Android Open Source - AstroPhysCalc Unit And Dim Test

From Project

Back to project page AstroPhysCalc.
License

The source code is released under:
Apache License
If you think the Android project AstroPhysCalc listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package org.astrophyscalc;
//  w  w w  . j  a v  a 2 s  .  c o m
import org.junit.Assert;
import org.junit.Test;


public class UnitAndDimTest extends Assert {

  @Test
  public void testCreate() {
    final Unit unit = TimeUnit.DAYS;
    final int numerator = 5;
    final int denominator = 7;
    final Dimension dim = Dimension.create(numerator, denominator);
    final UnitAndDim ud = UnitAndDim.create(unit, dim);

    assertEquals(dim, ud.getDim());

    String exceptionMsg = "";
    try {
      UnitAndDim.create(null, Dimension.create(2, 3));
    }
    catch (Exception ex) {
      exceptionMsg = ex.getMessage();
    }
    assertEquals(UnitAndDim.UNIT_NULL, exceptionMsg);

    try {
      UnitAndDim.create(TimeUnit.S, null);
    }
    catch (Exception ex) {
      exceptionMsg = ex.getMessage();
    }
    assertEquals(UnitAndDim.DIM_NULL, exceptionMsg);

    try {
      UnitAndDim.create(TimeUnit.DAYS, -5, 0);
    }
    catch (Exception ex) {
      exceptionMsg = ex.getMessage();
    }
    assertEquals(UnitAndDim.DENOMINATOR_ZERO, exceptionMsg);

    UnitAndDim ud1 = UnitAndDim.create(TimeUnit.YEARS, 3, -17);
    assertEquals(-3, ud1.getDim().getNumerator());
    assertEquals(17, ud1.getDim().getDenominator());

    ud1 = UnitAndDim.create(TimeUnit.DAYS, 4);
    assertEquals(4, ud1.getDim().getNumerator());
    assertEquals(1, ud1.getDim().getDenominator());

    assertEquals(UnitAndDim.create(TimeUnit.S, 1, 1), UnitAndDim.create(TimeUnit.S));
  }

  @Test
  public void testEquals() {

    Unit unit1 = TimeUnit.DAYS;
    int num1 = 5;
    int den1 = 7;
    Dimension dim1 = Dimension.create(num1, den1);

    Unit unit2 = TimeUnit.YEARS;
    int num2 = 3;
    int den2 = 9;
    Dimension dim2 = Dimension.create(num2, den2);

    UnitAndDim ud1;
    UnitAndDim ud2;

    // UnitAndDim, null
    ud1 = UnitAndDim.create(unit1, dim1);
    ud2 = null;
    assertEquals(false, ud1.equals(ud2));

    // UnitAndDim, Object
    ud1 = UnitAndDim.create(unit1, dim1);
    assertEquals(false, ud1.equals(new Object()));

    // equal, equal
    ud1 = UnitAndDim.create(unit1, dim1);
    ud2 = UnitAndDim.create(unit1, dim1);
    assertEquals(true, ud1.equals(ud2));

    // equal, not equal
    ud1 = UnitAndDim.create(unit1, dim1);
    ud2 = UnitAndDim.create(unit1, dim2);
    assertEquals(false, ud1.equals(ud2));

    // not equal, equal
    ud1 = UnitAndDim.create(unit1, dim1);
    ud2 = UnitAndDim.create(unit2, dim1);
    assertEquals(false, ud1.equals(ud2));

    // not equal, not equal
    ud1 = UnitAndDim.create(unit1, dim1);
    ud2 = UnitAndDim.create(unit2, dim2);
    assertEquals(false, ud1.equals(ud2));
  }

  @Test
  public void testIsDimensionOne() {
    assertEquals(true, UnitAndDim.create(TimeUnit.YEARS).isDimensionOne());
    assertEquals(false, UnitAndDim.create(TimeUnit.YEARS, -1).isDimensionOne());
  }

  @Test
  public void testIsDimensionZero() {
    assertEquals(true, UnitAndDim.create(TimeUnit.DAYS, 0).isDimensionZero());
  }

  @Test
  public void testToBase() {
    assertEquals(UnitAndDim.create(TimeUnit.S, -3, 5), UnitAndDim.create(TimeUnit.YEARS, 3, -5).toBase());
  }

  @Test
  public void testIsSameBaseAs() {
    assertEquals(true, UnitAndDim.create(TimeUnit.DAYS).isSameBaseAs(UnitAndDim.create(TimeUnit.YEARS)));
    assertEquals(false, UnitAndDim.create(TimeUnit.DAYS).isSameBaseAs(UnitAndDim.create(LengthUnit.M)));
  }

  @Test
  public void isSameUnitAs() {
    assertEquals(false, UnitAndDim.create(TimeUnit.DAYS).isSameUnitAs(UnitAndDim.create(TimeUnit.YEARS)));
    assertEquals(false, UnitAndDim.create(LengthUnit.AU).isSameUnitAs(UnitAndDim.create(TimeUnit.YEARS)));
    assertEquals(true, UnitAndDim.create(TimeUnit.DAYS).isSameUnitAs(UnitAndDim.create(TimeUnit.DAYS)));
  }

  @Test
  public void testGetConversionTo() {
    UnitAndDim ud1 = UnitAndDim.create(TimeUnit.S);
    UnitAndDim ud2 = UnitAndDim.create(LengthUnit.M);

    String exceptionMsg = "";
    try {
      ud1.getConversionTo(ud2);
    }
    catch (IllegalArgumentException ex) {
      exceptionMsg = ex.getMessage();
    }
    assertEquals(UnitAndDim.NOT_SAME_BASE, exceptionMsg);

    UnitAndDim ud3 = UnitAndDim.create(TimeUnit.DAYS);
    assertEquals(86400d, ud3.getConversionTo(ud1), 1E-9d);

    assertEquals(1d / 86400d, ud1.getConversionTo(ud3), 1E-9d);
  }

  @Test
  public void testInverse() {
    assertEquals(UnitAndDim.create(TimeUnit.DAYS, -3, 5).inverse(), UnitAndDim.create(TimeUnit.DAYS, 3, 5));
  }

  @Test
  public void testMultiplyBy() {
    UnitAndDim ud1 = UnitAndDim.create(TimeUnit.S, 2, 7);
    UnitAndDim ud2 = UnitAndDim.create(TimeUnit.DAYS, 2, 5);

    String exceptionMsg = "";
    try {
      ud1.multiplyBy(ud2);
    }
    catch (IllegalArgumentException ex) {
      exceptionMsg = ex.getMessage();
    }
    assertEquals(UnitAndDim.NOT_SAME_UNIT, exceptionMsg);

    UnitAndDim ud3 = UnitAndDim.create(TimeUnit.DAYS, -2, 5);
    UnitAndDim result = ud3.multiplyBy(ud2);
    assertEquals(true, result.getDim().isZero());
    assertEquals(TimeUnit.DAYS, result.getUnit());
  }

  @Test
  public void testDivideBy() {
    UnitAndDim ud1 = UnitAndDim.create(TimeUnit.YEARS, 2, 7);
    UnitAndDim ud2 = UnitAndDim.create(TimeUnit.YEARS, 2, 5);

    assertEquals(UnitAndDim.create(TimeUnit.YEARS, -4, 35), ud1.divideBy(ud2));
  }

  @Test
  public void testPow() {
    UnitAndDim ud2 = UnitAndDim.create(TimeUnit.YEARS, 1, 2);

    assertEquals(UnitAndDim.create(TimeUnit.YEARS, 3, 10), ud2.pow(3, 5));
  }
}
Java Source Code List
