diff --git a/test/expected/halfvec_input.out b/test/expected/halfvec_input.out
index 74442c9..a61d72b 100644
--- a/test/expected/halfvec_input.out
+++ b/test/expected/halfvec_input.out
@@ -109,6 +109,11 @@ ERROR:  halfvec must have at least 1 dimension
 LINE 1: SELECT '[]'::halfvec;
                ^
 -- TODO fix error message
+SELECT '[ ]'::halfvec;
+ERROR:  invalid input syntax for type halfvec: "[ ]"
+LINE 1: SELECT '[ ]'::halfvec;
+               ^
+-- TODO fix error message
 SELECT '[,]'::vector;
 ERROR:  vector must have at least 1 dimension
 LINE 1: SELECT '[,]'::vector;
diff --git a/test/expected/vector_input.out b/test/expected/vector_input.out
index 6de1a0c..bb6e0d4 100644
--- a/test/expected/vector_input.out
+++ b/test/expected/vector_input.out
@@ -121,6 +121,11 @@ ERROR:  vector must have at least 1 dimension
 LINE 1: SELECT '[]'::vector;
                ^
 -- TODO fix error message
+SELECT '[ ]'::vector;
+ERROR:  invalid input syntax for type vector: "[ ]"
+LINE 1: SELECT '[ ]'::vector;
+               ^
+-- TODO fix error message
 SELECT '[,]'::vector;
 ERROR:  vector must have at least 1 dimension
 LINE 1: SELECT '[,]'::vector;
diff --git a/test/sql/halfvec_input.sql b/test/sql/halfvec_input.sql
index 563e5ff..45a3831 100644
--- a/test/sql/halfvec_input.sql
+++ b/test/sql/halfvec_input.sql
@@ -21,6 +21,8 @@ SELECT '[ '::halfvec;
 SELECT '[,'::halfvec;
 SELECT '[]'::halfvec;
 -- TODO fix error message
+SELECT '[ ]'::halfvec;
+-- TODO fix error message
 SELECT '[,]'::vector;
 SELECT '[1,]'::halfvec;
 SELECT '[1a]'::halfvec;
diff --git a/test/sql/vector_input.sql b/test/sql/vector_input.sql
index ceb1c90..9ea98f9 100644
--- a/test/sql/vector_input.sql
+++ b/test/sql/vector_input.sql
@@ -23,6 +23,8 @@ SELECT '[ '::vector;
 SELECT '[,'::vector;
 SELECT '[]'::vector;
 -- TODO fix error message
+SELECT '[ ]'::vector;
+-- TODO fix error message
 SELECT '[,]'::vector;
 SELECT '[1,]'::vector;
 SELECT '[1a]'::vector;