add unit test for MathContext lost
add unit test for MathContext lost

scala/scala,slothspot/scala,jvican/scala,lrytz/scala,scala/scala,slothspot/scala,scala/scala,slothspot/scala,martijnhoekstra/scala,jvican/scala,felixmulder/scala,felixmulder/scala,shimib/scala,jvican/scala,felixmulder/scala,shimib/scala,jvican/scala,lrytz/scala,felixmulder/scala,shimib/scala,slothspot/scala,lrytz/scala,slothspot/scala,felixmulder/scala,lrytz/scala,felixmulder/scala,scala/scala,slothspot/scala,scala/scala,jvican/scala,slothspot/scala,shimib/scala,jvican/scala,lrytz/scala,martijnhoekstra/scala,lrytz/scala,shimib/scala,scala/scala,martijnhoekstra/scala,martijnhoekstra/scala,martijnhoekstra/scala,shimib/scala,martijnhoekstra/scala,jvican/scala,felixmulder/scala