2022-csta

1. Introduction to Unit testing with Codecheck.io and Junit

Let’s work on this together!

Step	Instructions
Complete a Codecheck.io	<ol><li>Complete https://codecheck.io/files/22071124088wj28phd2wb49lg83v4ztq8qe <li>Download and examine codecheck.signed.zip.
Generate a codecheck.zip	<ol><li>Using codecheck.sh or codecheck.bat, create a codecheck.zip file.
Create your own Codecheck.io	<ol><li>Follow the instructions on Codecheck.io to the upload link and upload codecheck.zip.

Documentation

• https://junit.org/junit4/javadoc/latest/ is the Junit 4 Javadoc documentation. The Assert class is where most of the testing happens.
• https://horstmann.com/codecheck/authoring.html is the Codecheck.io documentation. Two important references are summary of file conventions and glossary of pseudocomments.

Codecheck.io Files

The files in the directory are as follows (not all files are included in codecheck.zip):

File	Instructions
CodecheckCube.java	Java source file (see problem).
CodecheckMain.java	Java source file (see problem).
CodecheckSquare.java	Java source file (see problem).
CodecheckTest.java	Java source file (see problem).
CodecheckTester.java	Java source file (see problem).
CodecheckUnit.java	Java source file (see problem).
Feedback.java	Java source file to format unit test feedback.
Format.java	Java source file to format generated unit-test data.
Generate.java	A Java source file that generates unit-test data.
codecheck.bat	Script to create codecheck.zip.
codecheck.sh	Script to create codecheck.zip.
codecheck.zip	File created by codecheck.bat or codecheck.sh scritps.
problem.html	HTML version of problem statement. Is included in codecheck.zip.
problem.md	GFM version of problem statement used to generate HTML version (also included to work with repl.it.
test.in	Text file with program input (see problem).
zipfiles.txt	Test file that contains names of all files to include in coecheck.zip.

Solution

Possible missing code from CodecheckTest.java is below.

    @Test
    public void testSquares() {
        System.out.printf("%s\n", Feedback.formatBanner("testSquares"));
        for (int i = 0; i < squares.length; i++) {
            int n = squares[i][0], nSquared = squares[i][1];
            System.out.printf("square(%s) \u2192 %s\n",
                n, CodecheckSquare.square(n));
//HIDE
            Assert.assertEquals(String.format("square(%s)", n),
                 nSquared, CodecheckSquare.square(n));
            //EDIT // Use a method from the Assert class to perform the test.
            }
    }

    @Test
    public void testCubes() {
        System.out.printf("%s\n", Feedback.formatBanner("testCubes"));
        for (int i = 0; i < cubes.length; i++) {
            int n = cubes[i][0], nCubed = cubes[i][1];
            System.out.printf("cube(%s) \u2192 %s\n",
                n, CodecheckCube.cube(n));
//HIDE
            Assert.assertEquals(String.format("cube(%s)", n),
                nCubed, CodecheckCube.cube(n));
            //EDIT // Use a method from the Assert class to perform the test.
        }
    }

(Solutions to CodecheckCube.java and CodecheckSquare.java are not provided!)

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