add testcase

src/test/java/com/alibaba/druid/bvt/sql/EqualTest2.java

@@ -0,0 +1,34 @@
+package com.alibaba.druid.bvt.sql;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleIntervalExpr;
+import com.alibaba.druid.sql.dialect.oracle.parser.OracleExprParser;
+
+public class EqualTest2 extends TestCase {
+
+    public void test_exits() throws Exception {
+        String sql = "INTERVAL '30.12345' SECOND(2, 4)";
+        String sql_c = "INTERVAL '30.12345' SECOND(2, 3)";
+        OracleIntervalExpr exprA, exprB, exprC;
+        {
+            OracleExprParser parser = new OracleExprParser(sql);
+            exprA = (OracleIntervalExpr) parser.expr();
+        }
+        {
+            OracleExprParser parser = new OracleExprParser(sql);
+            exprB = (OracleIntervalExpr) parser.expr();
+        }
+        {
+            OracleExprParser parser = new OracleExprParser(sql_c);
+            exprC = (OracleIntervalExpr) parser.expr();
+        }
+        Assert.assertEquals(exprA, exprB);
+        Assert.assertNotEquals(exprA, exprC);
+        Assert.assertTrue(exprA.equals(exprA));
+        Assert.assertFalse(exprA.equals(new Object()));
+        Assert.assertEquals(exprA.hashCode(), exprB.hashCode());
+    }
+}