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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/backend/print_backend.h"
#include "base/memory/scoped_refptr.h"
#include "printing/mojom/print.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
#if BUILDFLAG(IS_WIN)
#include "base/types/expected.h"
#endif // BUILDFLAG(IS_WIN)
namespace printing {
// PrintBackendTest makes use of a real print backend instance, and thus will
// interact with printer drivers installed on a system. This can be useful on
// machines which a developer has control over the driver installations, but is
// less useful on bots which are managed by the infra team.
// These tests are intended to be run manually by developers using the
// --run-manual flag.
class PrintBackendTest : public testing::Test {
public:
void SetUp() override {
print_backend_ = PrintBackend::CreateInstance(/*locale=*/"");
}
PrintBackend* GetPrintBackend() { return print_backend_.get(); }
private:
scoped_refptr<PrintBackend> print_backend_;
};
// Check behavior of `EnumeratePrinters()`. At least one of the tests
// {EnumeratePrintersSomeInstalled, EnumeratePrintersNoneInstalled} should
// fail, since a single machine can't have both some and no printers installed.
// A developer running these manually can verify that the appropriate test is
// passing for the given state of installed printer drivers on the system being
// checked.
TEST_F(PrintBackendTest, MANUAL_EnumeratePrintersSomeInstalled) {
PrinterList printer_list;
EXPECT_EQ(GetPrintBackend()->EnumeratePrinters(printer_list),
mojom::ResultCode::kSuccess);
EXPECT_FALSE(printer_list.empty());
DLOG(WARNING) << "Number of printers found: " << printer_list.size();
for (const auto& printer : printer_list) {
DLOG(WARNING) << "Found printer: `" << printer.printer_name << "`";
}
}
TEST_F(PrintBackendTest, MANUAL_EnumeratePrintersNoneInstalled) {
PrinterList printer_list;
EXPECT_EQ(GetPrintBackend()->EnumeratePrinters(printer_list),
mojom::ResultCode::kSuccess);
EXPECT_TRUE(printer_list.empty());
}
TEST_F(PrintBackendTest, PaperSupportsCustomSize) {
PrinterSemanticCapsAndDefaults::Paper paper("FEED", "feed", {100, 200},
{100, 200}, 500);
EXPECT_TRUE(paper.SupportsCustomSize());
}
TEST_F(PrintBackendTest, PaperDoesNotSupportCustomSize) {
PrinterSemanticCapsAndDefaults::Paper paper("FEED", "feed", {100, 200});
EXPECT_FALSE(paper.SupportsCustomSize());
}
TEST_F(PrintBackendTest, PaperSizeWithinBoundsDistinctSize) {
PrinterSemanticCapsAndDefaults::Paper paper("FEED", "feed", {100, 200});
// For paper that does not support custom sizes, the size has to match
// exactly.
EXPECT_TRUE(paper.IsSizeWithinBounds({100, 200}));
EXPECT_FALSE(paper.IsSizeWithinBounds({90, 200}));
EXPECT_FALSE(paper.IsSizeWithinBounds({100, 210}));
}
TEST_F(PrintBackendTest, PaperSizeWithinBoundsCustomSize) {
PrinterSemanticCapsAndDefaults::Paper paper("FEED", "feed", {100, 200},
{100, 200}, 500);
// For paper that supports custom sizes, the size has to match exactly or fall
// within the custom size range.
EXPECT_TRUE(paper.IsSizeWithinBounds({100, 200}));
EXPECT_TRUE(paper.IsSizeWithinBounds({100, 300}));
EXPECT_TRUE(paper.IsSizeWithinBounds({100, 500}));
EXPECT_FALSE(paper.IsSizeWithinBounds({101, 200}));
EXPECT_FALSE(paper.IsSizeWithinBounds({99, 200}));
EXPECT_FALSE(paper.IsSizeWithinBounds({100, 199}));
EXPECT_FALSE(paper.IsSizeWithinBounds({100, 501}));
}
#if BUILDFLAG(IS_WIN)
// This test is for the XPS API that read the XML capabilities of a
// specific printer.
TEST_F(PrintBackendTest, MANUAL_GetXmlPrinterCapabilitiesForXpsDriver) {
PrinterList printer_list;
EXPECT_EQ(GetPrintBackend()->EnumeratePrinters(printer_list),
mojom::ResultCode::kSuccess);
for (const auto& printer : printer_list) {
auto caps = GetPrintBackend()->GetXmlPrinterCapabilitiesForXpsDriver(
printer.printer_name);
DLOG(WARNING) << "Capabilities for printer " << printer.printer_name;
// Do not fail with assert on lack of value, so that entire list of
// printers can be checked.
EXPECT_TRUE(caps.has_value());
if (caps.has_value()) {
DLOG(WARNING) << caps.value();
}
}
}
#endif // BUILDFLAG(IS_WIN)
} // namespace printing
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