diff --git a/tests/test_grammar.py b/tests/test_grammar.py
index cabf4e54c..ffe22595f 100644
--- a/tests/test_grammar.py
+++ b/tests/test_grammar.py
@@ -260,10 +260,12 @@
     ("str_quoted_inter", "'${null}'", "None"),
     ("str_quoted_esc_single_1", r"'ab\'cd\'\'${str}'", "ab'cd''hi"),
     ("str_quoted_esc_single_2", r"""'\\\${foo}'""", r"\${foo}"),
-    ("str_quoted_esc_single_3", r"""'\\a_${str}\\'""", r" \\a_hi\ ".strip()),
+    ("str_quoted_esc_single_3", r"""'\\a_${str}'""", r"\\a_hi"),
+    ("str_quoted_esc_single_4", r"""'a_${str}\\'""", r" a_hi\ ".strip()),
     ("str_quoted_esc_double_1", r'"ab\"cd\"\"${str}"', 'ab"cd""hi'),
     ("str_quoted_esc_double_2", r'''"\\\${foo}"''', r"\${foo}"),
-    ("str_quoted_esc_double_3", r'''"\\a_${str}\\"''', r" \\a_hi\ ".strip()),
+    ("str_quoted_esc_double_3", r'''"\\a_${str}"''', r"\\a_hi"),
+    ("str_quoted_esc_double_4", r'''"a_${str}\\"''', r" a_hi\ ".strip()),
     ("str_quoted_other_quote_double", """'double"'""", 'double"'),
     ("str_quoted_other_quote_single", '''"single'"''', "single'"),
     ("str_quoted_concat_bad_1", '"Hi "${str}', GrammarParseError),