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Test Info:
/* Any copyright is dedicated to the Public Domain.
// Test diffing.
"use strict";
const {
diffingState,
treeMapState,
const TEST_URL =
this.test = makeMemoryTest(TEST_URL, async function ({ panel }) {
const store = panel.panelWin.gStore;
const { getState } = store;
const doc = panel.panelWin.document;
ok(!getState().diffing, "Not diffing by default.");
// Take two snapshots.
const takeSnapshotButton = doc.getElementById("take-snapshot");
EventUtils.synthesizeMouseAtCenter(takeSnapshotButton, {}, panel.panelWin);
await waitForTime(1000);
EventUtils.synthesizeMouseAtCenter(takeSnapshotButton, {}, panel.panelWin);
// Enable diffing mode.
const diffButton = doc.getElementById("diff-snapshots");
EventUtils.synthesizeMouseAtCenter(diffButton, {}, panel.panelWin);
await waitUntilState(
store,
state => !!state.diffing && state.diffing.state === diffingState.SELECTING
);
ok(true, "Clicking the diffing button put us into the diffing state.");
is(getDisplayedSnapshotStatus(doc), "Select the baseline snapshot");
await waitUntilState(
store,
state =>
state.snapshots.length === 2 &&
state.snapshots[0].treeMap &&
state.snapshots[1].treeMap &&
state.snapshots[0].treeMap.state === treeMapState.SAVED &&
state.snapshots[1].treeMap.state === treeMapState.SAVED
);
const listItems = [...doc.querySelectorAll(".snapshot-list-item")];
is(listItems.length, 2, "Should have two snapshot list items");
// Select the first snapshot.
EventUtils.synthesizeMouseAtCenter(listItems[0], {}, panel.panelWin);
await waitUntilState(
store,
state =>
state.diffing.state === diffingState.SELECTING &&
state.diffing.firstSnapshotId
);
is(
getDisplayedSnapshotStatus(doc),
"Select the snapshot to compare to the baseline"
);
// Select the second snapshot.
EventUtils.synthesizeMouseAtCenter(listItems[1], {}, panel.panelWin);
await waitUntilState(
store,
state => state.diffing.state === diffingState.TAKING_DIFF
);
ok(true, "Selecting two snapshots for diffing triggers computing the diff");
// .startsWith because the ellipsis is lost in translation.
ok(getDisplayedSnapshotStatus(doc).startsWith("Computing difference"));
await waitUntilState(
store,
state => state.diffing.state === diffingState.TOOK_DIFF
);
ok(true, "And that diff is computed successfully");
is(getDisplayedSnapshotStatus(doc), null, "No status text anymore");
ok(
doc.querySelector(".heap-tree-item"),
"And instead we should be showing the tree"
);
});