我正在收到InitializatoinError。
java.lang.Exception:测试类应仅具有一个公共的零参数构造函数我的代码是(这是暴露于Java Programming Interview中的示例):
import org.junit.*;
import static org.junit.Assert.*;
public class Complex {
private final double real;
private final double imaginary;
public Complex(final double r, final double i) {
this.real = r;
this.imaginary = i;
}
public Complex add(final Complex other) {
return new Complex(this.real + other.real,
this.imaginary + other.imaginary);
}
// hashCode omitted for brevity
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Complex complex = (Complex) o;
if (Double.compare(complex.imaginary, imaginary) != 0) return false;
if (Double.compare(complex.real, real) != 0) return false;
return true;
}
@Test
public void complexNumberAddition() {
final Complex expected = new Complex(6,2);
final Complex a = new Complex(8,0);
final Complex b = new Complex(-2,2);
assertEquals(a.add(b), expected);
}
}
任何帮助将不胜感激。
错误确切说明了错误所在。您的课程没有“完全是一个公共的零参数构造函数”。
但是黄金法则是在商务舱之外进行测试。因此,创建一个名为public class ComplexTest
的新类,并将您的测试方法放在此处。