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describe("hx-push-url attribute", function() {
var KUTTY_HISTORY_CACHE = "htmx-history-cache";
beforeEach(function () {
this.server = makeServer();
clearWorkArea();
localStorage.removeItem(KUTTY_HISTORY_CACHE);
});
afterEach(function () {
this.server.restore();
clearWorkArea();
localStorage.removeItem(KUTTY_HISTORY_CACHE);
});
it("navigation should push an element into the cache ", function () {
this.server.respondWith("GET", "/test", "second");
getWorkArea().innerHTML.should.be.equal("");
var div = make('<div hx-push-url="true" hx-get="/test">first</div>');
div.click();
this.server.respond();
getWorkArea().textContent.should.equal("second")
var cache = JSON.parse(localStorage.getItem(KUTTY_HISTORY_CACHE));
cache.length.should.equal(1);
});
it("restore should return old value", function () {
this.server.respondWith("GET", "/test1", '<div id="d2" hx-push-url="true" hx-get="/test2" hx-swap="outerHTML settle:0">test1</div>');
this.server.respondWith("GET", "/test2", '<div id="d3" hx-push-url="true" hx-get="/test3" hx-swap="outerHTML settle:0">test2</div>');
make('<div id="d1" hx-push-url="true" hx-get="/test1" hx-swap="outerHTML settle:0">init</div>');
byId("d1").click();
this.server.respond();
var workArea = getWorkArea();
workArea.textContent.should.equal("test1")
byId("d2").click();
this.server.respond();
workArea.textContent.should.equal("test2")
var cache = JSON.parse(localStorage.getItem(KUTTY_HISTORY_CACHE));
cache.length.should.equal(2);
htmx._('restoreHistory')("/test1")
this.server.respond();
getWorkArea().textContent.should.equal("test1")
});
it("cache should only store 10 entries", function () {
var x = 0;
this.server.respondWith("GET", /test.*/, function(xhr){
x++;
xhr.respond(200, {}, '<div id="d1" hx-push-url="true" hx-get="/test' + x + '" hx-swap="outerHTML settle:0"></div>')
});
getWorkArea().innerHTML.should.be.equal("");
make('<div id="d1" hx-push-url="true" hx-get="/test" hx-swap="outerHTML settle:0"></div>');
for (var i = 0; i < 20; i++) { // issue 20 requests
byId("d1").click();
this.server.respond();
}
var cache = JSON.parse(localStorage.getItem(KUTTY_HISTORY_CACHE));
cache.length.should.equal(10); // should only be 10 elements
});
it("cache miss should issue another GET", function () {
this.server.respondWith("GET", "/test1", '<div id="d2" hx-push-url="true" hx-get="/test2" hx-swap="outerHTML settle:0">test1</div>');
this.server.respondWith("GET", "/test2", '<div id="d3" hx-push-url="true" hx-get="/test3" hx-swap="outerHTML settle:0">test2</div>');
make('<div id="d1" hx-push-url="true" hx-get="/test1" hx-swap="outerHTML settle:0">init</div>');
byId("d1").click();
this.server.respond();
var workArea = getWorkArea();
workArea.textContent.should.equal("test1")
byId("d2").click();
this.server.respond();
workArea.textContent.should.equal("test2")
var cache = JSON.parse(localStorage.getItem(KUTTY_HISTORY_CACHE));
cache.length.should.equal(2);
localStorage.removeItem(KUTTY_HISTORY_CACHE); // clear cache
htmx._('restoreHistory')("/test1")
this.server.respond();
getWorkArea().textContent.should.equal("test1")
});
function stringRepeat(str, num) {
num = Number(num);
var result = '';
while (true) {
if (num & 1) { // (1)
result += str;
}
num >>>= 1; // (2)
if (num <= 0) break;
str += str;
}
return result;
}
it("implementation details should be fast", function(){
// create an entry with a large content string (256k) and see how fast we can write and read it
// to local storage as a single entry
var entry = {url: stringRepeat("x", 32), content:stringRepeat("x", 256*1024)}
var array = [];
for (var i = 0; i < 10; i++) {
array.push(entry);
}
var start = performance.now();
var string = JSON.stringify(array);
localStorage.setItem(KUTTY_HISTORY_CACHE, string);
var reReadString = localStorage.getItem(KUTTY_HISTORY_CACHE);
var finalJson = JSON.parse(reReadString);
var end = performance.now();
var timeInMs = end - start;
chai.assert(timeInMs < 300, "Should take less than 300ms on most platforms");
})
it("navigation should push an element into the cache w/ data-* prefix", function () {
this.server.respondWith("GET", "/test", "second");
getWorkArea().innerHTML.should.be.equal("");
var div = make('<div data-hx-push-url="true" data-hx-get="/test">first</div>');
div.click();
this.server.respond();
getWorkArea().textContent.should.equal("second")
var cache = JSON.parse(localStorage.getItem(KUTTY_HISTORY_CACHE));
cache.length.should.equal(1);
});
});
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