add test for issue_1

index_advisor--0.1.0--0.1.1.sql

@@ -96,7 +96,6 @@ begin
                 and (select array_agg(x) from unnest(pi.indkey) v(x)) = array[pa.attnum]
                 and pi.indexprs is null -- ignore expression indexes
                 and pi.indpred is null -- ignore partial indexes
-                and pa.atttypid in (20,16,1082,1184,1114,701,23,21,700,1083,2950,1700,25,18,1042,1043)
         where
             pc.relnamespace::regnamespace::text not in ( -- ignore schema list
                 'pg_catalog', 'pg_toast', 'information_schema'
@@ -107,6 +106,7 @@ begin
             and pa.attnum > 0
             and not pa.attisdropped
             and pi.indrelid is null
+            and pa.atttypid in (20,16,1082,1184,1114,701,23,21,700,1083,2950,1700,25,18,1042,1043)
         )
         loop
             -- Create the hypothetical index

index_advisor--0.1.1.sql

@@ -94,7 +94,6 @@ begin
                 and (select array_agg(x) from unnest(pi.indkey) v(x)) = array[pa.attnum]
                 and pi.indexprs is null -- ignore expression indexes
                 and pi.indpred is null -- ignore partial indexes
-                and pa.atttypid in (20,16,1082,1184,1114,701,23,21,700,1083,2950,1700,25,18,1042,1043)
         where
             pc.relnamespace::regnamespace::text not in ( -- ignore schema list
                 'pg_catalog', 'pg_toast', 'information_schema'
@@ -105,6 +104,7 @@ begin
             and pa.attnum > 0
             and not pa.attisdropped
             and pi.indrelid is null
+            and pa.atttypid in (20,16,1082,1184,1114,701,23,21,700,1083,2950,1700,25,18,1042,1043)
         )
         loop
             -- Create the hypothetical index

test/expected/issue_1.out

@@ -0,0 +1,18 @@
+begin;
+    create extension index_advisor version '0.1.1' cascade;
+NOTICE:  installing required extension "hypopg"
+    create table public.book(
+        id int,
+        -- json type is not btree indexable. In version 0.1.1 this raises the error
+        -- ERROR:  data type json has no default operator class for access method "btree"
+        meta json
+    );
+    select index_advisor($$
+        select * from book where id = $1
+    $$);
+                                index_advisor                                 
+------------------------------------------------------------------------------
+ (0.00,4.07,25.88,13.54,"{""CREATE INDEX ON public.book USING btree (id)""}")
+(1 row)
+
+rollback;

test/sql/issue_1.sql

@@ -0,0 +1,16 @@
+begin;
+
+    create extension index_advisor version '0.1.1' cascade;
+
+    create table public.book(
+        id int,
+        -- json type is not btree indexable. In version 0.1.1 this raises the error
+        -- ERROR:  data type json has no default operator class for access method "btree"
+        meta json
+    );
+
+    select index_advisor($$
+        select * from book where id = $1
+    $$);
+
+rollback;