const kFn = 'pack4x8snorm';
export const description = `Validate ${kFn}`;

import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
import { keysOf } from '../../../../../../common/util/data_tables.js';
import { ShaderValidationTest } from '../../../shader_validation_test.js';

const kArgCases = {
  good: '(vec4f())',
  good_vec4_abstract_float: '(vec4(0.1))',
  bad_0args: '()',
  bad_2args: '(vec4f(),vec4f())',
  bad_abstract_int: '(1)',
  bad_i32: '(1i)',
  bad_f32: '(1f)',
  bad_u32: '(1u)',
  bad_abstract_float: '(0.1)',
  bad_bool: '(false)',
  bad_vec4u: '(vec4u())',
  bad_vec4i: '(vec4i())',
  bad_vec4b: '(vec4<bool>())',
  bad_vec2f: '(vec2f())',
  bad_vec3f: '(vec3f())',
  bad_array: '(array(1.0, 2.0, 3.0, 4.0))',
  bad_struct: '(modf(1.1))',
};
const kGoodArgs = kArgCases['good'];
const kReturnType = 'u32';

export const g = makeTestGroup(ShaderValidationTest);

g.test('args')
  .desc(`Test compilation failure of ${kFn} with various numbers of and types of arguments`)
  .params(u => u.combine('arg', keysOf(kArgCases)))
  .fn(t => {
    t.expectCompileResult(
      t.params.arg === 'good' || t.params.arg === 'good_vec4_abstract_float',
      `const c = ${kFn}${kArgCases[t.params.arg]};`
    );
  });

g.test('return')
  .desc(`Test ${kFn} return value type`)
  .params(u => u.combine('type', ['u32', 'i32', 'f32', 'bool', 'vec2u']))
  .fn(t => {
    t.expectCompileResult(
      t.params.type === kReturnType,
      `const c: ${t.params.type} = ${kFn}${kGoodArgs};`
    );
  });

g.test('must_use')
  .desc(`Result of ${kFn} must be used`)
  .params(u => u.combine('use', [true, false]))
  .fn(t => {
    const use_it = t.params.use ? '_ = ' : '';
    t.expectCompileResult(t.params.use, `fn f() { ${use_it}${kFn}${kGoodArgs}; }`);
  });
