#2119. Code format and description update in operator tests (#2238)

Code format and description update in operator tests. Note that many of these tests have intentional syntax errors.

Language/Classes/Constructors/Constant_Constructors/not_a_constant_in_superclass_t01.dart

@@ -8,6 +8,7 @@
 /// A superclass of C cannot declare such an initializer either, because it must
 /// necessarily declare constant constructor as well (unless it is Object, which
 /// declares no instance variables)
+///
 /// @description Checks that compile error is produced if class declares a
 /// constant constructor and its superclass has instance variable initialized
 /// by non-constant expression

Language/Classes/Constructors/Constant_Constructors/not_a_constant_in_superclass_t02.dart

@@ -6,11 +6,11 @@
 /// by a class C if any instance variable declared in C is initialized with an
 /// expression that is not a constant expression.
 /// A superclass of C cannot declare such an initializer either, because it must
-/// necessarily declare constant constructor as well (unless it is Object, which declares
-/// no instance variables)
+/// necessarily declare constant constructor as well (unless it is Object, which
+/// declares no instance variables)
 ///
 /// @description Checks that compile error is produced if class declares a
-/// constant constructor and its superclass has overriden instance variable
+/// constant constructor and its superclass has overridden instance variable
 /// initialized by non-constant expression.
 /// @author sgrekhov@unipro.ru
 

Language/Classes/Constructors/Constant_Constructors/not_a_constant_in_superclass_t03.dart

@@ -6,8 +6,9 @@
 /// by a class C if any instance variable declared in C is initialized with an
 /// expression that is not a constant expression.
 /// A superclass of C cannot declare such an initializer either, because it must
-/// necessarily declare constant constructor as well (unless it is Object, which declares
-/// no instance variables)
+/// necessarily declare constant constructor as well (unless it is Object, which
+/// declares no instance variables)
+///
 /// @description Checks that compile error is produced if class declares a
 /// constant constructor and its superclass has instance variable initialized
 /// by non-constant expression. Test type alias

Language/Classes/Instance_Methods/Operators/allowed_names_t01.dart

@@ -4,11 +4,11 @@
 
 /// @assertion The following names are allowed for user-defined operators:
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that the listed operators may indeed be defined in a 
 /// user class.
 /// @author vasya
 
-
 import "../../../../Utils/expect.dart";
 
 class C {

Language/Classes/Instance_Methods/Operators/allowed_names_t02.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators:
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator != cannot be defined in a user class.
 /// @author vasya
 
-
 class C {
   operator !=(other) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t03.dart

@@ -4,11 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator !== cannot be defined in a user class.
 /// @author iefremov
 
-
-
 class C {
   operator !==(other) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t04.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator === cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator ===(other) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t05.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator ! cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   bool operator !() {}
 //              ^

Language/Classes/Instance_Methods/Operators/allowed_names_t06.dart

@@ -4,9 +4,9 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator = cannot be defined in a user class.
 
-
 class C {
   operator =(x) {}
 //               ^

Language/Classes/Instance_Methods/Operators/allowed_names_t07.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator += cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator +=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t08.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator -= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator -=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t09.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator *= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator *=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t10.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator /= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator /=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t11.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator ~/= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator ~/=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t12.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator %= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator %=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t13.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator <<= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator <<=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t14.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator >>= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator >>=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t15.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator &= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator &=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t16.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator |= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator |=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t17.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator ^= cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator ^=(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t18.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator ++ cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator ++() {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t19.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator -- cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator --() {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t20.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator is cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator is(x) {}
 //           ^

Language/Classes/Instance_Methods/Operators/allowed_names_t21.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator && cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator &&(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t22.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator || cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator ||(x) {}
 //         ^

Language/Classes/Instance_Methods/Operators/allowed_names_t23.dart

@@ -4,10 +4,10 @@
 
 /// @assertion The following names are allowed for user-defined operators: 
 /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜.
+///
 /// @description Checks that operator <<< cannot be defined in a user class.
 /// @author iefremov
 
-
 class C {
   operator <<<(x) {}
 //           ^

Language/Classes/Instance_Methods/Operators/arity_0_or_1_t01.dart

@@ -7,7 +7,8 @@
 /// The - operator is unique in that two overloaded versions are permitted.
 /// If the operator has no arguments, it denotes unary minus.
 /// If it as an argument, it denotes binary subtraction.
-/// @description Checks that operator - can be defined both with 0 and 1 
+///
+/// @description Checks that operator `-` can be defined both with 0 and 1
 /// arguments.
 /// @author kaigorodov
 

Language/Classes/Instance_Methods/Operators/arity_0_or_1_t02.dart

@@ -7,11 +7,11 @@
 /// The - operator is unique in that two overloaded versions are permitted.
 /// If the operator has no arguments, it denotes unary minus.
 /// If it as an argument, it denotes binary subtraction.
+///
 /// @description Checks that a compile-time error is produced if a user-defined
-/// operator - specifies two parameters.
+/// operator `-` specifies two parameters.
 /// @author kaigorodov
 
-
 class C {
   operator -(var val, var val2) {}
 //         ^

Language/Classes/Instance_Methods/Operators/arity_0_t01.dart

@@ -4,6 +4,7 @@
 
 /// @assertion It is a compile-time error if the arity of the user-declared
 /// operator ~ is not 0.
+///
 /// @description Checks that no compile-time error is produced if a user-defined
 /// operator ~ specifies zero parameters.
 /// @author kaigorodov

Language/Classes/Instance_Methods/Operators/arity_0_t02.dart

@@ -4,11 +4,11 @@
 
 /// @assertion It is a compile-time error if the arity of the user-declared
 /// operator ~ is not 0.
+///
 /// @description Checks that a compile-time error is produced if a user-defined
 /// operator ~ specifies one parameter.
 /// @author vasya
 
-
 class C {
   operator ~(var v) {}
 //         ^

Language/Classes/Instance_Methods/Operators/arity_1_t01.dart

@@ -5,11 +5,11 @@
 /// @assertion It is a compile-time error if the arity of a user-declared 
 /// operator with one of the names:
 /// <, >, <=, >=, ==, -, +,  ̃/, /, *, %, |, ˆ, &, <<, >>, >>>, [] is not 1.
+///
 /// @description Checks that a compile-time error is produced if a user-defined
 /// operator == specifies two parameters.
 /// @author vasya
 
-
 class C {
   operator ==(var val, var val2) => true;
 //         ^

Language/Classes/Instance_Methods/Operators/arity_1_t02.dart

@@ -5,11 +5,11 @@
 /// @assertion It is a compile-time error if the arity of a user-declared 
 /// operator with one of the names:
 /// <, >, <=, >=, ==, -, +,  ̃/, /, *, %, |, ˆ, &, <<, >>, >>>, [] is not 1.
+///
 /// @description Checks that a compile-time error is produced if a user-defined 
 /// operator < specifies two parameters.
 /// @author vasya
 
-
 class C {
   operator <(var val, var val2) {}
 //         ^

Language/Classes/Instance_Methods/Operators/arity_1_t03.dart

@@ -5,11 +5,11 @@
 /// @assertion It is a compile-time error if the arity of a user-declared 
 /// operator with one of the names:
 /// <, >, <=, >=, ==, -, +,  ̃/, /, *, %, |, ˆ, &, <<, >>, >>>, [] is not 1.
+///
 /// @description Checks that a compile-time error is produced if a user-defined
 /// operator > specifies two parameters.
 /// @author vasya
 
-
 class C {
   operator >(var val, var val2) {}
 //         ^