45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
|
import { expect, test } from "bun:test";
|
||
|
|
import { bunEnv, bunExe, tempDir } from "harness";
|
||
|
|
|
||
|
|
test("comma operator should strip 'this' binding in function calls", async () => {
|
||
|
|
await using dir = tempDir("comma-operator-test", {
|
||
|
|
"test.js": `
|
||
|
|
const doThing = () => {};
|
||
|
|
|
||
|
|
const cool = {
|
||
|
|
value: "beans",
|
||
|
|
logValue() {
|
||
|
|
console.log(this?.value || "undefined");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Direct call - should preserve 'this'
|
||
|
|
cool.logValue();
|
||
|
|
|
||
|
|
// Comma operator calls - should strip 'this'
|
||
|
|
(0, cool.logValue)();
|
||
|
|
(doThing(), cool.logValue)();
|
||
|
|
`,
|
||
|
|
});
|
||
|
|
|
||
|
|
await using proc = Bun.spawn({
|
||
|
|
cmd: [bunExe(), "test.js"],
|
||
|
|
env: bunEnv,
|
||
|
|
cwd: dir,
|
||
|
|
stderr: "pipe",
|
||
|
|
stdout: "pipe",
|
||
|
|
});
|
||
|
|
|
||
|
|
const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]);
|
||
|
|
|
||
|
|
expect(exitCode).toBe(0);
|
||
|
|
expect(stderr).toBe("");
|
||
|
|
|
||
|
|
// Should output: beans, undefined, undefined
|
||
|
|
const lines = stdout.trim().split("\n");
|
||
|
|
expect(lines).toHaveLength(3);
|
||
|
|
expect(lines[0]).toBe("beans");
|
||
|
|
expect(lines[1]).toBe("undefined");
|
||
|
|
expect(lines[2]).toBe("undefined");
|
||
|
|
});
|