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explore more error behavior

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Timo K
2025-11-17 19:43:35 +01:00
parent 256c53236b
commit f530759515
1 changed files with 20 additions and 7 deletions
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27
src/useBehavior.test.tsx
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@@ -7,7 +7,7 @@ Please see LICENSE in the repository root for full details.
import { render } from "@testing-library/react"; import { render } from "@testing-library/react";
import { afterEach, beforeEach, describe, expect, it } from "vitest"; import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { catchError, of, tap, Subject, map } from "rxjs"; import { catchError, of, tap, Subject, map, BehaviorSubject } from "rxjs";
import { type Behavior } from "./state/Behavior"; import { type Behavior } from "./state/Behavior";
import { useBehavior } from "./useBehavior"; import { useBehavior } from "./useBehavior";
@@ -64,7 +64,6 @@ describe("useBehavior", () => {
it("useBehavior forwards the throw in obs computation", () => { it("useBehavior forwards the throw in obs computation", () => {
const throwingOperation = (): string => { const throwingOperation = (): string => {
throw new Error("Test error"); throw new Error("Test error");
return "a";
}; };
expect(() => { expect(() => {
@@ -75,12 +74,13 @@ describe("useBehavior", () => {
render(<TestComponent behavior$={b$}>Test</TestComponent>); render(<TestComponent behavior$={b$}>Test</TestComponent>);
}).toThrow("Test error"); }).toThrow("Test error");
}); });
it("useBehavior does not throw in caught obs computation", () => {
function errorOnE(s: string): string {
if (s === "E") throw new Error("Test error");
return s + "CheckedForE";
}
function errorOnE(s: string): string {
if (s === "E") throw new Error("Test error");
return s + "CheckedForE";
}
it("useBehavior does not throw in caught obs computation", () => {
console.log("hello"); console.log("hello");
const s$ = new Subject<string>(); const s$ = new Subject<string>();
const b$ = scope.behavior(s$.pipe(map(errorOnE)), "START"); const b$ = scope.behavior(s$.pipe(map(errorOnE)), "START");
@@ -108,4 +108,17 @@ describe("useBehavior", () => {
render(<TestComponent behavior$={b$}>Test</TestComponent>); render(<TestComponent behavior$={b$}>Test</TestComponent>);
}).toThrow(); }).toThrow();
}); });
it("a playground to test around a little bit", () => {
const s$ = new BehaviorSubject("initial");
const e = new Error("Test error");
console.log("hello");
s$.error(e);
// does not help to set the value afterwards if it errord once it cannot recover
s$.next("nextval");
const s2$ = scope.behavior(s$.pipe(catchError((e) => e.message)));
expect(() => s$.value).toThrow(e);
expect(() => s2$.value).not.toThrow();
});
}); });