Added ability to turn on debug logging via environment variable

For the grunt-karma-coveralls project, I need to be able to turn on
debug level logging but without using `process.argv`. This will allow me
to do so.

This addresses this issue:
https://github.com/mattjmorrison/grunt-karma-coveralls/issues/2

and can be fixed with this commit:
https://github.com/mattjmorrison/grunt-karma-coveralls/commit/4bd6e2b58647dda4a6335fa6077334d8021e23c0

1 files changed, 21 insertions, 0 deletions

diff --git a/test/logger.js b/test/logger.js
index c6899db..61d20bc 100644
--- a/test/logger.js
+++ b/test/logger.js
@@ -8,4 +8,25 @@ describe("logger", function(){
     var logger = require('../index').logger();
     logger.level.should.equal('debug');
   });
+
+  it ("should log at debug level when NODE_COVERALLS_DEBUG is set in env", function(){
+    process.argv = [];
+    process.env.NODE_COVERALLS_DEBUG = 1;
+    var logger = require('../index').logger();
+    logger.level.should.equal('debug');
+  });
+
+  it ("should log at debug level when NODE_COVERALLS_DEBUG is set in env as a string", function(){
+    process.argv = [];
+    process.env.NODE_COVERALLS_DEBUG = '1';
+    var logger = require('../index').logger();
+    logger.level.should.equal('debug');
+  });
+
+  it ("should log at warn level when NODE_COVERALLS_DEBUG not set and no --verbose", function(){
+    process.argv = [];
+    process.env.NODE_COVERALLS_DEBUG = 0;
+    var logger = require('../index').logger();
+    logger.level.should.equal('warn');
+  });
 });