Tidy up unit test files (#9340)

refs #9178

- first iteration of tidying up the unit tests
- this is useful in the current stage, because if i move files in the server folder, i need a clean folder/file structure to detect which tests needs to move
- this is a simple cleanup to reflect the current server folder structure

ghost/errors/test/errors.test.js

@@ -0,0 +1,70 @@
+var should = require('should'), // jshint ignore:line
+    common = require('../../../../server/lib/common');
+
+describe('Errors', function () {
+    it('Ensure we inherit from Error', function () {
+        var ghostError = new common.errors.GhostError();
+        (ghostError instanceof Error).should.eql(true);
+    });
+
+    describe('Inherite from other error', function () {
+        it('default', function () {
+            var someError = new Error(), ghostError;
+
+            someError.message = 'test';
+            someError.context = 'test';
+            someError.help = 'test';
+
+            ghostError = new common.errors.GhostError({err: someError});
+            ghostError.stack.should.match(/Error: test/);
+            ghostError.context.should.eql(someError.context);
+            ghostError.help.should.eql(someError.help);
+        });
+
+        it('has nested object', function () {
+            var someError = new Error(), ghostError;
+
+            someError.obj = {
+                a: 'b'
+            };
+
+            ghostError = new common.errors.GhostError({
+                err: someError
+            });
+
+            ghostError.obj.should.eql(someError.obj);
+        });
+
+        it('with custom attribute', function () {
+            var someError = new Error(), ghostError;
+
+            someError.context = 'test';
+
+            ghostError = new common.errors.GhostError({
+                err: someError,
+                context: 'context'
+            });
+
+            ghostError.context.should.eql('test');
+        });
+
+        it('with custom attribute', function () {
+            var someError = new Error(), ghostError;
+
+            ghostError = new common.errors.GhostError({
+                err: someError,
+                message: 'test'
+            });
+
+            ghostError.message.should.eql('test');
+        });
+
+        it('error is string', function () {
+            var ghostError = new common.errors.GhostError({
+                err: 'string'
+            });
+
+            ghostError.stack.should.match(/Error: string/);
+        });
+    });
+});