diff options
Diffstat (limited to 'src/test/java/com/jsyn/util/TestPseudoRandom.java')
| -rw-r--r-- | src/test/java/com/jsyn/util/TestPseudoRandom.java | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/test/java/com/jsyn/util/TestPseudoRandom.java b/src/test/java/com/jsyn/util/TestPseudoRandom.java index b37475f..b467f3b 100644 --- a/src/test/java/com/jsyn/util/TestPseudoRandom.java +++ b/src/test/java/com/jsyn/util/TestPseudoRandom.java @@ -22,7 +22,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertTrue; public class TestPseudoRandom { - PseudoRandom pseudoRandom; + PseudoRandom pseudoRandom = new PseudoRandom(12345); private int[] bins; private final static int BIN_SHIFTER = 8; private final static int BIN_COUNT = 1 << BIN_SHIFTER; @@ -41,6 +41,7 @@ public class TestPseudoRandom { @Test public void testIntegerDistribution() { int scaler = 100; + bins = new int[BIN_COUNT]; for (int i = 0; i < (bins.length * scaler); i++) { int rand = pseudoRandom.nextRandomInteger(); int positiveInt = rand & 0x7FFFFFFF; @@ -54,6 +55,7 @@ public class TestPseudoRandom { @Test public void test01Distribution() { int scaler = 100; + bins = new int[BIN_COUNT]; for (int i = 0; i < (bins.length * scaler); i++) { double rand = pseudoRandom.random(); assertTrue((rand >= 0.0), "not too low, #" + i + " = " + rand); @@ -65,7 +67,8 @@ public class TestPseudoRandom { } private void checkDistribution(int scaler) { - // Generate running average that should stay near scaler + // Generate running average that should stay near scaler. + // TODO This could randomly fail. double average = scaler; double coefficient = 0.9; for (int i = 0; i < (bins.length); i++) { |