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/* eslint max-nested-callbacks: ["error", 6] */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import {
createStore,
selectors,
actions,
makeSource,
makeFrame,
waitForState,
waitATick,
} from "../../utils/test-head";
function waitForPreview(store, expression) {
return waitForState(store, state => {
const preview = selectors.getPreview(state);
return preview && preview.expression == expression;
});
}
function mockThreadFront(overrides) {
return {
evaluateInFrame: async () => ({ result: {} }),
getFrameScopes: async () => {},
getFrames: async () => [],
sourceContents: async () => ({
source: "",
contentType: "text/javascript",
}),
getSourceActorBreakpointPositions: async () => ({}),
getSourceActorBreakableLines: async () => [],
evaluateExpressions: async () => [],
loadObjectProperties: async () => ({}),
...overrides,
};
}
function dispatchSetPreview(dispatch, context, expression, target) {
return dispatch(
actions.setPreview(
context,
expression,
{
start: { url: "foo.js", line: 1, column: 2 },
end: { url: "foo.js", line: 1, column: 5 },
},
{ line: 2, column: 3 },
target.getBoundingClientRect(),
target
)
);
}
async function pause(store, client) {
const { dispatch, cx } = store;
const base = await dispatch(
actions.newGeneratedSource(makeSource("base.js"))
);
await dispatch(actions.selectSource(cx, base.id));
await waitForState(store, state => selectors.hasSymbols(state, base));
const { thread } = cx;
const frames = [makeFrame({ id: "frame1", sourceId: base.id, thread })];
client.getFrames = async () => frames;
await dispatch(
actions.paused({
thread,
frame: frames[0],
loadedObjects: [],
why: { type: "debuggerStatement" },
})
);
}
describe("preview", () => {
it("should generate previews", async () => {
const store = createStore(mockThreadFront());
const { dispatch, getState, cx } = store;
const base = await dispatch(
actions.newGeneratedSource(makeSource("base.js"))
);
await dispatch(actions.selectSource(cx, base.id));
await waitForState(store, state => selectors.hasSymbols(state, base));
const frames = [makeFrame({ id: "f1", sourceId: base.id })];
await dispatch(
actions.paused({
thread: store.cx.thread,
frame: frames[0],
frames,
loadedObjects: [],
why: { type: "debuggerStatement" },
})
);
const newCx = selectors.getContext(getState());
const firstTarget = document.createElement("div");
dispatchSetPreview(dispatch, newCx, "foo", firstTarget);
expect(selectors.getPreview(getState())).toMatchSnapshot();
});
// When a 2nd setPreview is called before a 1st setPreview dispatches
// and the 2nd setPreview has not dispatched yet,
// the first setPreview should not finish dispatching
it("queued previews (w/ the 1st finishing first)", async () => {
let resolveFirst, resolveSecond;
const promises = [
new Promise(resolve => {
resolveFirst = resolve;
}),
new Promise(resolve => {
resolveSecond = resolve;
}),
];
const client = mockThreadFront({
loadObjectProperties: () => promises.shift(),
});
const store = createStore(client);
const { dispatch, getState } = store;
await pause(store, client);
const newCx = selectors.getContext(getState());
const firstTarget = document.createElement("div");
const secondTarget = document.createElement("div");
// Start the dispatch of the first setPreview. At this point, it will not
// finish execution until we resolve the firstSetPreview
dispatchSetPreview(dispatch, newCx, "firstSetPreview", firstTarget);
// Start the dispatch of the second setPreview. At this point, it will not
// finish execution until we resolve the secondSetPreview
dispatchSetPreview(dispatch, newCx, "secondSetPreview", secondTarget);
let fail = false;
/* $FlowIgnore[not-a-function] this is guarantied to be initialized because
`new new Promise(foo)` calls foo synchronously */
resolveFirst();
waitForPreview(store, "firstSetPreview").then(() => {
fail = true;
});
// $FlowIgnore[not-a-function] same as above
resolveSecond();
await waitForPreview(store, "secondSetPreview");
expect(fail).toEqual(false);
const preview = selectors.getPreview(getState());
expect(preview && preview.expression).toEqual("secondSetPreview");
});
// When a 2nd setPreview is called before a 1st setPreview dispatches
// and the 2nd setPreview has dispatched,
// the first setPreview should not finish dispatching
it("queued previews (w/ the 2nd finishing first)", async () => {
let resolveFirst, resolveSecond;
const promises = [
new Promise(resolve => {
resolveFirst = resolve;
}),
new Promise(resolve => {
resolveSecond = resolve;
}),
];
const client = mockThreadFront({
loadObjectProperties: () => promises.shift(),
});
const store = createStore(client);
const { dispatch, getState } = store;
await pause(store, client);
const cx = selectors.getThreadContext(getState());
const firstTarget = document.createElement("div");
const secondTarget = document.createElement("div");
// Start the dispatch of the first setPreview. At this point, it will not
// finish execution until we resolve the firstSetPreview
dispatchSetPreview(dispatch, cx, "firstSetPreview", firstTarget);
// Start the dispatch of the second setPreview. At this point, it will not
// finish execution until we resolve the secondSetPreview
dispatchSetPreview(dispatch, cx, "secondSetPreview", secondTarget);
let fail = false;
/* $FlowIgnore[not-a-function] this is guarantied to be initialized because
`new new Promise(foo)` calls foo synchronously */
resolveSecond();
await waitForPreview(store, "secondSetPreview");
// $FlowIgnore[not-a-function] same as above
resolveFirst();
waitForPreview(store, "firstSetPreview").then(() => {
fail = true;
});
await waitATick(() => expect(fail).toEqual(false));
const preview = selectors.getPreview(getState());
expect(preview && preview.expression).toEqual("secondSetPreview");
});
});
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