Class RoundingUtilsTest

java.lang.Object
ubic.gemma.core.util.RoundingUtilsTest
public class RoundingUtilsTest extends Object
Unit tests for RoundingUtils, the JSON-side counterpart of TsvUtils.format(double).
Author:
paul

  • Constructor Details

    • RoundingUtilsTest

      public RoundingUtilsTest()

  • Method Details

    • testAlreadyShorterThanFourDigitsIsUnchanged

      @Test public void testAlreadyShorterThanFourDigitsIsUnchanged()

    • testZeroKeepsItsSign

      @Test public void testZeroKeepsItsSign()

    • testNegativeIsRoundedNotTruncated

      @Test public void testNegativeIsRoundedNotTruncated()

    • testNonFiniteValuesAreLeftAlone

      @Test public void testNonFiniteValuesAreLeftAlone()
      Math.round(NaN) is 0.0, which on a mean-variance or correlation payload reads as "this value is zero" rather than "not known". The infinities have the same hazard in the other direction.

    • testVerySmallValuesSurvive

      @Test public void testVerySmallValuesSurvive()
      The reason the rule is significant digits and not decimal places: a corrected p-value of 1e-300 has to come back as 1e-300, and any fixed number of decimals flattens it to zero.

    • testLargeValuesKeepTheirMagnitude

      @Test public void testLargeValuesKeepTheirMagnitude()

    • testRoundedValueSerializesShort

      @Test public void testRoundedValueSerializesShort()
      The point of the exercise: four significant digits has to actually shorten the serialized form, or the bytes on the wire do not move.

    • testBoxedOverloadPassesNullThrough

      @Test public void testBoxedOverloadPassesNullThrough()

    • testArrayIsCopiedNotRoundedInPlace

      @Test public void testArrayIsCopiedNotRoundedInPlace()
      Rounding in place would corrupt the loaded entity's array or the cached matrix's backing store, which is the hazard the sample-correlation rounding was written around.

    • testMatrixIsCopiedRowByRow

      @Test public void testMatrixIsCopiedRowByRow()

    • testNullArraysArePassedThrough

      @Test public void testNullArraysArePassedThrough()

    • testSerializerEmitsRoundedNumberAndSkipsNull

      @Test public void testSerializerEmitsRoundedNumberAndSkipsNull() throws Exception
      Throws:
      Exception

    • testSerializerLeavesTheInMemoryValueExact

      @Test public void testSerializerLeavesTheInMemoryValueExact() throws Exception
      Throws:
      Exception