as it’s a great way to try things out (ofourse you could alternatively use the Scala console). Create a new project Select Scala and SBT Give […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[165,166],"tags":[],"class_list":["post-4743","post","type-post","status-publish","format-standard","hentry","category-scala","category-scalatest"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/comments?post=4743"}],"version-history":[{"count":8,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4743\/revisions"}],"predecessor-version":[{"id":4782,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4743\/revisions\/4782"}],"wp:attachment":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/media?parent=4743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/categories?post=4743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/tags?post=4743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\r\nname := "Demo"\r\nversion := "1.0"\r\nscalaVersion := "2.12.1"\r\n<\/pre>\n
\r\nclass Calculator {\r\n def add(a: Int, b: Int) = {\r\n a + b\r\n }\r\n\r\n def subtract(a: Int, b: Int ) = {\r\n a - b\r\n }\r\n}\r\n<\/pre>\n\r\nlibraryDependencies += "org.scalactic" %% "scalactic" % "3.0.1"\r\n<\/pre>\n
\r\nlibraryDependencies += "org.scalatest" %% "scalatest" % "3.0.1" % "test"\r\n<\/pre>\n
\n
\n
\r\nimport org.scalatest.FunSuite\r\n\r\nclass CalculatorTest extends FunSuite {\r\n\r\n test("testAdd") {\r\n }\r\n\r\n test("testSubtract") {\r\n }\r\n}\r\n<\/pre>\n\r\ntest("testAdd") {\r\n val calc = new Calculator\r\n \r\n assert(calc.add(1, 2) == 3)\r\n }\r\n<\/pre>\n
\nScalaTest<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"