package beginner;

import com.sandwich.koan.Koan;

import static com.sandwich.koan.constant.KoanConstants.__;

import static com.sandwich.util.Assert.assertEquals;

public class AboutMethodPreference {

class A {

public String doStuff(int i) { return "int"; }

public String doStuff(Integer i) { return "Integer"; }

public String doStuff(Object i) { return "Object"; }

public String doStuff(int...i) { return "int vararg"; }

}

@Koan

public void methodPreferenceInt() {

assertEquals(new A().doStuff(1), __);

}

@Koan

public void methodPreferenceInteger() {

assertEquals(new A().doStuff(Integer.valueOf(1)), __);

}

@Koan

public void methodPreferenceLong() {

long l = 1;

assertEquals(new A().doStuff(l), __);

}

@Koan

public void methodPreferenceBoxedLong() {

Long l = Long.valueOf(1);

assertEquals(new A().doStuff(l), __);

}

@Koan

public void methodPreferenceDouble() {

Double l = Double.valueOf(1);

assertEquals(new A().doStuff(l), __);

}

@Koan

public void methodPreferenceMore() {

// What happens if you change 'Integer' to 'Double'

// Does this explain 'methodPreferenceDouble'?

// Think about why this happens?

assertEquals(new A().doStuff(1, Integer.valueOf(2)), __);

}

}