TEST _nl_tax_1a(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 20.0f, "NL/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL/21"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/1a");
    ASSERT_EQ(tl->total_net, 50.0f);
    ASSERT_EQ(tl->total_tax, 50.0f * 0.21f);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    ASSERT_EQ(tl2->total_tax, 50.0f * 0.21f);

    PASS();
}

TEST _nl_tax_1b(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 10.0f, "NL/9"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 15.0f, "NL/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/1b");
    ASSERT_EQ(tl->total_net, 25.0f);
    ASSERT_EQ(tl->total_tax, 25.0f * 0.09f);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    ASSERT_EQ(tl2->total_tax, 25.0f * 0.09f);

    PASS();
}

TEST _nl_tax_1e(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL/0"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 50.0f, "NL/0"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/1e");
    ASSERT_EQ(tl->total_net, 80.0f);
    ASSERT_EQ(tl->total_tax, 0.0f);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    ASSERT_EQ(tl2->total_tax, 0.0f);

    PASS();
}

TEST _nl_tax_2currency(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    administration::invoice_set_currency(&inv, "USD");
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 20.0f, "NL/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL/21"));
    
    float eur_usd_exchange_rate = 1.2f;
    
    inv.net = 50.0f / eur_usd_exchange_rate;
    inv.tax = inv.net * 0.21f;
    inv.allowance = 0.0f;
    inv.total = inv.net + inv.tax;

    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/1a");
    GREATEST_ASSERT_FEQ(tl->total_net, inv.net);
    GREATEST_ASSERT_FEQ(tl->total_tax, inv.tax);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    GREATEST_ASSERT_FEQ(tl2->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_2a(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_incomming();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL_IN/BV/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 50.0f, "NL_IN/BV/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/2a");
    GREATEST_ASSERT_FEQ(tl->total_net, inv.net);
    GREATEST_ASSERT_FEQ(tl->total_tax, inv.tax);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    GREATEST_ASSERT_FEQ(tl2->total_tax, inv.tax);

    tax_line* tl3 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5b");
    GREATEST_ASSERT_FEQ(tl3->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_4a(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_incomming();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL_IN/BEUV/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 50.0f, "NL_IN/BEUV/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/4a");
    GREATEST_ASSERT_FEQ(tl->total_net, inv.net);
    GREATEST_ASSERT_FEQ(tl->total_tax, inv.tax);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    GREATEST_ASSERT_FEQ(tl2->total_tax, inv.tax);

    tax_line* tl3 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5b");
    GREATEST_ASSERT_FEQ(tl3->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_4b(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_incomming();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL_IN/IEUV/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 50.0f, "NL_IN/IEUV/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl = administration::get_tax_line_from_report(&statement.reports[0], "NL/4b");
    GREATEST_ASSERT_FEQ(tl->total_net, inv.net);
    GREATEST_ASSERT_FEQ(tl->total_tax, inv.tax);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    GREATEST_ASSERT_FEQ(tl2->total_tax, inv.tax);

    tax_line* tl3 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5b");
    GREATEST_ASSERT_FEQ(tl3->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_5a(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 20.0f, "NL/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl2 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5a");
    ASSERT_EQ(tl2->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_5b(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_incomming();
    
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL_IN/21/5B"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 50.0f, "NL_IN/9/5B"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    tax_line* tl3 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5b");
    GREATEST_ASSERT_FEQ(tl3->total_tax, inv.tax);

    PASS();
}

TEST _nl_tax_5c(void)
{ 
    administration::create_default(test_file_path);
    administration::company_info_set(_create_nl_business());
    add_default_nl_tax_rates();

    invoice inv = _create_nl_b2b_inv_outgoing();
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 20.0f, "NL/21"));
    administration::billing_item_add_to_invoice(&inv, _create_bi(1, 30.0f, "NL/9"));
    ASSERT_EQ(administration::invoice_add(&inv), A_ERR_SUCCESS);

    invoice inv2 = _create_nl_b2b_inv_incomming();  
    administration::billing_item_add_to_invoice(&inv2, _create_bi(1, 30.0f, "NL_IN/21/5B"));
    administration::billing_item_add_to_invoice(&inv2, _create_bi(1, 50.0f, "NL_IN/9/5B"));
    ASSERT_EQ(administration::invoice_add(&inv2), A_ERR_SUCCESS);

    tax_statement statement;
    administration::create_tax_statement(&statement);
    ASSERT_EQ(statement.report_count, 1);

    float total = inv.tax - inv2.tax;
    if (total < 0.0f) total = (float)ceil(total);
    else total = (float)floor(total);

    tax_line* tl3 = administration::get_tax_line_from_report(&statement.reports[0], "NL/5c");
    GREATEST_ASSERT_FEQ(tl3->total_tax, total);

    PASS();
}

SUITE(nl_tax_statement) {
    RUN_TEST(_nl_tax_1a);
    RUN_TEST(_nl_tax_1b);
    RUN_TEST(_nl_tax_1e);
    RUN_TEST(_nl_tax_2currency);

    RUN_TEST(_nl_tax_2a);

    RUN_TEST(_nl_tax_4a);
    RUN_TEST(_nl_tax_4b);

    RUN_TEST(_nl_tax_5a);
    RUN_TEST(_nl_tax_5b);
    RUN_TEST(_nl_tax_5c);
}