add test for moran global

src/pg/test/expected/02_moran_test.out

@@ -5,6 +5,12 @@ SET client_min_messages TO WARNING;
 \set ECHO none
 _cdb_random_seeds
 
+(1 row)
+moran|significance
+0.3399|-0.0196
+(1 row)
+_cdb_random_seeds
+
 (1 row)
 code|quads
 01|HH

src/pg/test/sql/02_moran_test.sql

@@ -6,6 +6,14 @@
 -- Areas of Interest functions perform some nondeterministic computations
 -- (to estimate the significance); we will set the seeds for the RNGs
 -- that affect those results to have repeateble results
+
+-- Moran's I Global
+SELECT cdb_crankshaft._cdb_random_seeds(1234);
+
+SELECT round(moran, 4) As moran, round(significance, 4) As significance
+  FROM cdb_crankshaft.CDB_AreasOfInterestGlobal('SELECT * FROM ppoints', 'value') m(moran, significance);
+
+-- Moran's I Local
 SELECT cdb_crankshaft._cdb_random_seeds(1234);
 
 SELECT ppoints.code, m.quads