public void AlterConstructorExceptionsTest()
{
//Arrange
int numerator = -1;
int denominator = 0;
//Act
Fraction target = new Fraction(numerator, denominator);
}
public void BaseConstructorExceptionsTest()
{
//Arrange
ulong numerator = 1;
ulong denominator = 0;
bool isNegative = false;
//Act
Fraction target = new Fraction(numerator, denominator, isNegative);
}
public static int LowestCommonDenominator(Fraction f1, Fraction f2)
{
int lowestDenominator = Math.Min(f1.Denominator, f2.Denominator);
int highestDenominator = Math.Max(f1.Denominator, f2.Denominator);
int lowestCommonDenominator = lowestDenominator;
int multiple = 1;
while (lowestCommonDenominator % highestDenominator != 0)
{
lowestCommonDenominator = lowestDenominator * ++multiple;
}
return lowestCommonDenominator;
}
public void TestFractionCreation()
{
Fraction fraction = new Fraction("1/4");
Assert.AreEqual(1, fraction.Numerator);
Assert.AreEqual(4, fraction.Denominator);
fraction = new Fraction("01/4");
Assert.AreEqual(1, fraction.Numerator);
Assert.AreEqual(4, fraction.Denominator);
fraction = new Fraction(" 1/ 4");
Assert.AreEqual(1, fraction.Numerator);
Assert.AreEqual(4, fraction.Denominator);
}
public string ConvertStringFromFraction(Fraction value, FractionToStringFormatTypes format = FractionToStringFormatTypes.ToFractional)
{
switch (format)
{
case FractionToStringFormatTypes.ToDecimal:
return value.ToDecimal(null).ToString();
case FractionToStringFormatTypes.ToFractional:
return value.ToString();
default:
throw new FormattingnErrorException("Unknown format");
}
}
public void TestBadFraction()
{
try
{
Fraction fraction = new Fraction("one/4");
fraction = new Fraction("1");
fraction = new Fraction("/");
fraction = new Fraction("1/fourth");
fraction = new Fraction(null);
}
catch (System.FormatException)
{
return;
}
Assert.Fail("Expected FormatException");
}
public void OperatorSubtractionTest()
{
//Arrange
Fraction a = new Fraction(-1, 2);
Fraction b = new Fraction(1, 4);
Fraction expected = new Fraction(-3, 4);
//Act
Fraction actual = (a - b);
//Assert
Assert.AreEqual(expected, actual);
}
public void OperatorNegationTest()
{
//Arrange
Fraction a = new Fraction(1, 2);
Fraction expected = new Fraction(1, 2, true);
//Act
Fraction actual = -a;
//Assert
Assert.AreEqual(expected, actual);
}
public void DecimalStringParsingTest()
{
//Arrange
string teststring = "1.25";
Fraction expected = new Fraction(10, 8);
//Act
Fraction actual = Fraction.Parse(teststring);
//Assert
Assert.AreEqual(expected, actual);
}
private void BtnAdd_Click(object sender, EventArgs e)
{
// Verify Number will parse our entries. This version will use TryParse in the method VerifyNumbers().
String badEntry = VerifyNumbers();
// if VerifyNumbers didn't return null, it found bad character, break out of method and return to main for user to fix.
if (badEntry != null)
{
labelResults.Text = "You entered an invalid number. Please enter a valid integer. Bad entry: " + badEntry;
return;
}
// no bad entries found, continue with fraction creation and math!
f1 = new MixedFraction(Convert.ToInt32(txtWhole1.Text), Convert.ToInt32(num1.Text),
Convert.ToInt32(den1.Text));
f2 = new MixedFraction(Convert.ToInt32(txtWhole2.Text), Convert.ToInt32(num2.Text),
Convert.ToInt32(den2.Text));
// // If I wanted to use Try/Catch: This code would replace above code. It will print out an error message.
//
// try
// {
// f1 = new MixedFraction(Convert.ToInt32(txtWhole1.Text), Convert.ToInt32(num1.Text),
// Convert.ToInt32(den1.Text));
// f2 = new MixedFraction(Convert.ToInt32(txtWhole2.Text), Convert.ToInt32(num2.Text),
// Convert.ToInt32(den2.Text));
// }
// catch (FormatException exception)
// {
// labelResults.Text = "Data entered was not valid. Enter valid integers. Error: " + exception.Message;
// return;
// }
labelFraction1.Text = f1.GetString();
labelFraction2.Text = f2.GetString();
answer = new MixedFraction();
answer.Add(f1, f2);
// get mixed fractions for first and second entered fractions, print out as string
MixedFraction mixedFraction1 = new MixedFraction();
MixedFraction mixedFraction2 = new MixedFraction();
mixedFraction1.ToMixedFraction(f1);
mixedFraction2.ToMixedFraction(f2);
labelFraction1.Text = mixedFraction1.GetMixedString();
labelFraction2.Text = mixedFraction2.GetMixedString();
// Convert improper Fraction to mixed fraction
MixedFraction mixedAnswer = new MixedFraction();
mixedAnswer.ToMixedFraction(answer);
lblResult.Text = mixedAnswer.GetMixedString();
txtWholeResult.Text = Convert.ToString(mixedAnswer.GetWhole());
numResult.Text = Convert.ToString(mixedAnswer.GetMixedNumerator());
denResult.Text = Convert.ToString(mixedAnswer.GetMixedDen());
labelResults.Text = ("All your numbers were valid!");
}
public void EqualOperatorTest()
{
//Arrange
Fraction x = new Fraction(6, 8);
Fraction y = new Fraction(3, 4);
Fraction z = new Fraction(12, 16);
Fraction a = new Fraction(11, 16);
object dec = 3M / 4M; ;
Fraction k = null;
Fraction l = null;
//Assert
Assert.IsTrue(x == x); //Рефлексивность
Assert.AreEqual(x == y, y == x); //Симметричность
Assert.AreEqual(y == z, x == z); //Транзитивность
Assert.IsTrue(k == null);
Assert.IsTrue(l == null);
Assert.IsTrue(null == k);
Assert.IsTrue(null == l);
Assert.IsTrue(k == l);
Assert.IsFalse(a == dec);
Assert.IsFalse(a == k);
Assert.IsFalse(z == null);
Assert.IsTrue(a != k);
Assert.IsTrue(l != z);
}
public void StaticReduceNotCopyFractionTest()
{
//Arrange
Fraction bigFraction = new Fraction(36, 63);
Fraction expectedSmallFraction = new Fraction(4, 7);
//Act
var actualReducedFraction = Fraction.Reduce(bigFraction);
//Assert
Assert.IsTrue(System.Object.ReferenceEquals(bigFraction, actualReducedFraction));
Assert.AreEqual(expectedSmallFraction.Numerator, actualReducedFraction.Numerator);
Assert.AreEqual(expectedSmallFraction.Denominator, actualReducedFraction.Denominator);
Assert.AreEqual(expectedSmallFraction.IsNegative, actualReducedFraction.IsNegative);
}
public void MathDivisionNullLeftTest()
{
//Arrange
Fraction a = null;
Fraction b = new Fraction(1, 1); ;
//Act
Fraction actual = a / b;
}
public void MathMultiplicationNullRightTest()
{
//Arrange
Fraction a = new Fraction(1, 1); ;
Fraction b = null;
//Act
Fraction actual = a * b;
}
public void GetTypeCodeTest()
{
//Arrange
Fraction target = new Fraction(1, 3);
TypeCode expected = TypeCode.Object;
//Act
TypeCode actual = target.GetTypeCode();
//Assert
Assert.AreEqual(expected, actual);
}
public void MathAdditionNullLeftTest()
{
//Arrange
Fraction a = null;
Fraction b = new Fraction(1, 1);
//Act
Fraction actual = a + b;
}
public void GetHashCodeTest()
{
//Arrange
var frac1 = new Fraction(0.5);
var frac2 = new Fraction(1, 2);
var frac3 = Fraction.Parse("-1/2");
//Act
Fraction frac2_alt = (Fraction)frac2.Clone();
frac2_alt.Numerator += 1;
//Assert
Assert.AreEqual(frac1.GetHashCode(), frac2.GetHashCode());
Assert.AreNotEqual(frac1.GetHashCode(), frac3.GetHashCode());
Assert.AreNotEqual(frac2.GetHashCode(), frac2_alt.GetHashCode());
}
public void FractionStringsParsingTest()
{
//Arrange
string teststringVar1 = "-12/22";
string teststringVar2 = "-6|11";
string teststringVar3 = @"-24\44";
string teststringVar4 = @"-24|44/unused_part";
Fraction expected = new Fraction(-12, 22);
//Act
Fraction actualVar1 = Fraction.Parse(teststringVar1);
Fraction actualVar2 = Fraction.Parse(teststringVar2);
Fraction actualVar3 = Fraction.Parse(teststringVar3);
Fraction actualVar4 = Fraction.Parse(teststringVar4);
//Assert
Assert.AreEqual(expected, actualVar1);
Assert.AreEqual(expected, actualVar2);
Assert.AreEqual(expected, actualVar3);
Assert.AreEqual(expected, actualVar4);
}
public void EqualsTest()
{
//Arrange
Fraction x = new Fraction(6, 8);
Fraction y = new Fraction(3, 4);
Fraction z = new Fraction(1, 1);
z.Numerator = 12;
z.Denominator = 16;
Fraction a = new Fraction(-12, 16);
object k = x.Clone();
object m = z.Clone();
object notFrac = new Double();
notFrac = 5;
Fraction l = null;
//Assert
Assert.IsTrue(x.Equals(x)); //Рефлексивность
Assert.AreEqual(x.Equals(y), y.Equals(x)); //Симметричность
Assert.AreEqual(y.Equals(z), x.Equals(z)); //Транзитивность
Assert.IsFalse(k.Equals(a));
Assert.IsFalse(k.Equals(null));
Assert.IsFalse(k.Equals(notFrac));
Assert.IsTrue(k.Equals(m));
Assert.IsFalse(k.Equals(l));
Assert.IsTrue(y.Equals(k));
Assert.IsFalse(z.Equals(null));
}
public void ReduceFractionTest()
{
//Arrange
Fraction actualFraction = new Fraction(36, 63);
Fraction expectedFraction = new Fraction(4, 7);
//Act
actualFraction.Reduce();
//Assert
Assert.AreEqual(expectedFraction.Numerator, actualFraction.Numerator);
Assert.AreEqual(expectedFraction.Denominator, actualFraction.Denominator);
Assert.AreEqual(expectedFraction.IsNegative, actualFraction.IsNegative);
}
public void MathSubstractionNullRightTest()
{
//Arrange
Fraction a = new Fraction(1, 1); ;
Fraction b = null;
//Act
Fraction actual = a - b;
}
public void SortArraysOfFractions()
{
//Arrange
var numberOfSamples = 5;
Fraction[] fractions = new Fraction[numberOfSamples];
ulong[] values = new ulong[numberOfSamples];
for (int i = 0; i < numberOfSamples; i++)
{
fractions[i] = new Fraction(1, Convert.ToUInt32(rand.Next(2, 100)), false);
values[i] = fractions[i].Denominator;
}
var orderComparer = new Mock<IComparer>();
orderComparer.Setup(foo => foo.Compare(It.IsAny<ulong>(), It.IsAny<Fraction>())).Returns((ulong a, Fraction b) => (a.CompareTo(b.Denominator)));
//Act
Array.Sort(fractions);
Array.Sort(values, (a, b) => { return -a.CompareTo(b); });
//Assert
CollectionAssert.AreEqual(values, fractions, orderComparer.Object);
}
public void TestLowestCommonDenominator()
{
Fraction fourNinths = new Fraction("4/9");
Fraction elevenTwelths = new Fraction("11/12");
Assert.AreEqual(36, Fraction.LowestCommonDenominator(fourNinths, elevenTwelths));
}
public void TestAddFractionSimple()
{
Fraction f1 = new Fraction("4/9");
Fraction f2 = new Fraction("11/12");
Assert.AreEqual(new Fraction("49/36"), f1 + f2);
}
public Fraction(Fraction f)
{
//this constructor takes a fraction as parameter
fract = f;
}
public void OperatorAdditionTest()
{
//Arrange
Fraction a = new Fraction(1, 2);
Fraction b = new Fraction(1, 3);
Fraction expected = new Fraction(5, 6);
//Act
Fraction actual = a + b;
//Assert
Assert.AreEqual(expected, actual);
}
public void DenominatorPropertyExceptionsTest()
{
Fraction frac = new Fraction(1, 123);
frac.Denominator *= 0;
}
private void GreatestCommonDenominator(Fraction f1, Fraction f2, out Fraction f4, out Fraction f5)
{
f1.numerator *= f2.denominator;
f2.numerator *= f1.denominator;
f1.denominator *= f2.denominator;
f2.denominator = f1.denominator;
f4 = f1;
f5 = f2;
}
public void ConstructionZeroTest()
{
//Arrange
float number = 0;
Fraction expected = new Fraction(0, 1);
//Act
var actual = new Fraction(number);
//Assert
Assert.AreEqual<ulong>(expected.Numerator, actual.Numerator);
Assert.AreEqual<ulong>(expected.Denominator, actual.Denominator);
Assert.AreEqual<bool>(expected.IsNegative, actual.IsNegative);
}
public void OperatorDivisionRightZeroTest()
{
//Arrange
Fraction a = new Fraction(1, 2);
Fraction b = new Fraction(0, 1234567890);
//Act
Fraction actual = a / b;
}
public void OperatorMultiplyRightNegativeTest()
{
//Arrange
Fraction a = new Fraction(1, 2);
Fraction b = new Fraction(-3, 4);
Fraction expected = new Fraction(-3, 8);
//Act
Fraction actual = (a * b);
//Assert
Assert.AreEqual(expected, actual);
}
public void OperatorDivisionRightNegativeTest()
{
//Arrange
Fraction a = new Fraction(1, 2);
Fraction b = new Fraction(-1, 3);
Fraction expected = new Fraction(-3, 2);
//Act
Fraction actual = a / b;
//Assert
Assert.AreEqual(expected, actual);
}
public void DecimalCapacityConstructionTest()
{
//Arrange
var veryLongNumber = 123M / 888M;
//Act
Fraction frac = new Fraction(veryLongNumber);
}