Execute a Test Runner from Command Prompt, Terminal

In c# the following command will run the tests in the command prompt. Please ensure you have required version of .net installed.

dotnet test

Mircrosoft .net command line execution can have the extra key features of:

• Blame: debug why test runner itself crashing.
• Verbosity: Varying degree of output from your tests.
• Path: To the directory that holds your tests.
• No build: Allows you to test old builds.
• Results Directory: A directory where you can save and review test results.

The official Microsoft test page https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-test. Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

dotnet test -h

In Golang the following command will run the tests in the command prompt. Please ensure you have required version of Go installed.

go test

GoLang command line execution can have the extra key features of:

• parallel: allows you to run test in parallel making execution faster
• failfast: exit the test execution on the first test fail
• shuffle: randomise the execution order of the tests
• race: race condition detection

The official GoLang test page https://pkg.go.dev/cmd/go/internal/test#pkg-index . Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

go help test

Java is a widely used language and many different flavours of build automation tools such as Maven and Gradle. Lets explore these as well as how to do it using a vanilla build without these tools.

mvn clean test

gradle test

# in java first compile and then run tests.
javac -d /[pathToClasses]/classes -cp /[pathToClasses/junit-4.12.jar /[pathToClasses]/[TestClassName].java

# run the Tests
4.12.jar:/[pathToCompiledClasses]/hamcrest-core-1.3.jar org.junit.runner.JUnitCore [package].[TestClassName]

You can see that a lot of effort has to be put into running a vanilla class without Maven or Gradle. If you can use a package manager, they will save you time and take the pain out of reference management. Including JUnit.

Gradle command line execution can have the extra key features of:

• Fail fast: Terminates when it finds a broken test.
• IgnoreFailures: Continues to build even if tests fails.
• Max Parallel Forks: Runs test in multiple processes.

The official GoLang test page https://docs.gradle.org/current/userguide/java_testing.html . Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

gradle test -h

Maven Surefire command line execution can have the extra key features of:

• Run a single test
• rerunFailingTestsCount: Reruns test for a given number of times until it either passes or fails
• debug: which allows you to step through your tests.

One key difference in this product compared to the rest is that you can set up some properties in the maven xml file such as excludes, setting environment vars etc

The official Maven test page is https://maven.apache.org/surefire/maven-surefire-plugin/ . Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

mvn test -help

Python can use the module Unittest to run unit tests. This can also be run from the command line by using the following code from inside the project directory.

python -m unittest

Python unittest command line execution can have the extra key features of:

• failfast: ends test cycle on the first test failure.
• k: matches a pattern in selecting test to run
• catch: can give an intermediate report on test run so far

The official Maven test page is https://docs.python.org/3/library/unittest.html. Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

python -m unittest -h

Angular allows you to run tests at the component level. This is great, the ability to run unit tests on javascript code. The tests themselves are driven by karma.

To run tests you would use the following command:

ng test

Angular command line execution can have the extra key features of:

• Browsers: allows you to set which browsers your test are executed against
• code coverage: get an execution report
• watch: run tests when code changes

The official Maven test page is https://angular.io/cli/test. Where you will find more interesting ways to configure your test runner.

To get the help straight in the command line, run the following code:

ng test --help