commit 6f94702f20ddc53d455d384f0c06ceb8db314a1f
author drh <drh@noemail.net> Wed Sep 23 13:39:56 2009 +0000
committer drh <drh@noemail.net> Wed Sep 23 13:39:56 2009 +0000
tree 716b7d151c703d9031739ec213a6f9f5914b528f
parent a8f0bf643e693df066bb26da38be8c898de5de45

Add test cases for the IS and IS NOT operator.

FossilOrigin-Name: 101ed58cf4a1dfe53031b98cfc7ed01e86b4c7b6

test/expr.test

diff --git a/test/expr.test b/test/expr.test
index 1d624d7..87ee8ed 100644
--- a/test/expr.test
+++ b/test/expr.test
@@ -165,6 +165,31 @@
   test_expr expr-1.110 {i1=0} {-9223372036854775807/-1} 9223372036854775807
 }
 
+test_expr expr-1.111 {i1=NULL, i2=8} {i1 IS i2} 0
+test_expr expr-1.112 {i1=NULL, i2=NULL} {i1 IS i2} 1
+test_expr expr-1.113 {i1=6, i2=NULL} {i1 IS i2} 0
+test_expr expr-1.114 {i1=6, i2=6} {i1 IS i2} 1
+test_expr expr-1.115 {i1=NULL, i2=8} \
+  {CASE WHEN i1 IS i2 THEN 'yes' ELSE 'no' END} no
+test_expr expr-1.116 {i1=NULL, i2=NULL} \
+  {CASE WHEN i1 IS i2 THEN 'yes' ELSE 'no' END} yes
+test_expr expr-1.117 {i1=6, i2=NULL} \
+  {CASE WHEN i1 IS i2 THEN 'yes' ELSE 'no' END} no
+test_expr expr-1.118 {i1=8, i2=8} \
+  {CASE WHEN i1 IS i2 THEN 'yes' ELSE 'no' END} yes
+test_expr expr-1.119 {i1=NULL, i2=8} {i1 IS NOT i2} 1
+test_expr expr-1.120 {i1=NULL, i2=NULL} {i1 IS NOT i2} 0
+test_expr expr-1.121 {i1=6, i2=NULL} {i1 IS NOT i2} 1
+test_expr expr-1.122 {i1=6, i2=6} {i1 IS NOT i2} 0
+test_expr expr-1.123 {i1=NULL, i2=8} \
+  {CASE WHEN i1 IS NOT i2 THEN 'yes' ELSE 'no' END} yes
+test_expr expr-1.124 {i1=NULL, i2=NULL} \
+  {CASE WHEN i1 IS NOT i2 THEN 'yes' ELSE 'no' END} no
+test_expr expr-1.125 {i1=6, i2=NULL} \
+  {CASE WHEN i1 IS NOT i2 THEN 'yes' ELSE 'no' END} yes
+test_expr expr-1.126 {i1=8, i2=8} \
+  {CASE WHEN i1 IS NOT i2 THEN 'yes' ELSE 'no' END} no
+
 ifcapable floatingpoint {
   test_expr expr-2.1 {r1=1.23, r2=2.34} {r1+r2} 3.57
   test_expr expr-2.2 {r1=1.23, r2=2.34} {r1-r2} -1.11