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export const description = `
Execution tests for the 'atan2' builtin function

S is abstract-float, f32, f16
T is S or vecN<S>
@const fn atan2(e1: T ,e2: T ) -> T
Returns the arc tangent of e1 over e2. Component-wise when T is a vector.
`;

import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { AllFeaturesMaxLimitsGPUTest } from '../../../../../gpu_test.js';
import { Type } from '../../../../../util/conversion.js';
import { allInputSources, onlyConstInputSource, run } from '../../expression.js';

import { d } from './atan2.cache.js';
import { abstractFloatBuiltin, builtin } from './builtin.js';

export const g = makeTestGroup(AllFeaturesMaxLimitsGPUTest);

g.test('abstract_float')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(`abstract float tests`)
  .params(u =>
    u
      .combine('inputSource', onlyConstInputSource)
      .combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    const cases = await d.get(`abstract_const`);
    await run(
      t,
      abstractFloatBuiltin('atan2'),
      [Type.abstractFloat, Type.abstractFloat],
      Type.abstractFloat,
      t.params,
      cases
    );
  });

g.test('f32')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(
    `
f32 tests

TODO(#792): Decide what the ground-truth is for these tests. [1]
`
  )
  .params(u =>
    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    const cases = await d.get(`f32_${t.params.inputSource === 'const' ? 'const' : 'non_const'}`);
    await run(t, builtin('atan2'), [Type.f32, Type.f32], Type.f32, t.params, cases);
  });

g.test('f16')
  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
  .desc(`f16 tests`)
  .params(u =>
    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
  )
  .fn(async t => {
    t.skipIfDeviceDoesNotHaveFeature('shader-f16');
    const cases = await d.get(`f16_${t.params.inputSource === 'const' ? 'const' : 'non_const'}`);
    await run(t, builtin('atan2'), [Type.f16, Type.f16], Type.f16, t.params, cases);
  });