16 lines
244 B
JavaScript
16 lines
244 B
JavaScript
class Animal {
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sayHi() {
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return 'Hi, I am a '+this.type()+'.';
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}
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}
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class Dog extends Animal {
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type() { return 'dog'; }
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sayHi() {
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return super.sayHi() + ' WOOF!';
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}
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}
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expect(new Dog().sayHi()).toBe('Hi, I am a dog. WOOF!');
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