summaryrefslogtreecommitdiff
path: root/deps/npm/node_modules/function-bind/test/index.js
diff options
context:
space:
mode:
Diffstat (limited to 'deps/npm/node_modules/function-bind/test/index.js')
-rw-r--r--deps/npm/node_modules/function-bind/test/index.js252
1 files changed, 252 insertions, 0 deletions
diff --git a/deps/npm/node_modules/function-bind/test/index.js b/deps/npm/node_modules/function-bind/test/index.js
new file mode 100644
index 0000000000..2edecce2f0
--- /dev/null
+++ b/deps/npm/node_modules/function-bind/test/index.js
@@ -0,0 +1,252 @@
+// jscs:disable requireUseStrict
+
+var test = require('tape');
+
+var functionBind = require('../implementation');
+var getCurrentContext = function () { return this; };
+
+test('functionBind is a function', function (t) {
+ t.equal(typeof functionBind, 'function');
+ t.end();
+});
+
+test('non-functions', function (t) {
+ var nonFunctions = [true, false, [], {}, 42, 'foo', NaN, /a/g];
+ t.plan(nonFunctions.length);
+ for (var i = 0; i < nonFunctions.length; ++i) {
+ try { functionBind.call(nonFunctions[i]); } catch (ex) {
+ t.ok(ex instanceof TypeError, 'throws when given ' + String(nonFunctions[i]));
+ }
+ }
+ t.end();
+});
+
+test('without a context', function (t) {
+ t.test('binds properly', function (st) {
+ var args, context;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ context = this;
+ })
+ };
+ namespace.func(1, 2, 3);
+ st.deepEqual(args, [1, 2, 3]);
+ st.equal(context, getCurrentContext.call());
+ st.end();
+ });
+
+ t.test('binds properly, and still supplies bound arguments', function (st) {
+ var args, context;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ context = this;
+ }, undefined, 1, 2, 3)
+ };
+ namespace.func(4, 5, 6);
+ st.deepEqual(args, [1, 2, 3, 4, 5, 6]);
+ st.equal(context, getCurrentContext.call());
+ st.end();
+ });
+
+ t.test('returns properly', function (st) {
+ var args;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ return this;
+ }, null)
+ };
+ var context = namespace.func(1, 2, 3);
+ st.equal(context, getCurrentContext.call(), 'returned context is namespaced context');
+ st.deepEqual(args, [1, 2, 3], 'passed arguments are correct');
+ st.end();
+ });
+
+ t.test('returns properly with bound arguments', function (st) {
+ var args;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ return this;
+ }, null, 1, 2, 3)
+ };
+ var context = namespace.func(4, 5, 6);
+ st.equal(context, getCurrentContext.call(), 'returned context is namespaced context');
+ st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'passed arguments are correct');
+ st.end();
+ });
+
+ t.test('called as a constructor', function (st) {
+ var thunkify = function (value) {
+ return function () { return value; };
+ };
+ st.test('returns object value', function (sst) {
+ var expectedReturnValue = [1, 2, 3];
+ var Constructor = functionBind.call(thunkify(expectedReturnValue), null);
+ var result = new Constructor();
+ sst.equal(result, expectedReturnValue);
+ sst.end();
+ });
+
+ st.test('does not return primitive value', function (sst) {
+ var Constructor = functionBind.call(thunkify(42), null);
+ var result = new Constructor();
+ sst.notEqual(result, 42);
+ sst.end();
+ });
+
+ st.test('object from bound constructor is instance of original and bound constructor', function (sst) {
+ var A = function (x) {
+ this.name = x || 'A';
+ };
+ var B = functionBind.call(A, null, 'B');
+
+ var result = new B();
+ sst.ok(result instanceof B, 'result is instance of bound constructor');
+ sst.ok(result instanceof A, 'result is instance of original constructor');
+ sst.end();
+ });
+
+ st.end();
+ });
+
+ t.end();
+});
+
+test('with a context', function (t) {
+ t.test('with no bound arguments', function (st) {
+ var args, context;
+ var boundContext = {};
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ context = this;
+ }, boundContext)
+ };
+ namespace.func(1, 2, 3);
+ st.equal(context, boundContext, 'binds a context properly');
+ st.deepEqual(args, [1, 2, 3], 'supplies passed arguments');
+ st.end();
+ });
+
+ t.test('with bound arguments', function (st) {
+ var args, context;
+ var boundContext = {};
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ context = this;
+ }, boundContext, 1, 2, 3)
+ };
+ namespace.func(4, 5, 6);
+ st.equal(context, boundContext, 'binds a context properly');
+ st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'supplies bound and passed arguments');
+ st.end();
+ });
+
+ t.test('returns properly', function (st) {
+ var boundContext = {};
+ var args;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ return this;
+ }, boundContext)
+ };
+ var context = namespace.func(1, 2, 3);
+ st.equal(context, boundContext, 'returned context is bound context');
+ st.notEqual(context, getCurrentContext.call(), 'returned context is not lexical context');
+ st.deepEqual(args, [1, 2, 3], 'passed arguments are correct');
+ st.end();
+ });
+
+ t.test('returns properly with bound arguments', function (st) {
+ var boundContext = {};
+ var args;
+ var namespace = {
+ func: functionBind.call(function () {
+ args = Array.prototype.slice.call(arguments);
+ return this;
+ }, boundContext, 1, 2, 3)
+ };
+ var context = namespace.func(4, 5, 6);
+ st.equal(context, boundContext, 'returned context is bound context');
+ st.notEqual(context, getCurrentContext.call(), 'returned context is not lexical context');
+ st.deepEqual(args, [1, 2, 3, 4, 5, 6], 'passed arguments are correct');
+ st.end();
+ });
+
+ t.test('passes the correct arguments when called as a constructor', function (st) {
+ var expected = { name: 'Correct' };
+ var namespace = {
+ Func: functionBind.call(function (arg) {
+ return arg;
+ }, { name: 'Incorrect' })
+ };
+ var returned = new namespace.Func(expected);
+ st.equal(returned, expected, 'returns the right arg when called as a constructor');
+ st.end();
+ });
+
+ t.test('has the new instance\'s context when called as a constructor', function (st) {
+ var actualContext;
+ var expectedContext = { foo: 'bar' };
+ var namespace = {
+ Func: functionBind.call(function () {
+ actualContext = this;
+ }, expectedContext)
+ };
+ var result = new namespace.Func();
+ st.equal(result instanceof namespace.Func, true);
+ st.notEqual(actualContext, expectedContext);
+ st.end();
+ });
+
+ t.end();
+});
+
+test('bound function length', function (t) {
+ t.test('sets a correct length without thisArg', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; });
+ st.equal(subject.length, 3);
+ st.equal(subject(1, 2, 3), 6);
+ st.end();
+ });
+
+ t.test('sets a correct length with thisArg', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {});
+ st.equal(subject.length, 3);
+ st.equal(subject(1, 2, 3), 6);
+ st.end();
+ });
+
+ t.test('sets a correct length without thisArg and first argument', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; }, undefined, 1);
+ st.equal(subject.length, 2);
+ st.equal(subject(2, 3), 6);
+ st.end();
+ });
+
+ t.test('sets a correct length with thisArg and first argument', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {}, 1);
+ st.equal(subject.length, 2);
+ st.equal(subject(2, 3), 6);
+ st.end();
+ });
+
+ t.test('sets a correct length without thisArg and too many arguments', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; }, undefined, 1, 2, 3, 4);
+ st.equal(subject.length, 0);
+ st.equal(subject(), 6);
+ st.end();
+ });
+
+ t.test('sets a correct length with thisArg and too many arguments', function (st) {
+ var subject = functionBind.call(function (a, b, c) { return a + b + c; }, {}, 1, 2, 3, 4);
+ st.equal(subject.length, 0);
+ st.equal(subject(), 6);
+ st.end();
+ });
+});