gh-132661: Implement PEP 750 (#132662)

Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Wingy <git@wingysam.xyz>
Co-authored-by: Koudai Aono <koxudaxi@gmail.com>
Co-authored-by: Dave Peck <davepeck@gmail.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Co-authored-by: Paul Everitt <pauleveritt@me.com>
Co-authored-by: sobolevn <mail@sobolevn.me>

1 files changed, 19 insertions, 0 deletions

diff --git a/Lib/test/test_ast/test_ast.py b/Lib/test/test_ast/test_ast.py
index dd459487afe..eeac7c21eda 100644
--- a/Lib/test/test_ast/test_ast.py
+++ b/Lib/test/test_ast/test_ast.py
@@ -880,6 +880,25 @@ class AST_Tests(unittest.TestCase):
         for src in srcs:
             ast.parse(src)
 
+    def test_tstring(self):
+        # Test AST structure for simple t-string
+        tree = ast.parse('t"Hello"')
+        self.assertIsInstance(tree.body[0].value, ast.TemplateStr)
+        self.assertIsInstance(tree.body[0].value.values[0], ast.Constant)
+
+        # Test AST for t-string with interpolation
+        tree = ast.parse('t"Hello {name}"')
+        self.assertIsInstance(tree.body[0].value, ast.TemplateStr)
+        self.assertIsInstance(tree.body[0].value.values[0], ast.Constant)
+        self.assertIsInstance(tree.body[0].value.values[1], ast.Interpolation)
+
+        # Test AST for implicit concat of t-string with f-string
+        tree = ast.parse('t"Hello {name}" f"{name}"')
+        self.assertIsInstance(tree.body[0].value, ast.TemplateStr)
+        self.assertIsInstance(tree.body[0].value.values[0], ast.Constant)
+        self.assertIsInstance(tree.body[0].value.values[1], ast.Interpolation)
+        self.assertIsInstance(tree.body[0].value.values[2], ast.FormattedValue)
+
 
 class CopyTests(unittest.TestCase):
     """Test copying and pickling AST nodes."""