hi again Temur, i already tried that but it's not woking it doenst show the "custumer invoice view" that i want!it show another view i dont even know!!

thanks Jaakko for your help!

Update (Takwa)

hey again, well i actually found the problem i think i need to specify which view to open for which view mode and i tried to solve it mysef  thanks every one for your help 

so this is my code again :

    <menuitem name="Test" id="menu_test_root"/>

        <record model="ir.actions.act_window" id="action_test1_form">

            <field name="name">test.test.action</field>

            <field name="res_model">test.test</field>

            <field name="view_type">form</field>

            <field name="view_mode">tree,form</field>

        </record>  

        <menuitem name="Clients" id="menu_test_test" parent="menu_test_root"/>

        <menuitem name="factures clients" id="menu_formation_formation2" action="action_test1_form" parent="menu_test_test"/>

    <record id="view_account_invoice_inherit_tree" model="ir.ui.view">

        <field name="name">my.module.name.tree.inherit</field>

        <field name="model">test.test</field> 

        <field name="inherit_id" ref="account.invoice_tree" />

        <field name="arch" type="xml"> 

            <field name="state" position="after">

                <field name="de" /> </field> </field></record>

    <!-- les formulaire -->

    <record model="ir.ui.view" id="view_account_invoice_inherit_form">

        <field name="name">my.module.name.form.inherit</field>

        <field name="model">test.test</field>

        <field name="type">form</field>

        <field name="inherit_id" ref="account.invoice_form"/> 

        <field name="arch" type="xml">

             <field name="partner_id" position="after">

             <field name="de"/></field> </field></record>

      <record model="ir.actions.act_window.view" id="action_test_tree">

        <field name="sequence" eval="1"/>

        <field name="view_mode">tree</field>

        <field name="view_id" ref="view_account_invoice_inherit_tree"/>

        <field name="act_window_id" ref="action_test1_form"/>

    </record>     

    <record model="ir.actions.act_window.view" id="action_test_form">

        <field name="sequence" eval="1"/>

        <field name="view_mode">form</field>

        <field name="view_id" ref="view_account_invoice_inherit_form"/>

        <field name="act_window_id" ref="action_test1_form"/> </record>