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test: Enforce only argument-less functions as input to expectDataType #2704

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Merged
iwoplaza merged 1 commit into from
Jul 10, 2026
Merged

test: Enforce only argument-less functions as input to expectDataType #2704

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16 changes: 9 additions & 7 deletions packages/typegpu/tests/tgsl/conversion.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -51,15 +51,17 @@ describe('convertToCommonType', () => {
});

it('performs pointer dereferencing', () => {
const fn = tgpu.fn(
[d.ptrFn(d.f32)],
d.f32,
)((a) => {
const t = [a.$, d.f32(2)];
function fn(a: d.ref<number>) {
'use gpu';
const t = [a.$, d.f32(2)]; // <- should convert all elements to f32
return t[0] as number;
});
}

expectDataTypeOf(fn).toBe(d.f32);
expectDataTypeOf(() => {
'use gpu';
const numRef = d.ref(1);
return fn(numRef);
}).toBe(d.f32);
});

it('returns undefined for incompatible types', () => {
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6 changes: 2 additions & 4 deletions packages/typegpu/tests/utils/parseResolved.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -59,15 +59,13 @@ export function extractSnippetFromFn(cb: TgpuFn | (() => unknown)): Snippet {
}

export function expectSnippetOf(
cb: TgpuFn | (() => unknown),
cb: () => unknown,
): Assertion<[unknown, d.BaseData | UnknownData, Origin]> {
const snippet = extractSnippetFromFn(cb);
return expect([snippet.value, snippet.dataType, snippet.origin]);
}

export function expectDataTypeOf(
cb: TgpuFn | (() => unknown),
): Assertion<d.BaseData | UnknownData> {
export function expectDataTypeOf(cb: () => unknown): Assertion<d.BaseData | UnknownData> {
return expect<d.BaseData | UnknownData>(extractSnippetFromFn(cb).dataType);
}

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