Fix python-shell-buffer-substring when retrieving a single statement

* lisp/progmodes/python.el (python-shell-buffer-substring): Do not add
"if True:" line when retrieving a single statement.
(python-shell-send-region): Add a reference to
`python-shell-buffer-substring' in docstring.
* test/lisp/progmodes/python-tests.el (python-shell-buffer-substring-13)
(python-shell-buffer-substring-14, python-shell-buffer-substring-15)
(python-shell-buffer-substring-16, python-shell-buffer-substring-17):
New tests. (Bug#60142)

1 files changed, 64 insertions, 0 deletions

diff --git a/test/lisp/progmodes/python-tests.el b/test/lisp/progmodes/python-tests.el
index 17d6d8aa706..930234a12f2 100644
--- a/test/lisp/progmodes/python-tests.el
+++ b/test/lisp/progmodes/python-tests.el
@@ -4456,6 +4456,70 @@ def foo():
                      (point-max))
                     "# -*- coding: utf-8 -*-\n\nif True:\n        # Whitespace\n\n    print ('a')\n\n"))))
 
+(ert-deftest python-shell-buffer-substring-13 ()
+  "Check substring from indented single statement."
+  (python-tests-with-temp-buffer
+   "
+def foo():
+    a = 1
+"
+   (should (string= (python-shell-buffer-substring
+                     (python-tests-look-at "a = 1")
+                     (pos-eol))
+                    "# -*- coding: utf-8 -*-\n\na = 1"))))
+
+(ert-deftest python-shell-buffer-substring-14 ()
+  "Check substring from indented single statement spanning multiple lines."
+  (python-tests-with-temp-buffer
+   "
+def foo():
+    a = \"\"\"Some
+    string\"\"\"
+"
+   (should (string= (python-shell-buffer-substring
+                     (python-tests-look-at "a = \"\"\"Some")
+                     (pos-eol 2))
+                    "# -*- coding: utf-8 -*-\n\na = \"\"\"Some\n    string\"\"\""))))
+
+(ert-deftest python-shell-buffer-substring-15 ()
+  "Check substring from partial statement."
+  (python-tests-with-temp-buffer
+   "
+def foo():
+    a = 1
+"
+   (should (string= (python-shell-buffer-substring
+                     (python-tests-look-at "    a = 1")
+                     (python-tests-look-at " = 1"))
+                    "# -*- coding: utf-8 -*-\n\na"))))
+
+(ert-deftest python-shell-buffer-substring-16 ()
+  "Check substring from partial statement."
+  (python-tests-with-temp-buffer
+   "
+def foo():
+    a = 1
+"
+   (should (string= (python-shell-buffer-substring
+                     (python-tests-look-at "1")
+                     (1+ (point)))
+                    "# -*- coding: utf-8 -*-\n\n1"))))
+
+(ert-deftest python-shell-buffer-substring-17 ()
+  "Check substring from multiline string."
+  (python-tests-with-temp-buffer
+   "
+def foo():
+    s = \"\"\"
+    a = 1
+    b = 2
+\"\"\"
+"
+   (should (string= (python-shell-buffer-substring
+                     (python-tests-look-at "a = 1")
+                     (python-tests-look-at "\"\"\""))
+                    "# -*- coding: utf-8 -*-\n\nif True:\n    a = 1\n    b = 2\n\n"))))
+
 
 
 ;;; Shell completion