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app_vue/node_modules/call-bind/test/index.js

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+'use strict';
+
+var callBind = require('../');
+var hasStrictMode = require('has-strict-mode')();
+var forEach = require('for-each');
+var inspect = require('object-inspect');
+var v = require('es-value-fixtures');
+
+var test = require('tape');
+
+/*
+ * older engines have length nonconfigurable
+ * in io.js v3, it is configurable except on bound functions, hence the .bind()
+ */
+var boundFnsHaveConfigurableLengths = require('set-function-length/env').boundFnsHaveConfigurableLengths;
+
+test('callBind', function (t) {
+	forEach(v.nonFunctions, function (nonFunction) {
+		t['throws'](
+			function () { callBind(nonFunction); },
+			TypeError,
+			inspect(nonFunction) + ' is not a function'
+		);
+	});
+
+	var sentinel = { sentinel: true };
+	var func = function (a, b) {
+		// eslint-disable-next-line no-invalid-this
+		return [!hasStrictMode && this === global ? undefined : this, a, b];
+	};
+	t.equal(func.length, 2, 'original function length is 2');
+	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.equal(bound.length, func.length + 1, 'function length is preserved', { skip: !boundFnsHaveConfigurableLengths });
+	t.deepEqual(bound(), [undefined, undefined, undefined], 'bound func with too few args');
+	t.deepEqual(bound(1, 2), [hasStrictMode ? 1 : Object(1), 2, undefined], 'bound func with right args');
+	t.deepEqual(bound(1, 2, 3), [hasStrictMode ? 1 : Object(1), 2, 3], 'bound func with too many args');
+
+	var boundR = callBind(func, sentinel);
+	t.equal(boundR.length, func.length, 'function length is preserved', { skip: !boundFnsHaveConfigurableLengths });
+	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.equal(boundArg.length, func.length - 1, 'function length is preserved', { skip: !boundFnsHaveConfigurableLengths });
+	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();
+});