fmt: fix errors in test files

vlib/v/fmt/tests/simple_expected.vv

@@ -1,4 +1,4 @@
-fn hello() {
+fn main() {
 	mut a := 3 + 3
 	a = 10
 	a++
@@ -36,8 +36,9 @@ enum PrivateEnum {
 
 struct User {
 	name            string
-	age             int
 	very_long_field bool
+mut:
+	age             int
 }
 
 fn abc() int {
@@ -59,6 +60,7 @@ fn new_user() User {
 
 [inline]
 fn fn_contains_index_expr() {
+	arr := [1, 2, 3, 4, 5]
 	a := 1 in arr[0..]
 	b := 1 in arr[..2]
 	c := 1 in arr[1..3]
@@ -107,7 +109,7 @@ fn get_user_ptr() &User {
 
 fn fn_with_defer() {
 	defer {
-		close()
+		voidfn()
 	}
 }
 
@@ -158,6 +160,13 @@ fn fn_with_or() int {
 	return 20
 }
 
+fn fn_with_optional() ?int {
+	if true {
+		return error('true')
+	}
+	return 30
+}
+
 fn (f Foo) method_with_or() int {
 	f.fn_with_optional() or {
 		return 10
@@ -165,6 +174,13 @@ fn (f Foo) method_with_or() int {
 	return 20
 }
 
+fn (f Foo) fn_with_optional() ?int {
+	if true {
+		return error('true')
+	}
+	return 40
+}
+
 fn fn_with_match_expr() {
 	a := 10
 	b := match a {

vlib/v/fmt/tests/simple_input.vv

@@ -1,4 +1,4 @@
-fn hello()
+fn main()
 {
 	mut a:= 3 + 3
 	a = 10
@@ -35,9 +35,10 @@ enum PrivateEnum{
 
 struct User {
 	name string
-	age int
-
 	very_long_field bool
+
+mut:
+	age int
 }
 
 
@@ -62,6 +63,7 @@ User
 
 [inline]
 fn fn_contains_index_expr() {
+	arr := [1, 2, 3, 4, 5]
 	a := 1 in arr[0..]
 	b := 1 in arr[..2]
 	c := 1 in arr[1..3]
@@ -109,7 +111,7 @@ fn get_user_ptr() & User {
 }
 
 fn fn_with_defer() {
-defer {	close()
+defer {	voidfn()
 }
 }
 
@@ -160,6 +162,13 @@ fn fn_with_or() int {
 	return 20
 }
 
+fn fn_with_optional() ?int {
+	if true {
+		return error('true')
+	}
+	return 30
+}
+
 fn (f Foo) method_with_or() int {
 	f.fn_with_optional() or {
 		return 10
@@ -167,6 +176,13 @@ fn (f Foo) method_with_or() int {
 	return 20
 }
 
+fn (f Foo) fn_with_optional() ?int {
+	if true {
+		return error('true')
+	}
+	return 40
+}
+
 fn fn_with_match_expr() {
 	a := 10
 	b := match a {