junit5 - What's the equivalent of org.junit.runner.JUnitCore.runClasses in Junit 5? -

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the following code started in junit4 , has been translated junit5 except main(). reason i'm writing way i'm demonstrating tdd , have multiple versions of stringinverter implementation, each of implements more features , passes more tests. here stringinverter interface:

interface stringinverter {   public string invert(string str); }

and here's almost-compiling-with-junit5 class:

import java.util.*; import org.junit.jupiter.api.*; import static org.junit.jupiter.api.assertions.*; import org.junit.platform.runner.junitplatform;  public class stringinvertertest {   static stringinverter inverter;   @test   public final void basicinversion_succeed() {     string in = "exit, pursued bear.";     string out = "exit, pursued bear.";     assertequals(inverter.invert(in), out);   }   @test   public final void basicinversion_fail() {     expectthrows(runtimeexception.class, () -> {       assertequals(inverter.invert("x"), "x");     });   }   @test   public final void allowedcharacters_fail() {     expectthrows(runtimeexception.class, () -> {       inverter.invert(";-_()*&^%$#@!~`");       inverter.invert("0123456789");     });   }   @test   public final void allowedcharacters_succeed() {     inverter.invert("abcdefghijklmnopqrstuvwxyz ,.");     inverter.invert("abcdefghijklmnopqrstuvwxyz ,.");   }   @test   public final void lengthlessthan26_fail() {     string str = "xxxxxxxxxxxxxxxxxxxxxxxxxx";     asserttrue(str.length() > 25);     expectthrows(runtimeexception.class, () -> {       inverter.invert(str);     });   }   @test   public final void lengthlessthan26_succeed() {     string str = "xxxxxxxxxxxxxxxxxxxxxxxxx";     asserttrue(str.length() < 26);     inverter.invert(str);   }   public static void main(string[] args) throws exception{     assertequals(args.length, 1);     inverter = (stringinverter)       class.forname(args[0]).newinstance();     result result = org.junit.runner.junitcore.runclasses(       stringinvertertest.class);     list<failure> failures = result.getfailures();     system.out.printf("%s has %d failures:\n",       args[0], failures.size());     int count = 1;     for(failure f : failures) {       system.out.printf("failure %d:\n", count++);       system.out.println(f.getdescription());       system.out.println(f.getmessage());     }   } }

main() worked junit4, question how convert junit 5. thanks!

junit5 has launcher api in junit-platform-launcher module programmatic test discovery , execution.

detailed example documented on user guide chapter7.


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