Add expectations.

test/libsolidity/syntaxTests/functionTypes/call_value_on_non_payable_function_type.sol

@@ -4,3 +4,5 @@ contract C {
         x.value(2)();
     }
 }
+// ----
+// TypeError: (94-101): Member "value" not found or not visible after argument-dependent lookup in function (uint256) external returns (uint256) - did you forget the "payable" modifier?

test/libsolidity/syntaxTests/functionTypes/delete_external_function_type_invalid.sol

@@ -3,3 +3,5 @@ contract C {
         delete this.f;
     }
 }
+// ----
+// TypeError: (54-60): Expression has to be an lvalue.

test/libsolidity/syntaxTests/functionTypes/delete_function_type.sol

@@ -12,3 +12,6 @@ contract C {
         delete g;
     }
 }
+// ----
+// Warning: (157-162): Use of the "var" keyword is deprecated.
+// Warning: (212-217): Use of the "var" keyword is deprecated.

test/libsolidity/syntaxTests/functionTypes/delete_function_type_invalid.sol

@@ -3,3 +3,5 @@ contract C {
         delete f;
     }
 }
+// ----
+// TypeError: (54-55): Expression has to be an lvalue.

test/libsolidity/syntaxTests/functionTypes/external_function_to_function_type_calldata_parameter.sol

@@ -1,7 +1,10 @@
+// This is a test that checks that the type of the `bytes` parameter is
+// correctly changed from its own type `bytes calldata` to `bytes memory`
+// when converting to a function type.
 contract C {
-    function f(function(bytes memory) external g) public { }
+    function f(function(bytes memory) pure external /*g*/) pure public { }
-    function callback(bytes) external {}
+    function callback(bytes) pure external {}
-    function g() public {
+    function g() view public {
         f(this.callback);
     }
 }

test/libsolidity/syntaxTests/functionTypes/external_function_type_returning_internal.sol

@@ -1,3 +1,5 @@
 contract C {
     function() external returns (function () internal) x;
 }
+// ----
+// TypeError: (46-67): Internal type cannot be used for external function type.

test/libsolidity/syntaxTests/functionTypes/external_function_type_taking_internal.sol

@@ -1,3 +1,5 @@
 contract C {
     function(function () internal) external x;
 }
+// ----
+// TypeError: (26-47): Internal type cannot be used for external function type.

test/libsolidity/syntaxTests/functionTypes/external_function_type_to_address.sol

@@ -1,5 +1,5 @@
 contract C {
-    function f() public returns (address) {
+    function f() public view returns (address) {
         return address(this.f);
     }
 }

test/libsolidity/syntaxTests/functionTypes/external_function_type_to_uint.sol

@@ -3,3 +3,5 @@ contract C {
         return uint(this.f);
     }
 }
+// ----
+// TypeError: (69-81): Explicit type conversion not allowed from "function () external returns (uint256)" to "uint256".

test/libsolidity/syntaxTests/functionTypes/function_type.sol

@@ -1,5 +1,6 @@
 contract C {
-    function f() public {
+    function f() pure public {
         function(uint) returns (uint) x;
+        x;
     }
 }

test/libsolidity/syntaxTests/functionTypes/function_type_arrays.sol

@@ -1,7 +1,7 @@
 contract C {
     function(uint) external returns (uint)[] public x;
     function(uint) internal returns (uint)[10] y;
-    function f() public {
+    function f() view public {
         function(uint) returns (uint)[10] memory a;
         function(uint) returns (uint)[10] storage b = y;
         function(uint) external returns (uint)[] memory c;

test/libsolidity/syntaxTests/functionTypes/function_type_parameter.sol

@@ -1,5 +1,7 @@
 contract C {
+    uint x;
     function f(function(uint) external returns (uint) g) public returns (function(uint) external returns (uint)) {
+        x = 2;
         return g;
     }
 }

test/libsolidity/syntaxTests/functionTypes/function_type_returned.sol

@@ -1,5 +1,5 @@
 contract C {
-    function f() public returns (function(uint) external returns (uint) g) {
+    function f() public pure returns (function(uint) pure external returns (uint) g) {
         return g;
     }
 }

test/libsolidity/syntaxTests/functionTypes/internal_function_as_external_parameter.sol

@@ -1,4 +1,8 @@
+// It should not be possible to give internal functions
+// as parameters to external functions.
 contract C {
     function f(function(uint) internal returns (uint) x) public {
     }
 }
+// ----
+// TypeError: (124-164): Internal or recursive type is not allowed for public or external functions.

test/libsolidity/syntaxTests/functionTypes/internal_function_as_external_parameter_in_library_external.sol

@@ -2,3 +2,5 @@ library L {
     function f(function(uint) internal returns (uint) x) public {
     }
 }
+// ----
+// TypeError: (27-67): Internal or recursive type is not allowed for public or external functions.

test/libsolidity/syntaxTests/functionTypes/internal_function_as_external_parameter_in_library_internal.sol

@@ -1,4 +1,4 @@
 library L {
-    function f(function(uint) internal returns (uint) x) internal {
+    function f(function(uint) internal returns (uint) /*x*/) pure internal {
     }
 }

test/libsolidity/syntaxTests/functionTypes/internal_function_returned_from_public_function.sol

@@ -1,4 +1,7 @@
+// It should not be possible to return internal functions from external functions.
 contract C {
     function f() public returns (function(uint) internal returns (uint) x) {
     }
 }
+// ----
+// TypeError: (129-169): Internal or recursive type is not allowed for public or external functions.

test/libsolidity/syntaxTests/functionTypes/internal_function_type_to_address.sol

@@ -3,3 +3,5 @@ contract C {
         return address(f);
     }
 }
+// ----
+// TypeError: (72-82): Explicit type conversion not allowed from "function () returns (address)" to "address".

test/libsolidity/syntaxTests/functionTypes/payable_internal_function_type.sol

@@ -1,3 +1,5 @@
 contract C {
     function (uint) internal payable returns (uint) x;
 }
+// ----
+// TypeError: (17-66): Only external function types can be payable.

test/libsolidity/syntaxTests/functionTypes/payable_internal_function_type_is_not_fatal.sol

@@ -1,7 +1,9 @@
 contract C {
     function (uint) internal payable returns (uint) x;
 
-    function g() {
+    function g() public {
         x = g;
     }
 }
+// ----
+// TypeError: (17-66): Only external function types can be payable.

test/libsolidity/syntaxTests/functionTypes/private_function_type.sol

@@ -3,3 +3,5 @@ contract C {
         function(uint) private returns (uint) x;
     }
 }
+// ----
+// TypeError: (47-86): Invalid visibility, can only be "external" or "internal".

test/libsolidity/syntaxTests/functionTypes/public_function_type.sol

@@ -3,3 +3,5 @@ contract C {
         function(uint) public returns (uint) x;
     }
 }
+// ----
+// TypeError: (47-85): Invalid visibility, can only be "external" or "internal".

test/libsolidity/syntaxTests/functionTypes/warn_function_type_parameters_with_names.sol

@@ -1,3 +1,5 @@
 contract C {
     function(uint a) f;
 }
+// ----
+// Warning: (26-32): Naming function type parameters is deprecated.

test/libsolidity/syntaxTests/functionTypes/warn_function_type_return_parameters_with_names.sol

@@ -1,3 +1,5 @@
 contract C {
     function(uint) returns (bool ret) f;
 }
+// ----
+// Warning: (41-49): Naming function type return parameters is deprecated.