Spring 2022 Update

demos/demo3/gumball-junit-lab/ver1/GumballMachine.java

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+
+public class GumballMachine
+{
+
+    private int num_gumballs;
+    private boolean has_quarter;
+
+    public GumballMachine( int size )
+    {
+        // initialise instance variables
+        this.num_gumballs = size;
+        this.has_quarter = false;
+    }
+
+    public void insertQuarter(int coin)
+    {
+        if ( coin == 25 )
+            this.has_quarter = true ;
+        else 
+            this.has_quarter = false ;
+    }
+
+    public void turnCrank()
+    {
+    	if ( this.has_quarter )
+    	{
+    		if ( this.num_gumballs > 0 )
+    		{
+    			this.num_gumballs-- ;
+    			this.has_quarter = false ;
+    			System.out.println( "Thanks for your quarter.  Gumball Ejected!" ) ;
+    		}
+    		else
+    		{
+    			System.out.println( "No More Gumballs!  Sorry, can't return your quarter." ) ;
+    		}
+    	}
+    	else 
+    	{
+    		System.out.println( "Please insert a quarter" ) ;
+    	}        
+    }
+}

demos/demo3/gumball-junit-lab/ver1/README.TXT

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+------------------------------------------------------------------------
+This is the project README file. Here, you should describe your project.
+Tell the reader (someone who does not know anything about this project)
+all he/she needs to know. The comments should usually include at least:
+------------------------------------------------------------------------
+
+PROJECT TITLE:
+PURPOSE OF PROJECT:
+VERSION or DATE:
+HOW TO START THIS PROJECT:
+AUTHORS:
+USER INSTRUCTIONS:

demos/demo3/gumball-junit-lab/ver1/package.bluej

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+#BlueJ package file
+objectbench.height=76
+objectbench.width=783
+package.editor.height=508
+package.editor.width=675
+package.editor.x=300
+package.editor.y=103
+package.numDependencies=0
+package.numTargets=1
+package.showExtends=true
+package.showUses=true
+project.charset=UTF-8
+target1.editor.height=850
+target1.editor.width=863
+target1.editor.x=579
+target1.editor.y=155
+target1.height=50
+target1.name=GumballMachine
+target1.naviview.expanded=true
+target1.showInterface=false
+target1.type=ClassTarget
+target1.typeParameters=
+target1.width=130
+target1.x=90
+target1.y=10

demos/demo3/gumball-junit-lab/ver2/README.TXT

@@ -0,0 +1,12 @@
+------------------------------------------------------------------------
+This is the project README file. Here, you should describe your project.
+Tell the reader (someone who does not know anything about this project)
+all he/she needs to know. The comments should usually include at least:
+------------------------------------------------------------------------
+
+PROJECT TITLE:
+PURPOSE OF PROJECT:
+VERSION or DATE:
+HOW TO START THIS PROJECT:
+AUTHORS:
+USER INSTRUCTIONS:

demos/demo3/gumball-junit-lab/ver2/gumball/GumballMachine.java

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+package gumball;
+
+public class GumballMachine implements IGumball
+{
+
+    private int num_gumballs;
+    private boolean has_quarter;
+
+    public GumballMachine( int size )
+    {
+        // initialise instance variables
+        this.num_gumballs = size;
+        this.has_quarter = false;
+    }
+
+    public void insertQuarter()
+    {
+        this.has_quarter = true ;
+    }
+
+    public void turnCrank()
+    {
+        if ( this.has_quarter )
+        {
+            if ( this.num_gumballs > 0 )
+            {
+                this.num_gumballs-- ;
+                this.has_quarter = false ;
+                System.out.println( "Thanks for your quarter.  Gumball Ejected!" ) ;
+            }
+            else
+            {
+                System.out.println( "No More Gumballs!  Sorry, can't return your quarter." ) ;
+            }
+        }
+        else 
+        {
+            System.out.println( "Please insert a quarter" ) ;
+        }        
+    }
+
+     public boolean hasGumball() 
+     {
+         return true ;
+     }
+}

demos/demo3/gumball-junit-lab/ver2/gumball/GumballStub.java

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+package gumball;
+
+
+/**
+ * Write a description of class GumballStub here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class GumballStub implements IGumball
+{
+
+    public void insertQuarter() {}
+    public void turnCrank() {}
+    public boolean hasGumball() { return true; }
+}

demos/demo3/gumball-junit-lab/ver2/gumball/IGumball.java

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+package gumball;
+
+
+/**
+ * Write a description of interface IGumball here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public interface IGumball
+{
+
+    public void insertQuarter() ;
+    public void turnCrank() ;
+    public boolean hasGumball() ;
+}

demos/demo3/gumball-junit-lab/ver2/gumball/Kid.java

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+package gumball;
+
+
+/**
+ * Write a description of class Kid here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+public class Kid
+{
+    private IGumball machine;
+
+    /**
+     * Constructor for objects of class Kid
+     */
+    public Kid( IGumball m )
+    {
+        machine = m ;
+    }
+
+
+    public void Mommy()
+    {
+        machine.insertQuarter() ;
+        machine.turnCrank() ;
+    }
+}

demos/demo3/gumball-junit-lab/ver2/gumball/KidTest.java

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+package gumball;
+
+
+
+import static org.junit.Assert.*;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * The test class KidTest.
+ *
+ * @author  (your name)
+ * @version (a version number or a date)
+ */
+public class KidTest
+{
+    private gumball.IGumball m;
+
+    /**
+     * Default constructor for test class KidTest
+     */
+    public KidTest()
+    {
+    }
+
+    /**
+     * Sets up the test fixture.
+     *
+     * Called before every test case method.
+     */
+    @Before
+    public void setUp()
+    {
+        //m = new gumball.GumballMachine(10);
+        m = new gumball.GumballStub() ;
+    }
+
+    /**
+     * Tears down the test fixture.
+     *
+     * Called after every test case method.
+     */
+    @After
+    public void tearDown()
+    {
+    }
+
+    @Test
+    public void testHappy()
+    {
+        m.insertQuarter();
+        m.turnCrank();
+    }
+
+    @Test
+    public void testHappy2()
+    {
+        m.insertQuarter();
+        m.turnCrank();
+        assertEquals(true, m.hasGumball());
+    }
+
+    @Test
+    public void noQuarter()
+    {
+        m.turnCrank();
+        assertEquals(false, m.hasGumball());
+    }
+}
+
+
+

demos/demo3/gumball-junit-lab/ver2/gumball/package.bluej

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+#BlueJ package file
+dependency1.from=Kid
+dependency1.to=IGumball
+dependency1.type=UsesDependency
+dependency2.from=KidTest
+dependency2.to=GumballMachine
+dependency2.type=UsesDependency
+dependency3.from=KidTest
+dependency3.to=IGumball
+dependency3.type=UsesDependency
+dependency4.from=KidTest
+dependency4.to=GumballStub
+dependency4.type=UsesDependency
+objectbench.height=76
+objectbench.width=810
+package.editor.height=525
+package.editor.width=702
+package.editor.x=50
+package.editor.y=162
+package.numDependencies=4
+package.numTargets=5
+package.showExtends=true
+package.showUses=false
+target1.editor.height=700
+target1.editor.width=900
+target1.editor.x=325
+target1.editor.y=288
+target1.height=50
+target1.name=IGumball
+target1.naviview.expanded=true
+target1.showInterface=false
+target1.type=InterfaceTarget
+target1.typeParameters=
+target1.width=80
+target1.x=260
+target1.y=100
+target2.editor.height=700
+target2.editor.width=900
+target2.editor.x=257
+target2.editor.y=147
+target2.height=50
+target2.name=KidTest
+target2.naviview.expanded=true
+target2.showInterface=false
+target2.type=UnitTestTargetJunit4
+target2.typeParameters=
+target2.width=80
+target2.x=290
+target2.y=230
+target3.association=KidTest
+target3.editor.height=700
+target3.editor.width=900
+target3.editor.x=199
+target3.editor.y=226
+target3.height=50
+target3.name=Kid
+target3.naviview.expanded=true
+target3.showInterface=false
+target3.type=ClassTarget
+target3.typeParameters=
+target3.width=80
+target3.x=260
+target3.y=260
+target4.editor.height=700
+target4.editor.width=900
+target4.editor.x=303
+target4.editor.y=275
+target4.height=50
+target4.name=GumballMachine
+target4.naviview.expanded=true
+target4.showInterface=false
+target4.type=ClassTarget
+target4.typeParameters=
+target4.width=130
+target4.x=70
+target4.y=100
+target5.editor.height=700
+target5.editor.width=900
+target5.editor.x=90
+target5.editor.y=182
+target5.height=50
+target5.name=GumballStub
+target5.naviview.expanded=true
+target5.showInterface=false
+target5.type=ClassTarget
+target5.typeParameters=
+target5.width=100
+target5.x=80
+target5.y=170

demos/demo3/gumball-junit-lab/ver2/package.bluej

@@ -0,0 +1,22 @@
+#BlueJ package file
+package.editor.height=400
+package.editor.width=560
+package.editor.x=39
+package.editor.y=347
+package.numDependencies=0
+package.numTargets=2
+package.showExtends=true
+package.showUses=true
+project.charset=UTF-8
+target1.height=62
+target1.name=state
+target1.type=PackageTarget
+target1.width=80
+target1.x=70
+target1.y=10
+target2.height=62
+target2.name=gumball
+target2.type=PackageTarget
+target2.width=80
+target2.x=160
+target2.y=10