Tests

.travis.yml

@@ -0,0 +1,9 @@
+version: ~> 1.0
+language: node_js
+os:
+ - linux
+import:
+ - ljharb/travis-ci:node/all.yml
+ - ljharb/travis-ci:node/pretest.yml
+ - ljharb/travis-ci:node/posttest.yml
+ - ljharb/travis-ci:node/coverage.yml

package.json

@@ -21,7 +21,9 @@
 	"scripts": {
 		"lint": "eslint --ext=.js,.mjs .",
 		"pretest": "npm run lint",
-		"test": "echo \"Error: no test specified\" && exit 1"
+		"tests-only": "tape 'test/*'",
+		"test": "npm run tests-only",
+		"posttest": "aud --production"
 	},
 	"repository": {
 		"type": "git",
@@ -53,7 +55,9 @@
 	"homepage": "https://github.com/ljharb/call-bind#readme",
 	"devDependencies": {
 		"@ljharb/eslint-config": "^17.2.0",
-		"eslint": "^7.12.1"
+		"aud": "^1.1.2",
+		"eslint": "^7.12.1",
+		"tape": "^5.0.1"
 	},
 	"dependencies": {
 		"function-bind": "^1.1.1",

test/callBound.js

@@ -0,0 +1,55 @@
+'use strict';
+
+var test = require('tape');
+
+var callBound = require('../callBound');
+
+test('callBound', function (t) {
+	// static primitive
+	t.equal(callBound('Array.length'), Array.length, 'Array.length yields itself');
+	t.equal(callBound('%Array.length%'), Array.length, '%Array.length% yields itself');
+
+	// static non-function object
+	t.equal(callBound('Array.prototype'), Array.prototype, 'Array.prototype yields itself');
+	t.equal(callBound('%Array.prototype%'), Array.prototype, '%Array.prototype% yields itself');
+	t.equal(callBound('Array.constructor'), Array.constructor, 'Array.constructor yields itself');
+	t.equal(callBound('%Array.constructor%'), Array.constructor, '%Array.constructor% yields itself');
+
+	// static function
+	t.equal(callBound('Date.parse'), Date.parse, 'Date.parse yields itself');
+	t.equal(callBound('%Date.parse%'), Date.parse, '%Date.parse% yields itself');
+
+	// prototype primitive
+	t.equal(callBound('Error.prototype.message'), Error.prototype.message, 'Error.prototype.message yields itself');
+	t.equal(callBound('%Error.prototype.message%'), Error.prototype.message, '%Error.prototype.message% yields itself');
+
+	// prototype function
+	t.notEqual(callBound('Object.prototype.toString'), Object.prototype.toString, 'Object.prototype.toString does not yield itself');
+	t.notEqual(callBound('%Object.prototype.toString%'), Object.prototype.toString, '%Object.prototype.toString% does not yield itself');
+	t.equal(callBound('Object.prototype.toString')(true), Object.prototype.toString.call(true), 'call-bound Object.prototype.toString calls into the original');
+	t.equal(callBound('%Object.prototype.toString%')(true), Object.prototype.toString.call(true), 'call-bound %Object.prototype.toString% calls into the original');
+
+	t['throws'](
+		function () { callBound('does not exist'); },
+		SyntaxError,
+		'nonexistent intrinsic throws'
+	);
+	t['throws'](
+		function () { callBound('does not exist', true); },
+		SyntaxError,
+		'allowMissing arg still throws for unknown intrinsic'
+	);
+
+	/* globals WeakRef: false */
+	t.test('real but absent intrinsic', { skip: typeof WeakRef !== 'undefined' }, function (st) {
+		st['throws'](
+			function () { callBound('WeakRef'); },
+			TypeError,
+			'real but absent intrinsic throws'
+		);
+		st.equal(callBound('WeakRef', true), undefined, 'allowMissing arg avoids exception');
+		st.end();
+	});
+
+	t.end();
+});

test/index.js

@@ -0,0 +1,52 @@
+'use strict';
+
+var callBind = require('../');
+
+var test = require('tape');
+
+test('callBind', function (t) {
+	var sentinel = { sentinel: true };
+	var func = function (a, b) {
+		// eslint-disable-next-line no-invalid-this
+		return [this, a, b];
+	};
+	t.deepEqual(func(), [undefined, undefined, undefined], 'unbound func with too few args');
+	t.deepEqual(func(1, 2), [undefined, 1, 2], 'unbound func with right args');
+	t.deepEqual(func(1, 2, 3), [undefined, 1, 2], 'unbound func with too many args');
+
+	var bound = callBind(func);
+	t.deepEqual(bound(), [undefined, undefined, undefined], 'bound func with too few args');
+	t.deepEqual(bound(1, 2), [1, 2, undefined], 'bound func with right args');
+	t.deepEqual(bound(1, 2, 3), [1, 2, 3], 'bound func with too many args');
+
+	var boundR = callBind(func, sentinel);
+	t.deepEqual(boundR(), [sentinel, undefined, undefined], 'bound func with receiver, with too few args');
+	t.deepEqual(boundR(1, 2), [sentinel, 1, 2], 'bound func with receiver, with right args');
+	t.deepEqual(boundR(1, 2, 3), [sentinel, 1, 2], 'bound func with receiver, with too many args');
+
+	var boundArg = callBind(func, sentinel, 1);
+	t.deepEqual(boundArg(), [sentinel, 1, undefined], 'bound func with receiver and arg, with too few args');
+	t.deepEqual(boundArg(2), [sentinel, 1, 2], 'bound func with receiver and arg, with right arg');
+	t.deepEqual(boundArg(2, 3), [sentinel, 1, 2], 'bound func with receiver and arg, with too many args');
+
+	t.test('callBind.apply', function (st) {
+		var aBound = callBind.apply(func);
+		st.deepEqual(aBound(sentinel), [sentinel, undefined, undefined], 'apply-bound func with no args');
+		st.deepEqual(aBound(sentinel, [1], 4), [sentinel, 1, undefined], 'apply-bound func with too few args');
+		st.deepEqual(aBound(sentinel, [1, 2], 4), [sentinel, 1, 2], 'apply-bound func with right args');
+
+		var aBoundArg = callBind.apply(func);
+		st.deepEqual(aBoundArg(sentinel, [1, 2, 3], 4), [sentinel, 1, 2], 'apply-bound func with too many args');
+		st.deepEqual(aBoundArg(sentinel, [1, 2], 4), [sentinel, 1, 2], 'apply-bound func with right args');
+		st.deepEqual(aBoundArg(sentinel, [1], 4), [sentinel, 1, undefined], 'apply-bound func with too few args');
+
+		var aBoundR = callBind.apply(func, sentinel);
+		st.deepEqual(aBoundR([1, 2, 3], 4), [sentinel, 1, 2], 'apply-bound func with receiver and too many args');
+		st.deepEqual(aBoundR([1, 2], 4), [sentinel, 1, 2], 'apply-bound func with receiver and right args');
+		st.deepEqual(aBoundR([1], 4), [sentinel, 1, undefined], 'apply-bound func with receiver and too few args');
+
+		st.end();
+	});
+
+	t.end();
+});