Refactor error message to account for negate comparisons

The message return on negate clause was not expected. This makes it negative to match expectation. This also add tests for the change, and renames some tests to make it more clear.

src/core/matchers/toHaveSpyInteractions.js

@@ -1,4 +1,4 @@
-getJasmineRequireObj().toHaveSpyInteractions = function(j$) {
+getJasmineRequireObj().toHaveSpyInteractions = function (j$) {
   var getErrorMsg = j$.formatErrorMsg(
     '<toHaveSpyInteractions>',
     'expect(<spyObj>).toHaveSpyInteractions()'
@@ -14,7 +14,7 @@ getJasmineRequireObj().toHaveSpyInteractions = function(j$) {
    */
   function toHaveSpyInteractions(matchersUtil) {
     return {
-      compare: function(actual) {
+      compare: function (actual) {
         var result = {};
 
         if (!j$.isObject_(actual)) {
@@ -48,16 +48,18 @@ getJasmineRequireObj().toHaveSpyInteractions = function(j$) {
           );
         }
 
-        let resultMessage = 'Expected spy object spies to have been called';
+        let resultMessage;
         if (result.pass) {
-          resultMessage += ', the following spies were called: ';
-          resultMessage += calledSpies
-            .map(([spyName, spyCount]) => {
+          resultMessage =
+            'Expected spy object spies not to have been called, ' +
+            'but the following spies were called: ';
+          resultMessage += calledSpies.map(([spyName, spyCount]) => {
               return `${spyName} called ${spyCount} time(s)`;
-            })
-            .join(', ');
+          }).join(', ');
         } else {
-          resultMessage += ', but no spies were called.';
+          resultMessage =
+            'Expected spy object spies to have been called, ' +
+            'but no spies were called.';
         }
         result.message = resultMessage;