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test-takeWhile.js
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QUnit.test("takeWhile num array", function (assert) {
var data = [1, 2, 3, 2, 1];
var result = Stream(data)
.takeWhile(function (num) {
return num < 3;
})
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0], 1);
assert.equal(result[1], 2);
// assert original data is untouched
assert.equal(data.length, 5);
assert.equal(data[0], 1);
assert.equal(data[1], 2);
assert.equal(data[2], 3);
assert.equal(data[3], 2);
assert.equal(data[4], 1);
});
QUnit.test("takeWhile object", function (assert) {
var data = {a: 1, b: 2, c: 3, d: 2};
var result = Stream(data)
.takeWhile(function (num) {
return num < 3;
})
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0], 1);
assert.equal(result[1], 2);
// assert original data is untouched
assert.equal(data.a, 1);
assert.equal(data.b, 2);
assert.equal(data.c, 3);
assert.equal(data.d, 2);
});
QUnit.test("takeWhile empty", function (assert) {
var result = Stream([])
.takeWhile(function () {
return true;
})
.toArray();
assert.equal(result.length, 0);
});
QUnit.test("takeWhile via regexp literal", function (assert) {
var data = ["a1", "a2", "b3", "a4"];
var result = Stream(data)
.takeWhile(/a.*/)
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0], "a1");
assert.equal(result[1], "a2");
// assert original data is untouched
assert.equal(data.length, 4);
assert.equal(data[0], "a1");
assert.equal(data[1], "a2");
assert.equal(data[2], "b3");
assert.equal(data[3], "a4");
});
QUnit.test("takeWhile via regexp object", function (assert) {
var data = ["a1", "a2", "b3", "a4"];
var result = Stream(data)
.takeWhile(new RegExp("a.*"))
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0], "a1");
assert.equal(result[1], "a2");
// assert original data is untouched
assert.equal(data.length, 4);
assert.equal(data[0], "a1");
assert.equal(data[1], "a2");
assert.equal(data[2], "b3");
assert.equal(data[3], "a4");
});
QUnit.test("takeWhile via sample object (depth=1)", function (assert) {
var data = [
{a: 1, b: 1},
{a: 1, b: 2},
{a: 2, b: 3},
{a: 1, b: 4}
];
var result = Stream(data)
.takeWhile({a: 1})
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0].a, 1);
assert.equal(result[0].b, 1);
assert.equal(result[1].a, 1);
assert.equal(result[1].b, 2);
});
QUnit.test("takeWhile via sample object (depth=2)", function (assert) {
var data = [
{a: 1, b: 1, c: {x: "x1"}},
{a: 1, b: 2, c: {x: "x1"}},
{a: 2, b: 3, c: {x: "x3"}},
{a: 1, b: 4, c: {x: "x1"}}
];
var result = Stream(data)
.takeWhile({a: 1, c: {x: "x1"}})
.toArray();
assert.equal(result.length, 2);
assert.equal(result[0].a, 1);
assert.equal(result[0].b, 1);
assert.equal(result[0].c.x, "x1");
assert.equal(result[1].a, 1);
assert.equal(result[1].b, 2);
assert.equal(result[1].c.x, "x1");
});