From 8ba809ded14de725dd58ca0b14cc51ba360efb5d Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Wed, 16 May 2018 00:07:06 -0400
Subject: [PATCH] add snapshot test

---
 .../expected-bundle.js                        | 589 ++++++++++++++++++
 .../each-block-keyed-animated/expected.js     | 131 ++++
 .../each-block-keyed-animated/input.html      |  23 +
 3 files changed, 743 insertions(+)
 create mode 100644 test/js/samples/each-block-keyed-animated/expected-bundle.js
 create mode 100644 test/js/samples/each-block-keyed-animated/expected.js
 create mode 100644 test/js/samples/each-block-keyed-animated/input.html

diff --git a/test/js/samples/each-block-keyed-animated/expected-bundle.js b/test/js/samples/each-block-keyed-animated/expected-bundle.js
new file mode 100644
index 0000000000..54876c6152
--- /dev/null
+++ b/test/js/samples/each-block-keyed-animated/expected-bundle.js
@@ -0,0 +1,589 @@
+function noop() {}
+
+function assign(tar, src) {
+	for (var k in src) tar[k] = src[k];
+	return tar;
+}
+
+function appendNode(node, target) {
+	target.appendChild(node);
+}
+
+function insertNode(node, target, anchor) {
+	target.insertBefore(node, anchor);
+}
+
+function detachNode(node) {
+	node.parentNode.removeChild(node);
+}
+
+function createElement(name) {
+	return document.createElement(name);
+}
+
+function createText(data) {
+	return document.createTextNode(data);
+}
+
+function createComment() {
+	return document.createComment('');
+}
+
+function linear(t) {
+	return t;
+}
+
+function generateRule({ a, b, delta, duration }, ease, fn) {
+	const step = 16.666 / duration;
+	let keyframes = '{\n';
+
+	for (let p = 0; p <= 1; p += step) {
+		const t = a + delta * ease(p);
+		keyframes += p * 100 + `%{${fn(t, 1 - t)}}\n`;
+	}
+
+	return keyframes + `100% {${fn(b, 1 - b)}}\n}`;
+}
+
+// https://github.com/darkskyapp/string-hash/blob/master/index.js
+function hash(str) {
+	let hash = 5381;
+	let i = str.length;
+
+	while (i--) hash = ((hash << 5) - hash) ^ str.charCodeAt(i);
+	return hash >>> 0;
+}
+
+var transitionManager = {
+	running: false,
+	transitions: [],
+	bound: null,
+	stylesheet: null,
+	activeRules: {},
+	promise: null,
+
+	add(transition) {
+		this.transitions.push(transition);
+
+		if (!this.running) {
+			this.running = true;
+			requestAnimationFrame(this.bound || (this.bound = this.next.bind(this)));
+		}
+	},
+
+	addRule(rule, name) {
+		if (!this.stylesheet) {
+			const style = createElement('style');
+			document.head.appendChild(style);
+			transitionManager.stylesheet = style.sheet;
+		}
+
+		if (!this.activeRules[name]) {
+			this.activeRules[name] = true;
+			this.stylesheet.insertRule(`@keyframes ${name} ${rule}`, this.stylesheet.cssRules.length);
+		}
+	},
+
+	next() {
+		this.running = false;
+
+		const now = window.performance.now();
+		let i = this.transitions.length;
+
+		while (i--) {
+			const transition = this.transitions[i];
+
+			if (transition.program && now >= transition.program.end) {
+				transition.done();
+			}
+
+			if (transition.pending && now >= transition.pending.start) {
+				transition.start(transition.pending);
+			}
+
+			if (transition.running) {
+				transition.update(now);
+				this.running = true;
+			} else if (!transition.pending) {
+				this.transitions.splice(i, 1);
+			}
+		}
+
+		if (this.running) {
+			requestAnimationFrame(this.bound);
+		} else if (this.stylesheet) {
+			let i = this.stylesheet.cssRules.length;
+			while (i--) this.stylesheet.deleteRule(i);
+			this.activeRules = {};
+		}
+	},
+
+	deleteRule(node, name) {
+		node.style.animation = node.style.animation
+			.split(', ')
+			.filter(anim => anim && anim.indexOf(name) === -1)
+			.join(', ');
+	},
+
+	groupOutros() {
+		this.outros = {
+			remaining: 0,
+			callbacks: []
+		};
+	},
+
+	wait() {
+		if (!transitionManager.promise) {
+			transitionManager.promise = Promise.resolve();
+			transitionManager.promise.then(() => {
+				transitionManager.promise = null;
+			});
+		}
+
+		return transitionManager.promise;
+	}
+};
+
+function wrapAnimation(node, from, fn, params) {
+	if (!from) return;
+
+	const to = node.getBoundingClientRect();
+	if (from.left === to.left && from.right === to.right && from.top === to.top && from.bottom === to.bottom) return;
+
+	const info = fn(node, { from, to }, params);
+
+	const duration = 'duration' in info ? info.duration : 300;
+	const delay = 'delay' in info ? info.delay : 0;
+	const ease = info.easing || linear;
+	const start = window.performance.now() + delay;
+	const end = start + duration;
+
+	const program = {
+		a: 0,
+		t: 0,
+		b: 1,
+		delta: 1,
+		duration,
+		start,
+		end
+	};
+
+	const cssText = node.style.cssText;
+
+	const animation = {
+		pending: delay ? program : null,
+		program: delay ? null : program,
+		running: true,
+
+		start() {
+			if (info.css) {
+				if (delay) node.style.cssText = cssText;
+
+				const rule = generateRule(program, ease, info.css);
+				program.name = `__svelte_${hash(rule)}`;
+
+				transitionManager.addRule(rule, program.name);
+
+				node.style.animation = (node.style.animation || '')
+					.split(', ')
+					.filter(anim => anim && (program.delta < 0 || !/__svelte/.test(anim)))
+					.concat(`${program.name} ${program.duration}ms linear 1 forwards`)
+					.join(', ');
+			}
+
+			animation.program = program;
+			animation.pending = null;
+		},
+
+		update: now => {
+			const p = now - program.start;
+			const t = program.a + program.delta * ease(p / program.duration);
+			if (info.tick) info.tick(t, 1 - t);
+		},
+
+		done() {
+			if (info.tick) info.tick(1, 0);
+			animation.stop();
+		},
+
+		stop() {
+			if (info.css) transitionManager.deleteRule(node, program.name);
+			animation.running = false;
+		}
+	};
+
+	transitionManager.add(animation);
+
+	if (info.tick) info.tick(0, 1);
+
+	if (delay) {
+		if (info.css) node.style.cssText += info.css(0, 1);
+	} else {
+		animation.start();
+	}
+
+	return animation;
+}
+
+function fixPosition(node) {
+	const style = getComputedStyle(node);
+
+	if (style.position !== 'absolute' && style.position !== 'fixed') {
+		const { width, height } = style;
+		const a = node.getBoundingClientRect();
+		node.style.position = 'absolute';
+		node.style.width = width;
+		node.style.height = height;
+		const b = node.getBoundingClientRect();
+
+		if (a.left !== b.left || a.top !== b.top) {
+			const style = getComputedStyle(node);
+			const transform = style.transform === 'none' ? '' : style.transform;
+
+			node.style.transform = `${transform} translate(${a.left - b.left}px, ${a.top - b.top}px)`;
+		}
+	}
+}
+
+function destroyBlock(block, lookup) {
+	block.d(1);
+	lookup[block.key] = null;
+}
+
+function outroAndDestroyBlock(block, lookup) {
+	block.o(function() {
+		destroyBlock(block, lookup);
+	});
+}
+
+function fixAndOutroAndDestroyBlock(block, lookup) {
+	block.f();
+	outroAndDestroyBlock(block, lookup);
+}
+
+function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx, list, lookup, node, destroy, create_each_block, intro_method, next, get_context) {
+	var o = old_blocks.length;
+	var n = list.length;
+
+	var i = o;
+	var old_indexes = {};
+	while (i--) old_indexes[old_blocks[i].key] = i;
+
+	var new_blocks = [];
+	var new_lookup = {};
+	var deltas = {};
+
+	var i = n;
+	while (i--) {
+		var child_ctx = get_context(ctx, list, i);
+		var key = get_key(child_ctx);
+		var block = lookup[key];
+
+		if (!block) {
+			block = create_each_block(component, key, child_ctx);
+			block.c();
+		} else if (dynamic) {
+			block.p(changed, child_ctx);
+		}
+
+		new_blocks[i] = new_lookup[key] = block;
+
+		if (key in old_indexes) deltas[key] = Math.abs(i - old_indexes[key]);
+	}
+
+	var will_move = {};
+	var did_move = {};
+
+	function insert(block) {
+		block[intro_method](node, next);
+		lookup[block.key] = block;
+		next = block.first;
+		n--;
+	}
+
+	while (o && n) {
+		var new_block = new_blocks[n - 1];
+		var old_block = old_blocks[o - 1];
+		var new_key = new_block.key;
+		var old_key = old_block.key;
+
+		if (new_block === old_block) {
+			// do nothing
+			next = new_block.first;
+			o--;
+			n--;
+		}
+
+		else if (!new_lookup[old_key]) {
+			// remove old block
+			destroy(old_block, lookup);
+			o--;
+		}
+
+		else if (!lookup[new_key] || will_move[new_key]) {
+			insert(new_block);
+		}
+
+		else if (did_move[old_key]) {
+			o--;
+
+		} else if (deltas[new_key] > deltas[old_key]) {
+			did_move[new_key] = true;
+			insert(new_block);
+
+		} else {
+			will_move[old_key] = true;
+			o--;
+		}
+	}
+
+	while (o--) {
+		var old_block = old_blocks[o];
+		if (!new_lookup[old_block.key]) destroy(old_block, lookup);
+	}
+
+	while (n) insert(new_blocks[n - 1]);
+
+	return new_blocks;
+}
+
+function blankObject() {
+	return Object.create(null);
+}
+
+function destroy(detach) {
+	this.destroy = noop;
+	this.fire('destroy');
+	this.set = noop;
+
+	this._fragment.d(detach !== false);
+	this._fragment = null;
+	this._state = {};
+}
+
+function _differs(a, b) {
+	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
+}
+
+function fire(eventName, data) {
+	var handlers =
+		eventName in this._handlers && this._handlers[eventName].slice();
+	if (!handlers) return;
+
+	for (var i = 0; i < handlers.length; i += 1) {
+		var handler = handlers[i];
+
+		if (!handler.__calling) {
+			handler.__calling = true;
+			handler.call(this, data);
+			handler.__calling = false;
+		}
+	}
+}
+
+function get() {
+	return this._state;
+}
+
+function init(component, options) {
+	component._handlers = blankObject();
+	component._bind = options._bind;
+
+	component.options = options;
+	component.root = options.root || component;
+	component.store = component.root.store || options.store;
+}
+
+function on(eventName, handler) {
+	var handlers = this._handlers[eventName] || (this._handlers[eventName] = []);
+	handlers.push(handler);
+
+	return {
+		cancel: function() {
+			var index = handlers.indexOf(handler);
+			if (~index) handlers.splice(index, 1);
+		}
+	};
+}
+
+function set(newState) {
+	this._set(assign({}, newState));
+	if (this.root._lock) return;
+	this.root._lock = true;
+	callAll(this.root._beforecreate);
+	callAll(this.root._oncreate);
+	callAll(this.root._aftercreate);
+	this.root._lock = false;
+}
+
+function _set(newState) {
+	var oldState = this._state,
+		changed = {},
+		dirty = false;
+
+	for (var key in newState) {
+		if (this._differs(newState[key], oldState[key])) changed[key] = dirty = true;
+	}
+	if (!dirty) return;
+
+	this._state = assign(assign({}, oldState), newState);
+	this._recompute(changed, this._state);
+	if (this._bind) this._bind(changed, this._state);
+
+	if (this._fragment) {
+		this.fire("state", { changed: changed, current: this._state, previous: oldState });
+		this._fragment.p(changed, this._state);
+		this.fire("update", { changed: changed, current: this._state, previous: oldState });
+	}
+}
+
+function callAll(fns) {
+	while (fns && fns.length) fns.shift()();
+}
+
+function _mount(target, anchor) {
+	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
+}
+
+var proto = {
+	destroy,
+	get,
+	fire,
+	on,
+	set,
+	_recompute: noop,
+	_set,
+	_mount,
+	_differs
+};
+
+/* generated by Svelte vX.Y.Z */
+
+function foo(node, animation, params) {
+	const dx = animation.from.left - animation.to.left;
+	const dy = animation.from.top - animation.to.top;
+
+	return {
+		delay: params.delay,
+		duration: 100,
+		tick: (t, u) => {
+			node.dx = u * dx;
+			node.dy = u * dy;
+		}
+	};
+}
+function create_main_fragment(component, ctx) {
+	var each_blocks_1 = [], each_lookup = blankObject(), each_anchor;
+
+	var each_value = ctx.things;
+
+	const get_key = ctx => ctx.thing.id;
+
+	for (var i = 0; i < each_value.length; i += 1) {
+		let child_ctx = get_each_context(ctx, each_value, i);
+		let key = get_key(child_ctx);
+		each_blocks_1[i] = each_lookup[key] = create_each_block(component, key, child_ctx);
+	}
+
+	return {
+		c() {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].c();
+
+			each_anchor = createComment();
+		},
+
+		m(target, anchor) {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].m(target, anchor);
+
+			insertNode(each_anchor, target, anchor);
+		},
+
+		p(changed, ctx) {
+			const each_value = ctx.things;
+			for (let i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].r();
+			each_blocks_1 = updateKeyedEach(each_blocks_1, component, changed, get_key, 1, ctx, each_value, each_lookup, each_anchor.parentNode, fixAndOutroAndDestroyBlock, create_each_block, "m", each_anchor, get_each_context);
+			for (let i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].a();
+		},
+
+		d(detach) {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].d(detach);
+
+			if (detach) {
+				detachNode(each_anchor);
+			}
+		}
+	};
+}
+
+// (1:0) {#each things as thing (thing.id)}
+function create_each_block(component, key_1, ctx) {
+	var div, text_value = ctx.thing.name, text, rect, animation;
+
+	return {
+		key: key_1,
+
+		first: null,
+
+		c() {
+			div = createElement("div");
+			text = createText(text_value);
+			this.first = div;
+		},
+
+		m(target, anchor) {
+			insertNode(div, target, anchor);
+			appendNode(text, div);
+		},
+
+		p(changed, ctx) {
+			if ((changed.things) && text_value !== (text_value = ctx.thing.name)) {
+				text.data = text_value;
+			}
+		},
+
+		r() {
+			rect = div.getBoundingClientRect();
+		},
+
+		f() {
+			fixPosition(div);
+			if (animation) animation.stop();
+		},
+
+		a() {
+			if (animation) animation.stop();
+			animation = wrapAnimation(div, rect, foo, {});
+		},
+
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
+	};
+}
+
+function get_each_context(ctx, list, i) {
+	const child_ctx = Object.create(ctx);
+	child_ctx.thing = list[i];
+	child_ctx.each_value = list;
+	child_ctx.thing_index = i;
+	return child_ctx;
+}
+
+function SvelteComponent(options) {
+	init(this, options);
+	this._state = assign({}, options.data);
+	this._intro = true;
+
+	this._fragment = create_main_fragment(this, this._state);
+
+	if (options.target) {
+		this._fragment.c();
+		this._mount(options.target, options.anchor);
+	}
+}
+
+assign(SvelteComponent.prototype, proto);
+
+export default SvelteComponent;
diff --git a/test/js/samples/each-block-keyed-animated/expected.js b/test/js/samples/each-block-keyed-animated/expected.js
new file mode 100644
index 0000000000..99ff9b03fe
--- /dev/null
+++ b/test/js/samples/each-block-keyed-animated/expected.js
@@ -0,0 +1,131 @@
+/* generated by Svelte vX.Y.Z */
+import { appendNode, assign, blankObject, createComment, createElement, createText, detachNode, fixAndOutroAndDestroyBlock, fixPosition, init, insertNode, proto, updateKeyedEach, wrapAnimation } from "svelte/shared.js";
+
+function foo(node, animation, params) {
+	const dx = animation.from.left - animation.to.left;
+	const dy = animation.from.top - animation.to.top;
+
+	return {
+		delay: params.delay,
+		duration: 100,
+		tick: (t, u) => {
+			node.dx = u * dx;
+			node.dy = u * dy;
+		}
+	};
+};
+
+function create_main_fragment(component, ctx) {
+	var each_blocks_1 = [], each_lookup = blankObject(), each_anchor;
+
+	var each_value = ctx.things;
+
+	const get_key = ctx => ctx.thing.id;
+
+	for (var i = 0; i < each_value.length; i += 1) {
+		let child_ctx = get_each_context(ctx, each_value, i);
+		let key = get_key(child_ctx);
+		each_blocks_1[i] = each_lookup[key] = create_each_block(component, key, child_ctx);
+	}
+
+	return {
+		c() {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].c();
+
+			each_anchor = createComment();
+		},
+
+		m(target, anchor) {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].m(target, anchor);
+
+			insertNode(each_anchor, target, anchor);
+		},
+
+		p(changed, ctx) {
+			const each_value = ctx.things;
+			for (let i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].r();
+			each_blocks_1 = updateKeyedEach(each_blocks_1, component, changed, get_key, 1, ctx, each_value, each_lookup, each_anchor.parentNode, fixAndOutroAndDestroyBlock, create_each_block, "m", each_anchor, get_each_context);
+			for (let i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].a();
+		},
+
+		d(detach) {
+			for (i = 0; i < each_blocks_1.length; i += 1) each_blocks_1[i].d(detach);
+
+			if (detach) {
+				detachNode(each_anchor);
+			}
+		}
+	};
+}
+
+// (1:0) {#each things as thing (thing.id)}
+function create_each_block(component, key_1, ctx) {
+	var div, text_value = ctx.thing.name, text, rect, animation;
+
+	return {
+		key: key_1,
+
+		first: null,
+
+		c() {
+			div = createElement("div");
+			text = createText(text_value);
+			this.first = div;
+		},
+
+		m(target, anchor) {
+			insertNode(div, target, anchor);
+			appendNode(text, div);
+		},
+
+		p(changed, ctx) {
+			if ((changed.things) && text_value !== (text_value = ctx.thing.name)) {
+				text.data = text_value;
+			}
+		},
+
+		r() {
+			rect = div.getBoundingClientRect();
+		},
+
+		f() {
+			fixPosition(div);
+			if (animation) animation.stop();
+		},
+
+		a() {
+			if (animation) animation.stop();
+			animation = wrapAnimation(div, rect, foo, {});
+		},
+
+		d(detach) {
+			if (detach) {
+				detachNode(div);
+			}
+		}
+	};
+}
+
+function get_each_context(ctx, list, i) {
+	const child_ctx = Object.create(ctx);
+	child_ctx.thing = list[i];
+	child_ctx.each_value = list;
+	child_ctx.thing_index = i;
+	return child_ctx;
+}
+
+function SvelteComponent(options) {
+	init(this, options);
+	this._state = assign({}, options.data);
+	this._intro = true;
+
+	this._fragment = create_main_fragment(this, this._state);
+
+	if (options.target) {
+		this._fragment.c();
+		this._mount(options.target, options.anchor);
+	}
+}
+
+assign(SvelteComponent.prototype, proto);
+export default SvelteComponent;
\ No newline at end of file
diff --git a/test/js/samples/each-block-keyed-animated/input.html b/test/js/samples/each-block-keyed-animated/input.html
new file mode 100644
index 0000000000..8c2e2f872b
--- /dev/null
+++ b/test/js/samples/each-block-keyed-animated/input.html
@@ -0,0 +1,23 @@
+{#each things as thing (thing.id)}
+	<div animate:foo>{thing.name}</div>
+{/each}
+
+<script>
+	export default {
+		animations: {
+			foo(node, animation, params) {
+				const dx = animation.from.left - animation.to.left;
+				const dy = animation.from.top - animation.to.top;
+
+				return {
+					delay: params.delay,
+					duration: 100,
+					tick: (t, u) => {
+						node.dx = u * dx;
+						node.dy = u * dy;
+					}
+				};
+			}
+		}
+	};
+</script>
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