improved coverage of baserollingfilestream

test/streams/BaseRollingFileStream-test.js

@@ -0,0 +1,83 @@
+"use strict";
+var vows = require('vows')
+, assert = require('assert')
+, fs = require('fs')
+, sandbox = require('sandboxed-module');
+
+vows.describe('../../lib/streams/BaseRollingFileStream').addBatch({
+  'when node version < 0.10.0': {
+    topic: function() {
+      var streamLib = sandbox.load(
+        '../../lib/streams/BaseRollingFileStream',
+        {
+          globals: {
+            process: {
+              version: '0.8.11'
+            }
+          }
+        }
+      );
+      return streamLib.required;
+    },
+    'it should use readable-stream to maintain compatibility': function(required) {
+      assert.ok(required['readable-stream']);
+      assert.ok(!required.stream);
+    }
+  },
+
+  'when node version > 0.10.0': {
+    topic: function() {
+      var streamLib = sandbox.load(
+        '../../lib/streams/BaseRollingFileStream',
+        {
+          globals: {
+            process: {
+              version: '0.10.1'
+            }
+          }
+        }
+      );
+      return streamLib.required;
+    },
+    'it should use the core stream module': function(required) {
+      assert.ok(required.stream);
+      assert.ok(!required['readable-stream']);
+    }
+  },
+
+  'when no filename is passed': {
+    topic: require('../../lib/streams/BaseRollingFileStream'),
+    'it should throw an error': function(BaseRollingFileStream) {
+      try {
+        new BaseRollingFileStream();
+        assert.fail('should not get here');
+      } catch (e) {
+        assert.ok(e);
+      }
+    }
+  },
+
+  'default behaviour': {
+    topic: function() {
+      var BaseRollingFileStream = require('../../lib/streams/BaseRollingFileStream')
+      , stream = new BaseRollingFileStream('basetest.log');
+      return stream;
+    },
+    teardown: function() {
+      try {
+        fs.unlink('basetest.log');
+      } catch (e) {
+        console.error("could not remove basetest.log", e);
+      }
+    },
+    'it should not want to roll': function(stream) {
+      assert.isFalse(stream.shouldRoll());
+    },
+    'it should not roll': function(stream) {
+      var cbCalled = false;
+      //just calls the callback straight away, no async calls
+      stream.roll('basetest.log', function() { cbCalled = true; });
+      assert.isTrue(cbCalled);
+    }
+  }
+}).exportTo(module);