using FsCheck; using Exercism.Tests; using FsCheck.Fluent; public class HyperiaForexTests { [Fact] [Task(1)] public void Equality_with_same_currency() { Prop.ForAll(value => { var amount1 = new CurrencyAmount(value, "HD"); var amount2 = new CurrencyAmount(value, "HD"); Assert.True(amount1 == amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(1)] public void Equality_with_different_currency() { Prop.ForAll(value => { var amount1 = new CurrencyAmount(value, "HD"); var amount2 = new CurrencyAmount(value, "USD"); Assert.Throws(() => amount1 == amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(1)] public void Inequality_with_same_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); return Prop.When(values.Item1 != values.Item2, () => Assert.True(amount1 != amount2)); }).QuickCheckThrowOnFailure(); } [Fact] [Task(1)] public void Inequality_with_different_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "USD"); Assert.Throws(() => amount1 != amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(2)] public void LessThan_with_same_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); return Prop.When(values.Item1 < values.Item2, () => Assert.True(amount1 < amount2)); }).QuickCheckThrowOnFailure(); } [Fact] [Task(2)] public void LessThan_with_different_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "USD"); Assert.Throws(() => amount1 < amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(2)] public void GreaterThan_with_same_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); return Prop.When(values.Item1 > values.Item2, () => Assert.True(amount1 > amount2)); }).QuickCheckThrowOnFailure(); } [Fact] [Task(2)] public void GreaterThan_with_different_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "USD"); Assert.Throws(() => amount1 > amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(3)] public void Addition_with_same_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); var expected = new CurrencyAmount(values.Item1 + values.Item2, "HD"); Assert.Equal(expected, amount1 + amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(3)] public void Addition_is_commutative() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); Assert.Equal(amount1 + amount2, amount2 + amount1); }).QuickCheckThrowOnFailure(); } [Fact] [Task(3)] public void Addition_with_different_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "USD"); Assert.Throws(() => amount1 + amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(3)] public void Subtraction_with_same_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "HD"); var expected = new CurrencyAmount(values.Item1 - values.Item2, "HD"); Assert.Equal(expected, amount1 - amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(3)] public void Subtraction_with_different_currency() { Prop.ForAll<(decimal, decimal)>(values => { var amount1 = new CurrencyAmount(values.Item1, "HD"); var amount2 = new CurrencyAmount(values.Item2, "USD"); Assert.Throws(() => amount1 - amount2); }).QuickCheckThrowOnFailure(); } [Fact] [Task(4)] public void Multiplication() { Prop.ForAll<(decimal, decimal)>(values => { var (value, factor) = values; Assert.Equal(new CurrencyAmount(factor * value, "HD"), factor * new CurrencyAmount(value, "HD")); }).QuickCheckThrowOnFailure(); } [Fact] [Task(4)] public void Multiplication_is_commutative() { Prop.ForAll<(decimal, decimal)>(values => { var (value, factor) = values; var amount = new CurrencyAmount(value, "HD"); Assert.Equal(amount * factor, factor * amount); }).QuickCheckThrowOnFailure(); } [Fact] [Task(4)] public void Division() { Prop.ForAll<(decimal, decimal)>(values => { var (value, divisor) = values; return Prop.When( divisor != 0, () => Assert.True(new CurrencyAmount(value, "HD") / divisor == new CurrencyAmount(value / divisor, "HD"))); }).QuickCheckThrowOnFailure(); } [Fact] [Task(5)] public void Cast_to_double() { Prop.ForAll(value => { Assert.Equal(Convert.ToDouble(value), (double)new CurrencyAmount(value, "HD")); }).QuickCheckThrowOnFailure(); } [Fact] [Task(6)] public void Cast_to_decimal() { Prop.ForAll(value => { decimal actual = new CurrencyAmount(value, "HD"); Assert.Equal(value, actual); }).QuickCheckThrowOnFailure(); } }