add coverage to Context; remove unused Context#inspect() (mochajs#3057)

* add coverage to Context; remove unused Context#inspect()

* remove errant require()

lib/context.js

@@ -91,15 +91,3 @@ Context.prototype.retries = function (n) {
   this.runnable().retries(n);
   return this;
 };
-
-/**
- * Inspect the context void of `._runnable`.
- *
- * @api private
- * @return {string}
- */
-Context.prototype.inspect = function () {
-  return JSON.stringify(this, function (key, val) {
-    return key === 'runnable' || key === 'test' ? undefined : val;
-  }, 2);
-};

test/unit/context.spec.js

@@ -66,8 +66,16 @@ describe('Context Siblings', function () {
   });
 });
 
-describe('timeout()', function () {
-  it('should return the timeout', function () {
-    expect(this.timeout()).to.equal(200);
+describe('methods', function () {
+  describe('timeout()', function () {
+    it('should return the timeout', function () {
+      expect(this.timeout()).to.equal(200);
+    });
+  });
+
+  describe('retries', function () {
+    it('should return the number of retries', function () {
+      expect(this.retries()).to.equal(-1);
+    });
   });
 });