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OptionCoalesceTests.cs
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OptionCoalesceTests.cs
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using Xunit;
using LanguageExt;
using static LanguageExt.Prelude;
namespace LanguageExt.Tests
{
public class OptionCoalesceTests
{
[Fact]
public void OptionCoalesceTest1()
{
var optional = Some(123);
var value = optional || 456;
Assert.True(value == 123);
}
[Fact]
public void OptionCoalesceTest2()
{
Option<int> optional = None;
var value = optional || 456;
Assert.True(value == 456);
}
[Fact]
public void OptionCoalesceTest3()
{
Option<int> optional1 = None;
Option<int> optional2 = None;
var value = optional1 || optional2 || 456;
Assert.True(value == 456);
}
[Fact]
public void OptionUnsafeCoalesceTest1()
{
var optional = Some(123);
var value = optional || 456;
Assert.True(value == 123);
}
[Fact]
public void OptionUnsafeCoalesceTest2()
{
OptionUnsafe<int> optional = None;
var value = optional || 456;
Assert.True(value == 456);
}
[Fact]
public void OptionUnsafeCoalesceTest3()
{
OptionUnsafe<string> optional1 = None;
OptionUnsafe<string> optional2 = None;
var value = optional1 || optional2 || SomeUnsafe((string)null);
Assert.True(value == SomeUnsafe((string)null));
}
[Fact]
public void OptionUnsafeCoalesceTest3a()
{
OptionUnsafe<string> optional1 = None;
OptionUnsafe<string> optional2 = None;
var value = optional1 || optional2 || SomeUnsafe((string)null);
Assert.True(value == null);
}
[Fact]
public void OptionUnsafeCoalesceTest3b()
{
OptionUnsafe<string> optional1 = None;
OptionUnsafe<string> optional2 = None;
var value = optional1 || optional2 || null;
Assert.True(value == null);
}
[Fact]
public void OptionUnsafeCoalesceTest3c()
{
OptionUnsafe<string> optional1 = None;
OptionUnsafe<string> optional2 = None;
var value = optional1 || optional2 || null;
Assert.True(value == SomeUnsafe((string)null));
}
[Fact]
public void OptionUnsafeCoalesceTest3d()
{
OptionUnsafe<string> optional1 = None;
OptionUnsafe<string> optional2 = None;
var value = optional1 || optional2;
Assert.False(value == SomeUnsafe((string)null));
}
[Fact]
public void OptionUnsafeCoalesceTest4()
{
OptionUnsafe<int> optional1 = None;
OptionUnsafe<int> optional2 = None;
var value = optional1 || optional2 || 456;
Assert.True(value == 456);
}
}
}