1 files changed, 96 insertions, 0 deletions
diff --git a/src/s3select/example/run_test.bash b/src/s3select/example/run_test.bash
new file mode 100755
index 000000000..56654d7ab
--- /dev/null
+++ b/src/s3select/example/run_test.bash
@@ -0,0 +1,96 @@
+#!/bin/bash
+
+set -e
+
+PREFIX=${1:-"./example"} 
+
+## purpose : sanity tests
+
+s3select_calc() 
+{
+l="$*"  
+res=$( echo 1 | "$PREFIX"/s3select_example -q  "select ${l} from stdin;" ) 
+echo "$res" | sed 's/.$//'
+}
+
+# create c file with expression , compile it and run it.
+c_calc()
+{
+cat << @@ > "$PREFIX"/tmp.c
+
+#include <stdio.h>
+int main()
+{
+printf("%f\n",$*);
+}
+@@
+gcc -o "$PREFIX"/a.out "$PREFIX"/tmp.c
+"$PREFIX"/a.out
+}
+
+expr_test()
+{
+## test the arithmetic evaluation of s3select against C program 
+for i in {1..100}
+do
+	e=$(python2 "$PREFIX"/expr_genrator.py 5)
+	echo expression["$i"]="$e"
+	r1=$(s3select_calc "$e")
+	r2=$(c_calc "$e")
+    echo "$r1" "$r2"
+
+	## should be zero or very close to zero; ( s3select is C compile program )
+    res=$(echo "" | awk -v e="$e" -v r1="$r1" -v r2="$r2" 'function abs(n){if (n<0) return -n; else return n;}{if (abs(r1-r2) > 0.00001) {print "MISSMATCH result for expression",e;}}')
+    if test "$res" != ""; then
+        echo "$res"
+        exit 1
+    fi
+done
+}
+
+aggregate_test()
+{
+## generate_rand_csv is generating with the same seed 
+echo check sum 
+s3select_val=$("$PREFIX"/generate_rand_csv 10 10 | "$PREFIX"/s3select_example -q 'select sum(int(_1)) from stdin;') 
+awk_val=$("$PREFIX"/generate_rand_csv 10 10 | awk 'BEGIN{FS=",";} {s+=$1;} END{print s;}')
+s3select_val=${s3select_val::-1}
+echo "$s3select_val" "$awk_val"
+if test "$s3select_val" -ne "$awk_val"; then
+    exit 1
+fi
+echo check min 
+s3select_val=$("$PREFIX"/generate_rand_csv 10 10 | "$PREFIX"/s3select_example -q 'select min(int(_1)) from stdin;') 
+awk_val=$("$PREFIX"/generate_rand_csv 10 10 | awk 'BEGIN{FS=",";min=100000;} {if(min>$1) min=$1;} END{print min;}')
+s3select_val=${s3select_val::-1}
+echo "$s3select_val" "$awk_val"
+if test "$s3select_val" -ne "$awk_val"; then
+    exit 1
+fi
+echo check max 
+s3select_val=$("$PREFIX"/generate_rand_csv 10 10 | "$PREFIX"/s3select_example -q 'select max(int(_1)) from stdin;') 
+awk_val=$("$PREFIX"/generate_rand_csv 10 10 | awk 'BEGIN{FS=",";max=0;} {if(max<$1) max=$1;} END{print max;}' )
+s3select_val=${s3select_val::-1}
+echo "$s3select_val" "$awk_val"
+if test "$s3select_val" -ne "$awk_val"; then
+    exit 1
+fi
+echo check substr and count 
+s3select_val=$("$PREFIX"/generate_rand_csv 10000 10 | "$PREFIX"/s3select_example -q 'select count(int(_1)) from stdin where int(_1)>200 and int(_1)<250;')
+awk_val=$("$PREFIX"/generate_rand_csv 10000 10 | "$PREFIX"/s3select_example -q 'select substr(_1,1,1) from stdin where int(_1)>200 and int(_1)<250;' | uniq -c | awk '{print $1;}')
+s3select_val=${s3select_val::-1}
+echo "$s3select_val" "$awk_val"
+if test "$s3select_val" -ne "$awk_val"; then
+    exit 1
+fi
+}
+
+###############################################################
+
+expr_test
+aggregate_test
+
+rm "$PREFIX"/tmp.c "$PREFIX"/a.out
+
+exit 0
+