Unit tests added, minor refactoring

[jalview.git] / test / jalview / schemes / AnnotationColourGradientTest.java

diff --git a/test/jalview/schemes/AnnotationColourGradientTest.java b/test/jalview/schemes/AnnotationColourGradientTest.java
index c9ceebb..42e3eb4 100644 (file)
--- a/test/jalview/schemes/AnnotationColourGradientTest.java
+++ b/test/jalview/schemes/AnnotationColourGradientTest.java
@@ -1,12 +1,168 @@
 package jalview.schemes;
 
+import static org.testng.Assert.assertEquals;
+
+import java.awt.Color;
+
+import jalview.datamodel.AlignmentAnnotation;
+import jalview.datamodel.Annotation;
+import jalview.datamodel.GraphLine;
+
+import org.testng.annotations.BeforeClass;
 import org.testng.annotations.Test;
 
 public class AnnotationColourGradientTest
 {
+  final static int WIDTH = 11;
+
+  final static int THRESHOLD = 5;
+
+  private AlignmentAnnotation ann;
+
+  Color minColour = new Color(50, 200, 150);
+
+  Color maxColour = new Color(150, 100, 250);
+
+  @BeforeClass
+  public void setUp()
+  {
+    Annotation[] anns = new Annotation[WIDTH];
+    /*
+     * set annotations with values 0-10
+     */
+    for (int col = 0; col < WIDTH; col++)
+    {
+      anns[col] = new Annotation("a", "a", 'a', col);
+    }
+
+    /*
+     * AlignmentAnnotation constructor works out min-max range
+     */
+    ann = new AlignmentAnnotation("", "", anns);
+    ann.setThreshold(new GraphLine(THRESHOLD, "", Color.RED));
+  }
+
   @Test(groups = "Functional")
-  public void testShadeCalculation()
+  public void testShadeCalculation_noThreshold()
   {
+    AnnotationColourGradient testee = new AnnotationColourGradient(ann,
+            minColour, maxColour, AnnotationColourGradient.NO_THRESHOLD);
+    for (int col = 0; col < WIDTH; col++)
+    {
+      Color result = testee.shadeCalculation(ann, col);
+      /*
+       * column <n> is n/10 of the way from minCol to maxCol
+       */
+      Color expected = new Color(50 + 10 * col, 200 - 10 * col,
+              150 + 10 * col);
+      assertEquals(result, expected, "for column " + col);
+    }
+  }
+
+  /**
+   * Test the 'colour above threshold' case
+   */
+  @Test(groups = "Functional")
+  public void testShadeCalculation_aboveThreshold()
+  {
+    AnnotationColourGradient testee = new AnnotationColourGradient(ann,
+            minColour, maxColour, AnnotationColourGradient.ABOVE_THRESHOLD);
+    for (int col = 0; col < WIDTH; col++)
+    {
+      Color result = testee.shadeCalculation(ann, col);
+      /*
+       * colour is derived regardless of the threshold value 
+       * (the renderer that will suppress colouring if
+       * above/below threshold)
+       */
+      Color expected = new Color(50 + 10 * col, 200 - 10 * col,
+              150 + 10 * col);
+      assertEquals(result, expected, "for column " + col);
+    }
+
+    /*
+     * now make 6-10 the span of the colour range
+     * (annotation value == column number in this test)
+     */
+    testee.setThresholdIsMinMax(true);
+    for (int col = 0; col < THRESHOLD; col++)
+    {
+      /*
+       * colours below the threshold are computed as before
+       */
+      Color expected = new Color(50 + 10 * col, 200 - 10 * col,
+              150 + 10 * col);
+      Color result = testee.shadeCalculation(ann, col);
+      assertEquals(result, expected, "for column " + col);
+    }
+    for (int col = THRESHOLD; col < WIDTH; col++)
+    {
+      /*
+       * colours for values >= threshold are graduated
+       * range is 6-10 so steps of 100/5 = 20
+       */
+      int factor = col - THRESHOLD;
+      Color expected = new Color(50 + 20 * factor, 200 - 20 * factor,
+              150 + 20 * factor);
+      Color result = testee.shadeCalculation(ann, col);
+      assertEquals(result, expected, "for column " + col);
+    }
+  }
+
+  /**
+   * Test the 'colour below threshold' case
+   */
+  @Test(groups = "Functional")
+  public void testShadeCalculation_belowThreshold()
+  {
+    /*
+     * change threshold to 5 so we have an easy calculation of
+     * the min-max range 0-5
+     */
+    int threshold = 5;
+    ann.setThreshold(new GraphLine(threshold, "", Color.RED));
+    AnnotationColourGradient testee = new AnnotationColourGradient(ann,
+            minColour, maxColour, AnnotationColourGradient.BELOW_THRESHOLD);
+
+    for (int col = 0; col < WIDTH; col++)
+    {
+      Color result = testee.shadeCalculation(ann, col);
+      /*
+       * colour is derived regardless of the threshold value 
+       * (the renderer that will suppress colouring if
+       * above/below threshold)
+       */
+      Color expected = new Color(50 + 10 * col, 200 - 10 * col,
+              150 + 10 * col);
+      assertEquals(result, expected, "for column " + col);
+    }
+
+    /*
+     * now make 0-5 the span of the colour range
+     * (annotation value == column number in this test)
+     */
+    testee.setThresholdIsMinMax(true);
+    for (int col = threshold + 1; col < WIDTH; col++)
+    {
+      /*
+       * colours above the threshold are computed as before
+       */
+      Color expected = new Color(50 + 10 * col, 200 - 10 * col,
+              150 + 10 * col);
+      Color result = testee.shadeCalculation(ann, col);
+      assertEquals(result, expected, "for column " + col);
+    }
 
+    for (int col = 0; col <= threshold; col++)
+    {
+      /*
+       * colours for values <= threshold are graduated
+       * range is 0-5 so steps of 100/5 = 20
+       */
+      Color expected = new Color(50 + 20 * col, 200 - 20 * col,
+              150 + 20 * col);
+      Color result = testee.shadeCalculation(ann, col);
+      assertEquals(result, expected, "for column " + col);
+    }
   }
 }