Bring back formatter's docstring tests

Author: Scony

gdtoolkit/formatter/class_statement.py

@@ -144,7 +144,9 @@ def _format_var_statement(statement: Tree, context: Context) -> Outcome:
 
 def _format_docstring_statement(statement: Tree, context: Context) -> Outcome:
     expression_context = ExpressionContext("", statement.line, "", statement.end_line)
-    return format_expression(statement.children[0], expression_context, context)
+    return format_concrete_expression(
+        statement.children[0], expression_context, context
+    )
 
 
 def _format_class_statement(statement: Tree, context: Context) -> Outcome:

tests/formatter/input-output-pairs/strings.in.gd

@@ -13,3 +13,19 @@ var x9 = '''x'''
 var x10 = '''x "'''
 
 var x11 = """abc " def ' ghi"""
+
+'x'
+
+'x "'
+'x " " \''
+"x '"
+"x ' ' \""
+
+'x \''
+"x \""
+'x \' "'
+
+'''x'''
+'''x "'''
+
+"""abc " def ' ghi"""

tests/formatter/input-output-pairs/strings.out.gd

@@ -13,3 +13,19 @@ var x9 = "x"
 var x10 = 'x "'
 
 var x11 = """abc " def ' ghi"""
+
+"x"
+
+'x "'
+'x " " \''
+"x '"
+"x ' ' \""
+
+"x '"
+'x "'
+"x ' \""
+
+"x"
+'x "'
+
+"""abc " def ' ghi"""