Starting to write proper unit tests.

lib/hosting/startServerFluent.js

@@ -21,6 +21,9 @@ var ensureServerRunning = function * () {
 }
 
 var runTest = function (testDefinition, done) {
+    if (!testDefinition) throw new Error("The test definition must be specified.");
+    if (!testDefinition.runAgainst) throw new Error("The test definition must have a runAgainst method. Please see documentation.");
+
     var self = this;
     var deferred = Q.defer();
 

spec/unit/start_server_fluent_error_spec.js

@@ -2,11 +2,32 @@
 var assert = fixture.assert;
 var startServerFluent = fixture.testResources.startServerFluent;
 
-describe("when you ask for a port but the server has not been started", function () {
-    it("should throw an error", function () {
+describe("start server fluent interface", function () {
+
+    var underTest;
+
+    beforeEach(function () {
         var fakeExpress = {};
-        debugger;
-        var underTest = startServerFluent(fakeExpress);
-        assert.throws(function () { underTest.port }, "The port is not allocated until the server is started.")
+        underTest = startServerFluent(fakeExpress);
+    });
+
+    describe("when you ask for a port but the server has not been started", function () {
+        it("should throw an error", function () {
+            assert.throws(function () { underTest.port }, "The port is not allocated until the server is started.")
+        });
+    });
+
+    describe("when you call run test but don't pass test definition", function () {
+        it("should throw an error", function () {
+            assert.throws(function () { underTest.runTest(null, null) }, "The test definition must be specified.")
+        });
     });
-});
+
+    describe("when you call run test but pass invalid test definition", function () {
+        it("should throw an error", function () {
+            debugger;
+            assert.throws(function () { underTest.runTest({}, null) }, "The test definition must have a runAgainst method. Please see documentation.")
+        });
+    });
+
+})