public void FlexString_Basics()
{
string sample;
String8 sample8;
FlexString sampleF, sampleF2;
// Null handling
Assert.True(FlexString.IsNullOrEmpty((FlexString)null));
Assert.True(FlexString.IsNullOrEmpty((string)null));
Assert.True(FlexString.IsNullOrEmpty(""));
Assert.True(FlexString.IsNullOrEmpty(String8.Empty));
Assert.True(FlexString.IsNull((FlexString)null));
Assert.True(FlexString.IsNull((string)null));
sample = null;
sampleF = sample;
sample8 = sampleF;
Assert.True(FlexString.IsNullOrEmpty(sampleF));
//Null check with null strings
Assert.True(FlexString.IsNull(sample));
Assert.True(FlexString.IsNull(sampleF));
Assert.False(FlexString.IsNull(sample8));
// Implicit conversions
sample = "sample";
sampleF = sample;
sample8 = sampleF;
Assert.Equal("sample", sample8.ToString());
//Null check with populated strings
Assert.False(FlexString.IsNull(sample));
Assert.False(FlexString.IsNull(sampleF));
Assert.False(FlexString.IsNull(sample8));
sample8 = String8.ConvertExpensively("sample2");
sampleF = sample8;
sample = sampleF;
Assert.Equal("sample2", sample);
// CompareTo
Assert.Equal(0, sampleF.CompareTo(sample));
Assert.Equal(0, sampleF.CompareTo(sample8));
Assert.Equal(0, sampleF.CompareTo(sampleF));
sampleF = "sample3";
Assert.NotEqual(0, sampleF.CompareTo(sample));
Assert.NotEqual(0, sampleF.CompareTo(sample8));
sampleF2 = "sample3";
Assert.Equal(0, sampleF.CompareTo(sampleF2));
sampleF2 = "different";
Assert.NotEqual(0, sampleF.CompareTo(sampleF2));
}