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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Test selecting snapshots for diffing.
const { diffingState, snapshotState, viewState } = require("devtools/client/memory/constants");
const {
toggleDiffing,
selectSnapshotForDiffing
} = require("devtools/client/memory/actions/diffing");
const { takeSnapshot } = require("devtools/client/memory/actions/snapshot");
const { changeView } = require("devtools/client/memory/actions/view");
function run_test() {
run_next_test();
}
// We test that you (1) cannot select a snapshot that is not in a diffable
// state, and (2) cannot select more than 2 snapshots for diffing. Both attempts
// trigger assertion failures.
EXPECTED_DTU_ASSERT_FAILURE_COUNT = 2;
add_task(function* () {
let front = new StubbedMemoryFront();
let heapWorker = new HeapAnalysesClient();
yield front.attach();
let store = Store();
const { getState, dispatch } = store;
dispatch(changeView(viewState.CENSUS));
equal(getState().diffing, null, "not diffing by default");
dispatch(takeSnapshot(front, heapWorker));
dispatch(takeSnapshot(front, heapWorker));
dispatch(takeSnapshot(front, heapWorker));
yield waitUntilSnapshotState(store, [snapshotState.SAVED,
snapshotState.SAVED,
snapshotState.SAVED]);
dispatch(takeSnapshot(front));
// Start diffing.
dispatch(toggleDiffing());
ok(getState().diffing, "now diffing after toggling");
equal(getState().diffing.firstSnapshotId, null,
"no first snapshot selected");
equal(getState().diffing.secondSnapshotId, null,
"no second snapshot selected");
equal(getState().diffing.state, diffingState.SELECTING,
"should be in diffing state SELECTING");
// Can't select a snapshot that is not in a diffable state.
equal(getState().snapshots[3].state, snapshotState.SAVING,
"the last snapshot is still in the process of being saved");
dumpn("Expecting exception:");
let threw = false;
try {
dispatch(selectSnapshotForDiffing(getState().snapshots[3]));
} catch (error) {
threw = true;
}
ok(threw, "Should not be able to select snapshots that aren't ready for diffing");
// Select first snapshot for diffing.
dispatch(selectSnapshotForDiffing(getState().snapshots[0]));
ok(getState().diffing, "now diffing after toggling");
equal(getState().diffing.firstSnapshotId, getState().snapshots[0].id,
"first snapshot selected");
equal(getState().diffing.secondSnapshotId, null,
"no second snapshot selected");
equal(getState().diffing.state, diffingState.SELECTING,
"should still be in diffing state SELECTING");
// Can't diff first snapshot with itself; this is a noop.
dispatch(selectSnapshotForDiffing(getState().snapshots[0]));
ok(getState().diffing, "still diffing");
equal(getState().diffing.firstSnapshotId, getState().snapshots[0].id,
"first snapshot still selected");
equal(getState().diffing.secondSnapshotId, null,
"still no second snapshot selected");
equal(getState().diffing.state, diffingState.SELECTING,
"should still be in diffing state SELECTING");
// Select second snapshot for diffing.
dispatch(selectSnapshotForDiffing(getState().snapshots[1]));
ok(getState().diffing, "still diffing");
equal(getState().diffing.firstSnapshotId, getState().snapshots[0].id,
"first snapshot still selected");
equal(getState().diffing.secondSnapshotId, getState().snapshots[1].id,
"second snapshot selected");
// Can't select more than two snapshots for diffing.
dumpn("Expecting exception:");
threw = false;
try {
dispatch(selectSnapshotForDiffing(getState().snapshots[2]));
} catch (error) {
threw = true;
}
ok(threw, "Can't select more than two snapshots for diffing");
heapWorker.destroy();
yield front.detach();
});
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