[semantic-syntax-errors] test for LoadBeforeGlobalDeclaration - ruff linter (#17592)

Hey @ntBre 

just one easy case to see if I understood the issue #17526 

Let me know if is this what you had in mind.

Author: VascoSch92

crates/ruff_linter/resources/test/fixtures/syntax_errors/load_before_global_declaration.py

@@ -0,0 +1,23 @@
+x = 10
+def test_1():
+    global x  # ok
+    x += 1
+
+
+x = 10
+def test_2():
+    x += 1      # error
+    global x
+
+def test_3():
+    print(x)  # error
+    global x
+    x = 5
+
+def test_4():
+    global x
+    print(x)
+    x = 1
+
+x = 0
+test_4()

crates/ruff_linter/src/linter.rs

@@ -1064,6 +1064,10 @@ mod tests {
 
     #[test_case(Rule::YieldOutsideFunction, Path::new("yield_scope.py"))]
     #[test_case(Rule::ReturnOutsideFunction, Path::new("return_outside_function.py"))]
+    #[test_case(
+        Rule::LoadBeforeGlobalDeclaration,
+        Path::new("load_before_global_declaration.py")
+    )]
     fn test_syntax_errors(rule: Rule, path: &Path) -> Result<()> {
         let snapshot = path.to_string_lossy().to_string();
         let path = Path::new("resources/test/fixtures/syntax_errors").join(path);

crates/ruff_linter/src/snapshots/ruff_linter__linter__tests__load_before_global_declaration.py.snap

@@ -0,0 +1,20 @@
+---
+source: crates/ruff_linter/src/linter.rs
+---
+resources/test/fixtures/syntax_errors/load_before_global_declaration.py:9:5: PLE0118 Name `x` is used prior to global declaration on line 10
+   |
+ 7 | x = 10
+ 8 | def test_2():
+ 9 |     x += 1      # error
+   |     ^ PLE0118
+10 |     global x
+   |
+
+resources/test/fixtures/syntax_errors/load_before_global_declaration.py:13:11: PLE0118 Name `x` is used prior to global declaration on line 14
+   |
+12 | def test_3():
+13 |     print(x)  # error
+   |           ^ PLE0118
+14 |     global x
+15 |     x = 5
+   |