Insert into view

Any thoughts on the following

------------------------------ testview.sql
-------------------------------------
drop table testhead; /* If it exists */
drop table testline; /* If it exists */
drop view testview; /* If it exists */

create table testhead (
part text
);

create table testline (
part text,
colour text,
adate datetime default 'now'
);

create view testview as
select testhead.part, testline.colour, testline.adate from testhead, testline
where testhead.part = testline.part;

insert into testview values ('pen', 'green');
insert into testview values ('pen', 'blue');
insert into testview values ('pen', 'black');

select * from testview;

-----------------------------------------------------------------------------------

The inserts report no errors, and when looking into $PGDATA/base/mydb/testview
with a hex editor I can see the values inserted.

The select on view returns nothing...

Should the insert not fail seeing that views are read only ?

--
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Regards
Theo