/** Two objects that are equal are required to return the same hashCode. */
public void testHashCode() {
DialBackground b1 = new DialBackground(Color.red);
DialBackground b2 = new DialBackground(Color.red);
assertTrue(b1.equals(b2));
int h1 = b1.hashCode();
int h2 = b2.hashCode();
assertEquals(h1, h2);
}
protected void setDialBackground(ChartDocument chartDocument, DialPlot dialPlot) {
ChartElement plotElement = getUniqueElement(chartDocument, ChartElement.TAG_NAME_PLOT);
CSSValuePair cssValue =
(CSSValuePair) plotElement.getLayoutStyle().getValue(ChartStyleKeys.GRADIENT_COLOR);
Color beginColor = JFreeChartUtils.getColorFromCSSValue(cssValue.getFirstValue());
Color endColor = JFreeChartUtils.getColorFromCSSValue(cssValue.getSecondValue());
GradientPaint gradientpaint = new GradientPaint(new Point(), beginColor, new Point(), endColor);
DialBackground dialbackground =
new DialBackground(gradientpaint); // specify Color here for no gradient
dialbackground.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL));
dialPlot.setBackground(dialbackground);
}
/** Serialize an instance, restore it, and check for equality. */
public void testSerialization() {
// test a default instance
DialBackground b1 = new DialBackground();
DialBackground b2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(b1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
b2 = (DialBackground) in.readObject();
in.close();
} catch (Exception e) {
e.printStackTrace();
}
assertEquals(b1, b2);
// test a customised instance
b1 = new DialBackground();
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.green));
b1.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
b2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(b1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
b2 = (DialBackground) in.readObject();
in.close();
} catch (Exception e) {
e.printStackTrace();
}
assertEquals(b1, b2);
}
/** Confirm that the equals method can distinguish all the required fields. */
public void testEquals() {
DialBackground b1 = new DialBackground();
DialBackground b2 = new DialBackground();
assertTrue(b1.equals(b2));
// paint
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow));
assertFalse(b1.equals(b2));
b2.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow));
assertTrue(b1.equals(b2));
// gradient paint transformer
b1.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
assertFalse(b1.equals(b2));
b2.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
assertTrue(b1.equals(b2));
// check an inherited attribute
b1.setVisible(false);
assertFalse(b1.equals(b2));
b2.setVisible(false);
assertTrue(b1.equals(b2));
}
/** Confirm that cloning works. */
public void testCloning() {
// test default instance
DialBackground b1 = new DialBackground();
DialBackground b2 = null;
try {
b2 = (DialBackground) b1.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(b1 != b2);
assertTrue(b1.getClass() == b2.getClass());
assertTrue(b1.equals(b2));
// test a customised instance
b1 = new DialBackground();
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.green));
b1.setGradientPaintTransformer(
new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
b2 = null;
try {
b2 = (DialBackground) b1.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(b1 != b2);
assertTrue(b1.getClass() == b2.getClass());
assertTrue(b1.equals(b2));
// check that the listener lists are independent
MyDialLayerChangeListener l1 = new MyDialLayerChangeListener();
b1.addChangeListener(l1);
assertTrue(b1.hasListener(l1));
assertFalse(b2.hasListener(l1));
}