Issue when trying to read from table created using TestTables class

[Tamas Sule]

Hello, I’m having trouble working with the TestTables class: I’m writing a
test which hits a code path that uses IcebergGenerics.read, which fails
with the following error: Cannot load metadata: metadata file location is
null.  Looking at the TestTableOperations class, it doesn’t actually write
out the metadata json to the filesystem but rather keeps it in memory. Is
this a shortcoming of these test classes at the moment, or am I supposed to
use something else to test this? Thanks!