Project Contains Errors. Automated Testing Not Possible!!

Mon Dec 17 00:45:23 CET 2018
Buildfile: /Volumes/data/fontys/modules/alda/2018/practical_students/doc/aldabuild.xml

compile:
    [javac] Compiling 7 source files to /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/build/classes
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:2: error: package org.junit does not exist
    [javac] import static org.junit.Assert.assertTrue;
    [javac]                        ^
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:2: error: static import only from classes and interfaces
    [javac] import static org.junit.Assert.assertTrue;
    [javac] ^
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:3: error: package org.junit.jupiter.api does not exist
    [javac] import static org.junit.jupiter.api.Assertions.*;
    [javac]                                    ^
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:7: error: package org.junit.jupiter.api does not exist
    [javac] import org.junit.jupiter.api.Test;
    [javac]                             ^
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:17: error: cannot find symbol
    [javac] 	@Test
    [javac] 	 ^
    [javac]   symbol:   class Test
    [javac]   location: class SortingTests
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:29: error: cannot find symbol
    [javac] 		assertTrue(sorted.get()==976&&sorted.invert().get()==0); //Check that the lowest element is 0 and highest 976
    [javac] 		^
    [javac]   symbol:   method assertTrue(boolean)
    [javac]   location: class SortingTests
    [javac] /Volumes/data/fontys/modules/alda/2018/practical_students/g15/trunk/02_sorting/Sorting/src/Test/SortingTests.java:32: error: cannot find symbol
    [javac] 		assertTrue(sorted2.get()==9&&sorted2.invert().get()==0); //Check that the lowest element is 0 and highest 9
    [javac] 		^
    [javac]   symbol:   method assertTrue(boolean)
    [javac]   location: class SortingTests
    [javac] 7 errors