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‎part05-Part05_09.HealthStation/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project>
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<modelVersion>4.0.0</modelVersion>
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<groupId>tkt</groupId>
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<artifactId>Part05_09.HealthStation</artifactId>
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<name>Part05_09.HealthStation</name>
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<version>1.0-SNAPSHOT</version>
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<packaging>jar</packaging>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>fi.helsinki.cs.tmc</groupId>
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<artifactId>edu-test-utils</artifactId>
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<version>0.4.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.0</version>
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</plugin>
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>exec-maven-plugin</artifactId>
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<version>1.6.0</version>
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</plugin>
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</plugins>
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</build>
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<repositories>
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<repository>
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<id>tmc</id>
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<name>TMC repo</name>
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<url>https://maven.mooc.fi/releases</url>
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<releases>
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<enabled>true</enabled>
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</releases>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</repository>
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</repositories>
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<pluginRepositories>
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<pluginRepository>
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<id>tmc</id>
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<name>TMC repo</name>
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<url>https://maven.mooc.fi/releases</url>
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<releases>
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<enabled>true</enabled>
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</releases>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</pluginRepository>
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</pluginRepositories>
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</project>
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public class HealthStation {
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private int weighingCounter = 0;
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public int weigh(Person person) {
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// return the weight of the person passed as the parameter
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weighingCounter++;
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return person.getWeight();
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}
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public void feed(Person person) {
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person.setWeight(person.getWeight() + 1);
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}
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public int weighings() {
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return weighingCounter;
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}
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}
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public class Main {
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public static void main(String[] args) {
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// write experimental code here to check how your program functions
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}
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}
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/*
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* Do not change the behavior of this class
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*/
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public class Person {
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private String name;
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private int age;
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private int height;
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private int weight;
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public Person(String name, int age, int height, int weight) {
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this.name = name;
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this.age = age;
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this.height = height;
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this.weight = weight;
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}
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public void printPerson() {
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System.out.println("My name is " + this.name + " and I am " + this.age + " years old");
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}
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public void growOlder() {
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this.age++;
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}
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public boolean isOfLegalAge() {
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if (this.age > 17) {
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return true;
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}
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return false;
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}
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public void setHeight(int height) {
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this.height = height;
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}
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public int getHeight() {
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return this.height;
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}
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public int getWeight() {
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return this.weight;
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}
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public void setWeight(int weight) {
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this.weight = weight;
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}
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public double bmi() {
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double heightInMeters = this.height / 100.0;
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return this.weight / (heightInMeters * heightInMeters);
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}
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public String getName() {
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return this.name;
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}
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@Override
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public String toString() {
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return "My name is " + this.name + " and I am " + this.age + " years old. My BMI is " + this.bmi();
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}
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}
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import fi.helsinki.cs.tmc.edutestutils.Points;
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import fi.helsinki.cs.tmc.edutestutils.ReflectionUtils;
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import fi.helsinki.cs.tmc.edutestutils.Reflex;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.Random;
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import org.junit.*;
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import static org.junit.Assert.*;
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public class HealthStationTest {
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HealthStation station;
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Person peter;
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Random rand = new Random();
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Reflex.ClassRef<Object> klass;
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String klassName = "HealthStation";
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@Before
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public void findClass() {
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klass = Reflex.reflect(klassName);
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}
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@Before
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public void setUp() {
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station = new HealthStation();
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peter = new Person("Peter", 33, 175, 78);
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}
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@Points("05-09.1")
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@Test
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public void noExtraVariables1() {
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sanityCheck();
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}
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@Test
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@Points("05-09.1")
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public void canWeigh() {
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assertEquals("check the code: station = HealthStation(); "
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+ "p = new Person(\"Peter\", 33, 175, 78); "
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+ "System.out.println( station.weigh(p) )", peter.getWeight(), station.weigh(peter));
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for (int i = 0; i < 5; i++) {
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int weight = 60 + rand.nextInt(60);
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Person ethan = new Person("Ethan", 45, 181, weight);
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assertEquals("check the code: station = HealthStation(); "
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+ "p = new Person(\"Ethan\", 45, 181, " + weight + "); "
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+ "System.out.println( station.weigh(p) )", ethan.getWeight(), station.weigh(ethan));
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}
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}
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@Points("05-09.2")
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@Test
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public void noExtraVariables2() {
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sanityCheck();
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}
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@Points("05-09.2")
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@Test
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public void aMethodCalledFeedExists() throws Throwable {
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String method = "feed";
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Person p = new Person("Peter", 20, 175, 85);
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HealthStation s = new HealthStation();
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assertTrue("implement a method public void " + method + "(Person p) for the class " + klassName,
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klass.method(s, method).returningVoid().taking(Person.class).isPublic());
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String e = "\nThe code that caused the error "
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+ "s = new HealthStation; p = new Person(\"Peter\", 20, 175, 85); s.weigh(p);";
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klass.method(s, method).returningVoid().taking(Person.class).withNiceError(e).invoke(p);
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}
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@Test
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@Points("05-09.2")
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public void canFeed() {
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int expected = peter.getWeight() + 1;
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feed(station, peter);
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assertEquals("Feeding should increase the weight of the person by one kilo. Check the code: \n"
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+ "station = HealthStation(); "
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+ "p = new Person(\"Peter\", 33, 175, 78); "
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+ "station.feed(p); "
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+ "System.out.println( p.getPaino() )",
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expected, peter.getWeight());
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assertEquals("Feeding should increase the weight of the person by one kilo. Check the code: \n"
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+ "station = HealthStation(); "
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+ "p = new Person(\"Peter\", 33, 175, 78); "
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+ "station.feed(p); "
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+ "System.out.println( station.weigh(p) )",
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expected, station.weigh(peter));
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feed(station, peter);
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feed(station, peter);
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feed(station, peter);
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feed(station, peter);
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assertEquals("Feeding should increase the weight of the person by one kilo. Check the code: \n"
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+ "station = HealthStation(); "
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+ "peter = new Person(\"Peter\", 33, 175, 78); "
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+ "station.feed(peter); "
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+ "station.feed(peter); "
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+ "station.feed(peter); "
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+ "station.feed(peter); "
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+ "station.feed(peter); "
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+ "System.out.println( peter.getPaino() )",
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expected + 4, peter.getWeight());
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}
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@Points("05-09.3")
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@Test
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public void noExtraVariables3() {
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sanityCheck();
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}
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@Test
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@Points("05-09.3")
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public void aMethodCalledWeighingsExists() throws Throwable {
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String method = "weighings";
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HealthStation s = new HealthStation();
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assertTrue("implement a method public int " + method + "() for the class " + klassName,
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klass.method(s, method).returning(int.class).takingNoParams().isPublic());
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String e = "\nThe code that caused the error: "
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+ "s = new HealthStation; s.weighings();";
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klass.method(s, method).returning(int.class).takingNoParams().withNiceError(e).invoke();
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}
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@Test
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@Points("05-09.3")
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public void numberOfWeighingsInMemory() {
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assertEquals("Does the method weighings() work as intended? Initially no one has been weighed! Try out the code "
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+ "station = HealthStation(); "
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+ "System.out.println( station.weighings() )",
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0, weighings(station));
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station.weigh(peter);
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assertEquals("Does the method weighings() work as intended? The method should tell how many times the method weigh() has been called "
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+ "Try out the code\n"
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+ "station = HealthStation(); "
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+ "p1 = new Person(\"Peter\", 33, 175, 78); "
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+ "station.weigh(p1);"
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+ "System.out.println( station.weighings() )",
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1, weighings(station));
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Person ethan = new Person("Ethan", 0, 52, 4);
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station.weigh(ethan);
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assertEquals("Does the method weighings() work as intended? The method should tell how many times the method weigh() has been called "
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+ "Try out the code\n"
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+ "station = HealthStation(); "
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+ "p1 = new Person(\"Peter\", 33, 175, 78); "
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+ "p2 = new Person(\"Ethan\", 0, 52, 4); "
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+ "station.weigh(p1);"
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+ "station.weigh(p2);"
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+ "System.out.println( station.weighings() )",
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2, weighings(station));
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station.weigh(ethan);
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station.weigh(peter);
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station.weigh(peter);
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assertEquals("Does the method weighings() work as intended? The method should tell how many times the method weigh() has been called "
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+ "Try out the code\n"
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+ "station = HealthStation(); "
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+ "p1 = new Person(\"Peter\", 33, 175, 78); "
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+ "p2 = new Person(\"Ethan\", 0, 52, 4); "
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+ "station.weigh(p1);"
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+ "station.weigh(p2);"
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+ "station.weigh(p2);"
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+ "station.weigh(p1);"
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+ "station.weigh(p1);"
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+ "System.out.println( station.weighings() )",
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5, weighings(station));
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}
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String nameOfTheClass = "HealthStation";
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private void feed(Object station, Person hlo) {
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try {
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Method feed = ReflectionUtils.requireMethod(HealthStation.class, "feed", Person.class);
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ReflectionUtils.invokeMethod(void.class, feed, station, hlo);
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} catch (Throwable t) {
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}
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}
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private int weighings(Object station) {
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try {
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Method weighings = ReflectionUtils.requireMethod(HealthStation.class, "weighings");
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return ReflectionUtils.invokeMethod(int.class, weighings, station);
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} catch (Throwable t) {
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}
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return -1;
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}
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private void sanityCheck() throws SecurityException {
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String nameOfTheClass = "HealthStation";
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Field[] fields = ReflectionUtils.findClass(nameOfTheClass).getDeclaredFields();
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for (Field field : fields) {
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assertFalse("you don't need \"static variables\", delete " + fieldName(field.toString()), field.toString().contains("static") && !field.toString().contains("final"));
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assertTrue("visibility of every object variable of the class must be private, change " + fieldName(field.toString()), field.toString().contains("private"));
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}
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if (fields.length > 1) {
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int var = 0;
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for (Field field : fields) {
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if (!field.toString().contains("final")) {
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var++;
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}
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}
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assertTrue("The class " + nameOfTheClass + " only need the object variable that remembers the number of weighings. Delete unnecessary variables.", var < 2);
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}
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}
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private String fieldName(String toString) {
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return toString.replace(nameOfTheClass + ".", "");
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}
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}
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