snuyanzin commented on code in PR #3522:
URL: https://github.com/apache/calcite/pull/3522#discussion_r1456343324


##########
testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
##########
@@ -13695,6 +13698,43 @@ private static void 
checkLogicalOrFunc(SqlOperatorFixture f) {
     }
   }
 
+  /**
+   * Test cases for
+   * <a 
href="https://issues.apache.org/jira/browse/CALCITE-6111";>[CALCITE-6111]
+   * Explicit cast from expression to numeric type doesn't check overflow</a>. 
*/
+  @Test public void testOverflow() {
+    final SqlOperatorFixture f = fixture();
+    f.checkFails(String.format(Locale.US, "SELECT cast(%d+30 as tinyint)", 
Byte.MAX_VALUE),
+        ".* out of range", true);
+    f.checkFails(String.format(Locale.US, "SELECT cast(%d+30 as smallint)", 
Short.MAX_VALUE),
+        ".* out of range", true);
+    // We use a long value because otherwise calcite interprets the literal as 
an integer.
+    f.checkFails(String.format(Locale.US, "SELECT cast(%d as int)", 
Long.MAX_VALUE),
+        ".* out of range", true);
+
+    // Casting a floating point value larger than the maximum allowed value.
+    // 1e60 is larger than the largest BIGINT value allowed.
+    f.checkFails("SELECT cast(1e60+30 as tinyint)",
+        ".* out of range", true);

Review Comment:
   nit:
   since there is already existing 
`org.apache.calcite.sql.test.SqlOperatorFixture#OUT_OF_RANGE_MESSAGE` would it 
make sense to reuse it here?



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