TRUNC is an another name of TRUNCATE so merge test files

h2/src/test/org/h2/test/scripts/TestScript.java

@@ -117,7 +117,7 @@ public class TestScript extends TestBase {
                 "expand", "floor", "hash", "length", "log", "mod", "pi",
                 "power", "radians", "rand", "random-uuid", "round",
                 "roundmagic", "secure-rand", "sign", "sin", "sinh", "sqrt",
-                "tan", "tanh", "trunc", "truncate", "zero" }) {
+                "tan", "tanh", "truncate", "zero" }) {
             testScript("functions/numeric/" + s + ".sql");
         }
         for (String s : new String[] { "ascii", "bit-length", "char", "concat",

h2/src/test/org/h2/test/scripts/functions/numeric/trunc.sql

--- Copyright 2004-2018 H2 Group. Multiple-Licensed under the MPL 2.0,
--- and the EPL 1.0 (http://h2database.com/html/license.html).
--- Initial Developer: H2 Group
---
-
-create memory table test(id int primary key, name varchar(255));
-> ok
-
-insert into test values(1, 'Hello');
-> update count: 1
-
-select truncate(null, null) en, truncate(1.99, 0) e1, truncate(-10.9, 0) em10 from test;
-> EN   E1  EM10
-> ---- --- -----
-> null 1.0 -10.0
-> rows: 1
-
-select trunc(null, null) en, trunc(1.99, 0) e1, trunc(-10.9, 0) em10 from test;
-> EN   E1  EM10
-> ---- --- -----
-> null 1.0 -10.0
-> rows: 1
-
-
-
-

h2/src/test/org/h2/test/scripts/functions/numeric/truncate.sql

@@ -2,3 +2,21 @@
 -- and the EPL 1.0 (http://h2database.com/html/license.html).
 -- Initial Developer: H2 Group
 --
+
+create memory table test(id int primary key, name varchar(255));
+> ok
+
+insert into test values(1, 'Hello');
+> update count: 1
+
+select truncate(null, null) en, truncate(1.99, 0) e1, truncate(-10.9, 0) em10 from test;
+> EN   E1  EM10
+> ---- --- -----
+> null 1.0 -10.0
+> rows: 1
+
+select trunc(null, null) en, trunc(1.99, 0) e1, trunc(-10.9, 0) em10 from test;
+> EN   E1  EM10
+> ---- --- -----
+> null 1.0 -10.0
+> rows: 1