Quality Code: Software Testing Principles, Practices, and Patterns

Share Constants

One of the challenges in getting started arises when constructors set state independent of getters and setters. A typical example of this occurs when constructors use default values, common when you have multiple constructors and simpler ones call more complex ones (Listing 6-4).

Listing 6-4: Use of literal default values in constructor implementations

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public class FixedThreadPool {  private final int poolSize;  public FixedThreadPool(int poolSize) {    this.poolSize = poolSize;  }  public FixedThreadPool() {    this(10);  }  public int getPoolSize() {    return poolSize;  }}

Testing the first constructor is trivial. We pass a pool size and use the getter to verify it. We cannot use the getter and ...