#752 - Refactor: SQL generation for @History support with Postgres, MySql (views/triggers based) such that it more closely aligns with SQL 2011 based SQL

src/test/java/com/avaje/ebean/config/dbplatform/MySqlHistorySupportTest.java

@@ -0,0 +1,32 @@
+package com.avaje.ebean.config.dbplatform;
+
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class MySqlHistorySupportTest {
+
+  private MySqlHistorySupport support = new MySqlHistorySupport();
+  
+  @Test
+  public void getAsOfPredicate() {
+
+    String asOfPredicate = support.getAsOfPredicate("t0", "sys_period");
+    assertEquals(asOfPredicate, "(t0.sys_period_start <= ? and (t0.sys_period_end is null or t0.sys_period_end > ?))");
+  }
+
+  @Test
+  public void getLower() throws Exception {
+
+    String lower = support.getSysPeriodLower("t0", "sys_period");
+    assertEquals(lower, "t0.sys_period_start");
+  }
+
+  @Test
+  public void getUpper() throws Exception {
+
+    String upper = support.getSysPeriodUpper("t0", "sys_period");
+    assertEquals(upper, "t0.sys_period_end");
+  }
+}

src/test/java/com/avaje/ebean/config/dbplatform/PostgresHistorySupportTest.java

@@ -0,0 +1,38 @@
+package com.avaje.ebean.config.dbplatform;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class PostgresHistorySupportTest {
+
+  private PostgresHistorySupport support = new PostgresHistorySupport();
+
+  @Test
+  public void getBindCount() throws Exception {
+
+    assertEquals(support.getBindCount(), 1);
+  }
+
+  @Test
+  public void getAsOfPredicate() throws Exception {
+
+    String asOfPredicate = support.getAsOfPredicate("t0", "sys_period");
+    assertEquals(asOfPredicate, "t0.sys_period @> ?::timestamptz");
+  }
+
+  @Test
+  public void getSysPeriodLower() throws Exception {
+
+    String lower = support.getSysPeriodLower("t0", "sys_period");
+    assertEquals(lower, "lower(t0.sys_period)");
+  }
+
+  @Test
+  public void getSysPeriodUpper() throws Exception {
+
+    String upper = support.getSysPeriodUpper("t0", "sys_period");
+    assertEquals(upper, "upper(t0.sys_period)");
+  }
+
+}