Convert tests for same assertion to unit tests

lib/assertions/same.test.js

@@ -1,95 +1,132 @@
 "use strict";
 
 var assert = require("assert");
-var referee = require("../referee");
+var proxyquire = require("proxyquire").noCallThru();
+var sinon = require("sinon");
 
 var obj = { id: 42 };
 var obj2 = { id: 42 };
 
-describe("assert.same", function() {
-    it("should pass when comparing object to itself", function() {
-        referee.assert.same(obj, obj);
-    });
+describe("same factory", function() {
+    beforeEach(function() {
+        this.fakeActualAndExpectedMessageValues =
+            "866c5b01-0028-4cf2-8dd7-9ef99bbc53b0";
 
-    it("should pass when comparing strings", function() {
-        referee.assert.same("Hey", "Hey");
-    });
+        var factory = proxyquire("./same", {
+            "../actual-and-expected-message-values": this
+                .fakeActualAndExpectedMessageValues
+        });
 
-    it("should pass when comparing booleans", function() {
-        referee.assert.same(true, true);
-    });
+        this.fakeReferee = {
+            add: sinon.fake()
+        };
 
-    it("should pass when comparing infinity", function() {
-        referee.assert.same(Infinity, Infinity);
-    });
+        factory(this.fakeReferee);
 
-    it("should pass when comparing numbers", function() {
-        referee.assert.same(32, 32);
+        this.options = this.fakeReferee.add.args[0][1];
     });
 
-    it("should pass when comparing null to null", function() {
-        referee.assert.same(null, null);
+    it("calls referee.add with 'same' as name", function() {
+        assert(this.fakeReferee.add.calledWith("same"));
     });
 
-    it("should pass when comparing undefined to undefined", function() {
-        referee.assert.same(undefined, undefined);
+    describe(".assert", function() {
+        context("when comparing object to itself", function() {
+            it("returns true", function() {
+                assert(this.options.assert(obj, obj));
+            });
+        });
+
+        context("when comparing strings", function() {
+            it("returns true", function() {
+                assert(this.options.assert("Hey", "Hey"));
+            });
+        });
+
+        context("when comparing booleans", function() {
+            it("returns true", function() {
+                assert(this.options.assert(true, true));
+                assert(this.options.assert(false, false));
+            });
+        });
+
+        context("when comparing Infinity", function() {
+            it("returns true", function() {
+                assert(this.options.assert(Infinity, Infinity));
+            });
+        });
+
+        context("when comparing numbers", function() {
+            it("returns true", function() {
+                assert(this.options.assert(32, 32));
+            });
+        });
+
+        context("when comparing null with null", function() {
+            it("returns true", function() {
+                assert(this.options.assert(null, null));
+            });
+        });
+
+        context("when comparing undefined with undefined", function() {
+            it("returns true", function() {
+                assert(this.options.assert(undefined, undefined));
+            });
+        });
+
+        context("when comparing NaN with NaN", function() {
+            it("returns true", function() {
+                assert(this.options.assert(NaN, NaN));
+            });
+        });
+
+        context("when comparing different objects", function() {
+            it("returns false", function() {
+                assert.equal(this.options.assert(obj, obj2), false);
+            });
+        });
+
+        context("when comparing without coercion", function() {
+            it("returns false", function() {
+                assert.equal(this.options.assert(666, "666"), false);
+                assert.equal(this.options.assert("666", 666), false);
+            });
+        });
+
+        context("when comparing -0 to +0", function() {
+            it("returns false", function() {
+                assert.equal(this.options.assert(-0, +0), false);
+            });
+        });
     });
 
-    it("should pass when comparing NaN to NaN", function() {
-        referee.assert.same(NaN, NaN);
+    describe(".assertMessage", function() {
+        it("is '${customMessage}${actual} expected to be the same object as ${expected}'", function() {
+            assert.equal(
+                this.options.assertMessage,
+                "${customMessage}${actual} expected to be the same object as ${expected}"
+            );
+        });
     });
 
-    it("should fail when comparing different objects", function() {
-        assert.throws(
-            function() {
-                referee.assert.same(obj, obj2);
-            },
-            function(error) {
-                assert.equal(error.code, "ERR_ASSERTION");
-                assert.equal(
-                    error.message,
-                    "[assert.same] { id: 42 } expected to be the same object as { id: 42 }"
-                );
-                assert.equal(error.name, "AssertionError");
-                assert.equal(error.operator, "assert.same");
-                return true;
-            }
-        );
+    describe(".refuteMessage", function() {
+        it("is '${customMessage}${actual} expected not to be the same object as ${expected}'", function() {
+            assert.equal(
+                this.options.refuteMessage,
+                "${customMessage}${actual} expected not to be the same object as ${expected}"
+            );
+        });
     });
 
-    it("should fail when comparing without coercion", function() {
-        assert.throws(
-            function() {
-                referee.assert.same(666, "666");
-            },
-            function(error) {
-                assert.equal(error.code, "ERR_ASSERTION");
-                assert.equal(
-                    error.message,
-                    "[assert.same] 666 expected to be the same object as '666'"
-                );
-                assert.equal(error.name, "AssertionError");
-                assert.equal(error.operator, "assert.same");
-                return true;
-            }
-        );
+    describe(".expectation", function() {
+        it("is 'toBe'", function() {
+            assert.equal(this.options.expectation, "toBe");
+        });
     });
 
-    it("should fail when comparing -0 to +0", function() {
-        assert.throws(
-            function() {
-                referee.assert.same(-0, +0);
-            },
-            function(error) {
-                assert.equal(error.code, "ERR_ASSERTION");
-                assert.equal(
-                    error.message,
-                    "[assert.same] -0 expected to be the same object as 0"
-                );
-                assert.equal(error.name, "AssertionError");
-                assert.equal(error.operator, "assert.same");
-                return true;
-            }
-        );
+    describe(".values", function() {
+        it("delegates to '../actual-and-expected-message-values'", function() {
+            assert.equal(this.options.values, this.fakeActualAndExpectedMessageValues);
+        });
     });
 });