Compile-time AST logging disabled by default

[bsl-zcs]

Can be enabled explicitly for recorder instance:

val expect = new Expecty() with CompileTimeLogging

Or, which is more convenient, per usage:

expect.logged { 1 == 2 }

Fixes #1

[buildhive]

Peter Niederwieser » expecty #20 SUCCESS
This pull request looks good
(what's this?)

[hrj]

Looks like a good PR.

[emchristiansen]

Ping. Could you pull and publish this?

[pniederw]

I didn't pull this because I couldn't reproduce the issue.

[emchristiansen]

It looks to me like this disables by default the verbose AST dumping Expecty does at compile time, but provides a way to turn it back on.
I'm not sure what you mean by "couldn't reproduce the issue".

[pniederw]

From what I remember, I only got verbose AST logging when I turned on debug logging for the compiler, which seems fine.

[emchristiansen]

Using the currently published jar, I'm getting verbose AST logging, and I do not believe I've enabled debug logging for the compiler.
Here's a project which demonstrates the issue: https://github.com/emchristiansen/Sundry

The Expecty bits are in ExpectyOverrides.scala and Logging.scala.

Running "sbt test:compile" in this project produces verbose AST logging for me.
You can click on the Travis CI link to see the build log which contains the AST dumps.

[pniederw]

Apparently, some environments show compiler info logging by default, and there is no compiler debug log level (at least not for macros). To solve this problem, I've introduced an org.expecty.debug system property, which needs to be set to true for AST logging to occur. This is now available in the fresh Expecty 0.10 release. Anyway, thanks for the pull request!