MDEV-6109: EXPLAIN JSON

- Add first testcases
- Don't overquote when printing conditions
- Other small output fixes

1 files changed, 27 insertions, 0 deletions

diff --git a/mysql-test/t/explain_json.test b/mysql-test/t/explain_json.test
new file mode 100644
index 00000000000..e9306101f81
--- /dev/null
+++ b/mysql-test/t/explain_json.test
@@ -0,0 +1,27 @@
+#
+# EXPLAIN FORMAT=JSON tests. These are tests developed for MariaDB.
+#
+--disable_warnings
+drop table if exists t0,t1;
+--enable_warnings
+
+create table t0(a int);
+insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+explain format=json select * from t0;
+
+explain format=json select * from t0 where 1>2;
+
+explain format=json select * from t0 where a<3;
+
+#create table t1 (a int, b int, filler char(32), key(a));
+#insert into t1 
+#select 
+#  A.a + B.a* 10 + C.a * 100, 
+#  A.a + B.a* 10 + C.a * 100,
+#  'filler'
+#from t0 A, t0 B, t0 C;
+#
+#explain format=json select * from t0,t1 where t1.a=t0.a;
+
+drop table t0;