Add test around illegal state exception when interfacing with a closed database

Author: developernotes

sqlcipher/src/androidTest/java/net/zetetic/database/sqlcipher_cts/SQLCipherDatabaseTest.java

@@ -445,4 +445,10 @@ public void shouldDeleteDataUsingRawExecSQL(){
     database.rawExecSQL("delete from t1;");
     assertThat(statement.simpleQueryForLong(), is(0L));
   }
+
+  @Test(expected = IllegalStateException.class)
+  public void shouldReportErrorAfterDatabaseCloseWhenCheckingTransactionState(){
+    database.close();
+    database.inTransaction();
+  }
 }