### Question:
RawConfiguration implements Serializable, DeepCopyable<RawConfiguration> { @Override public boolean equals(Object obj) { if (obj == null) { return false; } if (obj == this) { return true; } if (obj instanceof RawConfiguration) { RawConfiguration that = (RawConfiguration) obj; if (this.sha256 != null && this.sha256.equals(that.sha256)) { if (this.path == null && that.path == null) { return true; } if ((this.path != null && that.path != null) && this.path.equals(that.path)) { return true; } } } return false; } RawConfiguration(); int getId(); void setId(int id); String getPath(); void setPath(String path); String getContents(); void setContents(String contents, String sha256); String getSha256(); void setSha256(String digestString); long getCtime(); long getMtime(); Configuration getConfiguration(); void setConfiguration(Configuration configuration); @Override boolean equals(Object obj); @Override int hashCode(); @Override String toString(); RawConfiguration deepCopy(boolean keepId); @Transient
    public String errorMessage; }### Answer:
@Test public void verifyEqualsWhenObjectIsNull() { RawConfiguration rawConfig = new RawConfiguration(); assertFalse(rawConfig.equals(null), "equals() should return false when incoming object is null."); }
@Test public void verifyEqualsWhenObjectIsNotARawConfiguration() { RawConfiguration rawConfig = new RawConfiguration(); assertFalse(rawConfig.equals(new Object()), "equals() should return false when incoming object is not a " + RawConfiguration.class.getSimpleName()); }
@Test public void verifyEqualsWhenNeitherRawConfigurationHasContentsOrPathSet() { RawConfiguration r1 = new RawConfiguration(); RawConfiguration r2 = new RawConfiguration(); assertFalse(r1.equals(r2), "equals() should return false when contents and path is null for both raw configs"); }
@Test public void verifyEqualsWhenRawConfigurationArgHasNullContents() { RawConfiguration r1 = new RawConfiguration(); setContentsAndSha256(r1, "contents"); RawConfiguration r2 = new RawConfiguration(); assertFalse(r1.equals(r2), "equals() should return false when contents is null for one of the objects."); }
@Test public void verifyEqualsIsReflexive() { RawConfiguration rawConfig = new RawConfiguration(); assertTrue(rawConfig.equals(rawConfig), "equals() should be reflexive."); }