Merge branch 'develop' into features/JAL-250_hideredundantseqs

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

diff --git a/test/jalview/schemes/TurnColourSchemeTest.java b/test/jalview/schemes/TurnColourSchemeTest.java
new file mode 100644 (file)
index 0000000..5e6baf0
--- /dev/null
+++ b/test/jalview/schemes/TurnColourSchemeTest.java
@@ -0,0 +1,35 @@
+package jalview.schemes;
+
+import static org.testng.Assert.assertEquals;
+
+import java.awt.Color;
+
+import org.testng.annotations.Test;
+
+public class TurnColourSchemeTest
+{
+  /**
+   * Turn colours are based on the scores in ResidueProperties.turn A = 0.66, R
+   * = 0.95, N = 1.56, D = 1.46... min = 0.47 max = 1.56
+   * <p>
+   * scores are scaled to c 0-1 between min and max and colour is (c, 1-c, 1-c)
+   */
+  @Test(groups = "Functional")
+  public void testFindColour()
+  {
+    ScoreColourScheme scheme = new TurnColourScheme();
+
+    float min = 0.47f;
+    float max = 1.56f;
+    float a = (0.66f - min) / (max - min);
+    assertEquals(scheme.findColour('A', 0, null),
+            new Color(a, 1 - a, 1 - a));
+
+    float d = (1.46f - min) / (max - min);
+    assertEquals(scheme.findColour('D', 0, null),
+            new Color(d, 1 - d, 1 - d));
+
+    assertEquals(scheme.findColour('-', 0, null), Color.WHITE);
+  }
+
+}