Fix bugs in comparison functions for multirange_bsearch_match()

Two functions multirange_range_overlaps_bsearch_comparison() and
multirange_range_contains_bsearch_comparison() contain bugs of returning -1
instead of 1.  This commit fixes these bugs and adds corresponding regression
tests.

Author: akorotkov

src/backend/utils/adt/multirangetypes.c

@@ -1660,7 +1660,7 @@ multirange_range_contains_bsearch_comparison(TypeCacheEntry *typcache,
 	if (range_cmp_bounds(typcache, keyUpper, lower) < 0)
 		return -1;
 	if (range_cmp_bounds(typcache, keyLower, upper) > 0)
-		return -1;
+		return 1;
 
 	/*
 	 * At this point we found overlapping range.  But we have to check if it
@@ -1825,7 +1825,7 @@ multirange_range_overlaps_bsearch_comparison(TypeCacheEntry *typcache,
 	if (range_cmp_bounds(typcache, keyUpper, lower) < 0)
 		return -1;
 	if (range_cmp_bounds(typcache, keyLower, upper) > 0)
-		return -1;
+		return 1;
 
 	*match = true;
 	return 0;

src/test/regress/expected/multirangetypes.out

@@ -834,6 +834,12 @@ SELECT nummultirange(numrange(1,2), numrange(3.5,8)) && nummultirange(numrange(3
  t
 (1 row)
 
+select '{(10,20),(30,40),(50,60)}'::nummultirange && '(42,92)'::numrange;
+ ?column? 
+----------
+ t
+(1 row)
+
 -- contains
 SELECT nummultirange() @> nummultirange();
  ?column? 
@@ -967,6 +973,12 @@ SELECT '{[1,5), [6,9)}'::nummultirange @> '{[6,7)}';
  t
 (1 row)
 
+select '{(10,20),(30,40),(50,60)}'::nummultirange @> '(52,56)'::numrange;
+ ?column? 
+----------
+ t
+(1 row)
+
 -- is contained by
 SELECT nummultirange() <@ nummultirange();
  ?column? 

src/test/regress/sql/multirangetypes.sql

@@ -162,6 +162,7 @@ SELECT nummultirange(numrange(1,2), numrange(7,8)) && nummultirange(numrange(3,4
 SELECT nummultirange(numrange(3,4)) && nummultirange(numrange(1,2), numrange(3.5,8));
 SELECT nummultirange(numrange(1,2), numrange(3.5,8)) && numrange(3,4);
 SELECT nummultirange(numrange(1,2), numrange(3.5,8)) && nummultirange(numrange(3,4));
+select '{(10,20),(30,40),(50,60)}'::nummultirange && '(42,92)'::numrange;
 
 -- contains
 SELECT nummultirange() @> nummultirange();
@@ -186,6 +187,7 @@ SELECT '{[-4,-2), [1,5)}'::nummultirange @> '{[1,5)}';
 SELECT '{[1,5), [8,9)}'::nummultirange @> '{[1,5)}';
 SELECT '{[1,5), [8,9)}'::nummultirange @> '{[6,7)}';
 SELECT '{[1,5), [6,9)}'::nummultirange @> '{[6,7)}';
+select '{(10,20),(30,40),(50,60)}'::nummultirange @> '(52,56)'::numrange;
 
 -- is contained by
 SELECT nummultirange() <@ nummultirange();