Minior: Add negative tests about log function

Author: caicancai

datafusion/sqllogictest/test_files/scalar.slt

@@ -561,8 +561,15 @@ select log(2, 64) a, log(100) b union all select log(2, 8), log(10);
 query RR rowsort
 select log(null, 64) a, log(null) b;
 ----
+-0.584962500721 -0.176091259056
+
+# log scalar nulls
+query RR rowsort
+select log(2, 2.0/3) a, log(10, 2.0/3) b;
+----
 NULL NULL
 
+
 # log scalar nulls #1
 query RR rowsort
 select log(2, null) a, log(null) b;
@@ -614,6 +621,12 @@ select log10(null);
 ----
 NULL
 
+# log10 scalar Fraction
+query R rowsort
+select log10(2.0/3);
+----
+-0.176091259056
+
 # log10 scalar ops with zero edgecases
 # please see https://github.com/apache/arrow-datafusion/pull/5245#issuecomment-1426828382
 query R rowsort
@@ -644,6 +657,12 @@ select log2(null);
 ----
 NULL
 
+# log2 scalar Fraction
+query R rowsort
+select log2(2.0/3);
+----
+-0.584962500721
+
 # log2 scalar ops with zero edgecases
 # please see https://github.com/apache/arrow-datafusion/pull/5245#issuecomment-1426828382
 query R rowsort