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9f21d0a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | import type { CesiumWidget } from "@cesium/engine";
import { describe, expect, it } from "vitest";
import { reportableError, skipUnsizedFrames } from "./CesiumController";
/**
* A fake widget that counts renders and ticks. The `render` of Cesium ticks the
* clock itself, so the guard must keep the tick count equal after a skip.
*/
function fakeWidget(width: number, height: number) {
const state = { renders: 0, ticks: 0, width, height };
const widget = {
scene: {
get drawingBufferWidth() {
return state.width;
},
get drawingBufferHeight() {
return state.height;
},
},
clock: {
tick() {
state.ticks += 1;
},
},
render() {
state.renders += 1;
state.ticks += 1;
},
};
return { widget: widget as unknown as CesiumWidget, state };
}
describe("skipUnsizedFrames", () => {
it("draws when the drawing buffer has a size", () => {
const { widget, state } = fakeWidget(1110, 500);
skipUnsizedFrames(widget);
widget.render();
expect(state.renders).toBe(1);
});
it.each([
["zero width", 0, 500],
["zero height", 1110, 0],
["zero both", 0, 0],
])("skips the frame on %s", (_case, width, height) => {
const { widget, state } = fakeWidget(width, height);
skipUnsizedFrames(widget);
widget.render();
expect(state.renders).toBe(0);
});
it("ticks the clock while it skips, so the clock stays current", () => {
const { widget, state } = fakeWidget(0, 0);
skipUnsizedFrames(widget);
widget.render();
widget.render();
expect(state.ticks).toBe(2);
});
it("draws again after the canvas has a size, and does not stay off", () => {
const { widget, state } = fakeWidget(0, 0);
skipUnsizedFrames(widget);
widget.render();
state.width = 1110;
state.height = 500;
widget.render();
expect(state.renders).toBe(1);
expect(state.ticks).toBe(2);
});
});
describe("reportableError", () => {
it("keeps an Error without a change", () => {
const error = new RangeError("Expected width to be greater than 0");
expect(reportableError(error, "An error occurred while rendering.")).toBe(error);
});
it("describes a non-Error with the title and message from Cesium", () => {
// What an imagery provider gives the panel: no message, no stack.
const requestErrorEvent = { statusCode: 404, response: undefined, responseHeaders: {} };
const reported = reportableError(requestErrorEvent, 'An error occurred in "ImageryLayer"', "Failed to obtain image tile X: 1 Y: 2 Level: 3.");
expect(reported).toBeInstanceOf(Error);
expect(reported.message).toBe('Cesium: An error occurred in "ImageryLayer" — Failed to obtain image tile X: 1 Y: 2 Level: 3.');
expect(reported.cause).toBe(requestErrorEvent);
});
it("uses only the title when Cesium gives no message", () => {
expect(reportableError({}, "An error occurred while rendering.").message).toBe("Cesium: An error occurred while rendering.");
});
it("gives a message when Cesium gives neither", () => {
expect(reportableError({}, "").message).toBe("Cesium: render error");
});
});
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