// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:analyzer/src/diagnostic/diagnostic.dart' as diag;
import 'package:test_reflective_loader/test_reflective_loader.dart';

import '../dart/resolution/context_collection_resolution.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(ListElementTypeNotAssignableTest);
    defineReflectiveTests(ListElementTypeNotAssignableWithStrictCastsTest);
  });
}

@reflectiveTest
class ListElementTypeNotAssignableTest extends PubPackageResolutionTest {
  test_const_ifElement_thenElseFalse_intInt() async {
    await assertNoErrorsInCode('''
const dynamic a = 0;
const dynamic b = 0;
var v = const <int>[if (1 < 0) a else b];
''');
  }

  test_const_ifElement_thenElseFalse_intString() async {
    await assertErrorsInCode(
      '''
const dynamic a = 0;
const dynamic b = 'b';
var v = const <int>[if (1 < 0) a else b];
''',
      [error(diag.listElementTypeNotAssignable, 82, 1)],
    );
  }

  test_const_ifElement_thenFalse_intString() async {
    await assertErrorsInCode(
      '''
var v = const <int>[if (1 < 0) 'a'];
''',
      [error(diag.listElementTypeNotAssignable, 31, 3)],
    );
  }

  test_const_ifElement_thenFalse_intString_dynamic() async {
    await assertNoErrorsInCode('''
const dynamic a = 'a';
var v = const <int>[if (1 < 0) a];
''');
  }

  test_const_ifElement_thenTrue_intInt() async {
    await assertNoErrorsInCode('''
const dynamic a = 0;
var v = const <int>[if (true) a];
''');
  }

  test_const_ifElement_thenTrue_intString() async {
    await assertErrorsInCode(
      '''
const dynamic a = 'a';
var v = const <int>[if (true) a];
''',
      [error(diag.listElementTypeNotAssignable, 53, 1)],
    );
  }

  test_const_intInt() async {
    await assertNoErrorsInCode(r'''
var v1 = <int> [42];
var v2 = const <int> [42];
''');
  }

  test_const_intNull_dynamic() async {
    await assertErrorsInCode(
      '''
const a = null;
var v = const <int>[a];
''',
      [error(diag.listElementTypeNotAssignableNullability, 36, 1)],
    );
  }

  test_const_intNull_value() async {
    await assertErrorsInCode(
      '''
var v = const <int>[null];
''',
      [error(diag.listElementTypeNotAssignableNullability, 20, 4)],
    );
  }

  test_const_spread_intInt() async {
    await assertNoErrorsInCode('''
var v = const <int>[...[0, 1]];
''');
  }

  test_const_stringInt() async {
    await assertErrorsInCode(
      '''
var v = const <String>[42];
''',
      [error(diag.listElementTypeNotAssignable, 23, 2)],
    );
  }

  test_const_stringInt_dynamic() async {
    await assertErrorsInCode(
      '''
const dynamic x = 42;
var v = const <String>[x];
''',
      [error(diag.listElementTypeNotAssignable, 45, 1)],
    );
  }

  test_const_stringQuestion_null_value() async {
    await assertNoErrorsInCode('''
var v = const <String?>[null];
''');
  }

  test_const_voidInt() async {
    await assertNoErrorsInCode('''
var v = const <void>[42];
''');
  }

  test_nonConst_genericFunction_genericContext() async {
    await assertNoErrorsInCode('''
List<U Function<U>(U)> foo(T Function<T>(T a) f) {
  return [f];
}
''');
  }

  test_nonConst_genericFunction_genericContext_nonAssignable() async {
    await assertErrorsInCode(
      '''
List<U Function<U>(U, int)> foo(T Function<T>(T a) f) {
  return [f];
}
''',
      [error(diag.listElementTypeNotAssignable, 66, 1)],
    );
  }

  test_nonConst_genericFunction_nonGenericContext() async {
    await assertNoErrorsInCode('''
List<int Function(int)> foo(T Function<T>(T a) f) {
  return [f];
}
''');
  }

  test_nonConst_genericFunction_nonGenericContext_nonAssignable() async {
    await assertErrorsInCode(
      '''
List<int Function(int, int)> foo(T Function<T>(T a) f) {
  return [f];
}
''',
      [error(diag.listElementTypeNotAssignable, 67, 1)],
    );
  }

  test_nonConst_ifElement_thenElseFalse_intDynamic() async {
    await assertNoErrorsInCode('''
const dynamic a = 'a';
const dynamic b = 'b';
var v = <int>[if (1 < 0) a else b];
''');
  }

  test_nonConst_ifElement_thenElseFalse_intInt() async {
    await assertNoErrorsInCode('''
const dynamic a = 0;
const dynamic b = 0;
var v = <int>[if (1 < 0) a else b];
''');
  }

  test_nonConst_ifElement_thenFalse_intString() async {
    await assertErrorsInCode(
      '''
var v = <int>[if (1 < 0) 'a'];
''',
      [error(diag.listElementTypeNotAssignable, 25, 3)],
    );
  }

  test_nonConst_ifElement_thenTrue_intDynamic() async {
    await assertNoErrorsInCode('''
const dynamic a = 'a';
var v = <int>[if (true) a];
''');
  }

  test_nonConst_ifElement_thenTrue_intInt() async {
    await assertNoErrorsInCode('''
const dynamic a = 0;
var v = <int>[if (true) a];
''');
  }

  test_nonConst_spread_intInt() async {
    await assertNoErrorsInCode('''
var v = <int>[...[0, 1]];
''');
  }

  test_nonConst_stringInt() async {
    await assertErrorsInCode(
      '''
var v = <String>[42];
''',
      [error(diag.listElementTypeNotAssignable, 17, 2)],
    );
  }

  test_nonConst_stringInt_dynamic() async {
    await assertNoErrorsInCode('''
const dynamic x = 42;
var v = <String>[x];
''');
  }

  test_nonConst_voidInt() async {
    await assertNoErrorsInCode('''
var v = <void>[42];
''');
  }
}

@reflectiveTest
class ListElementTypeNotAssignableWithStrictCastsTest
    extends PubPackageResolutionTest
    with WithStrictCastsMixin {
  test_ifElement_falseBranch() async {
    await assertErrorsWithStrictCasts(
      '''
void f(bool c, dynamic a) {
  <int>[if (c) 0 else a];
}
''',
      [error(diag.listElementTypeNotAssignable, 50, 1)],
    );
  }

  test_ifElement_trueBranch() async {
    await assertErrorsWithStrictCasts(
      '''
void f(bool c, dynamic a) {
  <int>[if (c) a];
}
''',
      [error(diag.listElementTypeNotAssignable, 43, 1)],
    );
  }

  test_spread() async {
    await assertErrorsWithStrictCasts(
      '''
void f(Iterable<dynamic> a) {
  <int>[...a];
}
''',
      [error(diag.listElementTypeNotAssignable, 41, 1)],
    );
  }
}
