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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/new_tab_page/composebox/composebox_fieldtrial.h"
#include <string>
#include "base/base64.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/scoped_feature_list.h"
#include "chrome/grit/generated_resources.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/omnibox_proto/ntp_composebox_config.pb.h"
#include "ui/base/l10n/l10n_util.h"
namespace ntp_composebox {
namespace {
std::string SerializeAndBase64EncodeProto(
const google::protobuf::MessageLite& proto) {
std::string serialized_proto;
proto.SerializeToString(&serialized_proto);
return base::Base64Encode(serialized_proto);
}
} // namespace
class NtpComposeboxFieldTrialTest : public testing::Test {
public:
ScopedFeatureConfigForTesting scoped_config_;
};
// Tests the NTP Composebox configuration when the feature is disabled.
TEST_F(NtpComposeboxFieldTrialTest, NTPComposeboxConfig_Disabled) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndDisableFeature(kNtpComposebox);
base::HistogramTester histogram_tester;
scoped_config_.Reset();
EXPECT_FALSE(scoped_config_.Get().enabled);
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
EXPECT_EQ(config.entry_point().num_page_load_animations(), 3);
histogram_tester.ExpectTotalCount(kConfigParamParseSuccessHistogram, 0);
}
// Tests the NTP Composebox configuration when the feature is enabled with the
// default parameter.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_DefaultConfiguration) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeature(kNtpComposebox);
base::HistogramTester histogram_tester;
scoped_config_.Reset();
EXPECT_TRUE(scoped_config_.Get().enabled);
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
EXPECT_EQ(config.entry_point().num_page_load_animations(), 3);
auto composebox = config.composebox();
EXPECT_TRUE(composebox.close_by_escape());
EXPECT_TRUE(composebox.close_by_click_outside());
auto image_upload = config.composebox().image_upload();
EXPECT_EQ(image_upload.enable_webp_encoding(), false);
EXPECT_EQ(image_upload.downscale_max_image_size(), 1500000);
EXPECT_EQ(image_upload.downscale_max_image_width(), 1600);
EXPECT_EQ(image_upload.downscale_max_image_height(), 1600);
EXPECT_EQ(image_upload.image_compression_quality(), 40);
EXPECT_THAT(image_upload.mime_types_allowed(), "image/*");
auto attachment_upload = config.composebox().attachment_upload();
EXPECT_EQ(attachment_upload.max_size_bytes(), 200000000);
EXPECT_THAT(attachment_upload.mime_types_allowed(), ".pdf,application/pdf");
EXPECT_EQ(composebox.max_num_files(), 1);
EXPECT_EQ(composebox.input_placeholder_text(),
l10n_util::GetStringUTF8(IDS_NTP_COMPOSE_PLACEHOLDER_TEXT));
histogram_tester.ExpectTotalCount(kConfigParamParseSuccessHistogram, 0);
}
// Tests the NTP Composebox configuration when the feature is enabled with an
// invalid Base64-encoded proto parameter.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Invalid_Configuration) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox, {{kConfigParam.name, "hello world"}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
EXPECT_EQ(config.entry_point().num_page_load_animations(), 3);
histogram_tester.ExpectTotalCount(kConfigParamParseSuccessHistogram, 1);
histogram_tester.ExpectBucketCount(kConfigParamParseSuccessHistogram, false,
1);
}
// Tests the NTP Composebox configuration when the feature is enabled with a
// valid Base64-encoded proto parameter that does not set a value.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Valid_Unset_Configuration) {
omnibox::NTPComposeboxConfig fieldtrial_config;
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox,
{{kConfigParam.name, SerializeAndBase64EncodeProto(fieldtrial_config)}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
EXPECT_EQ(config.entry_point().num_page_load_animations(), 3);
histogram_tester.ExpectTotalCount(kConfigParamParseSuccessHistogram, 0);
}
// Tests the NTP Composebox configuration when the feature is enabled with a
// valid Base64-encoded proto parameter that sets a value.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Valid_Set_Configuration) {
omnibox::NTPComposeboxConfig fieldtrial_config;
fieldtrial_config.mutable_entry_point()->set_num_page_load_animations(5);
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox,
{{kConfigParam.name, SerializeAndBase64EncodeProto(fieldtrial_config)}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
EXPECT_TRUE(scoped_config_.Get().enabled);
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
EXPECT_EQ(config.entry_point().num_page_load_animations(), 5);
histogram_tester.ExpectTotalCount(kConfigParamParseSuccessHistogram, 1);
histogram_tester.ExpectBucketCount(kConfigParamParseSuccessHistogram, true,
1);
}
// Tests that setting `mime_types_allowed` for images in the `fieldtrial_config`
// overrides the default image mime types.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Valid_OverrideImageMimeTypes) {
omnibox::NTPComposeboxConfig fieldtrial_config;
fieldtrial_config.mutable_composebox()
->mutable_image_upload()
->set_mime_types_allowed("image/png");
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox,
{{kConfigParam.name, SerializeAndBase64EncodeProto(fieldtrial_config)}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
// Check that the image mime types were overridden.
EXPECT_THAT(config.composebox().image_upload().mime_types_allowed(),
"image/png");
histogram_tester.ExpectUniqueSample(kConfigParamParseSuccessHistogram, true,
1);
}
// Tests that setting `mime_types_allowed` for attachments in the
// `fieldtrial_config` overrides the default attachment mime types.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Valid_OverrideAttachmentMimeTypes) {
omnibox::NTPComposeboxConfig fieldtrial_config;
fieldtrial_config.mutable_composebox()
->mutable_attachment_upload()
->set_mime_types_allowed("text/plain");
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox,
{{kConfigParam.name, SerializeAndBase64EncodeProto(fieldtrial_config)}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
// Check that the attachment mime types were overridden.
EXPECT_THAT(config.composebox().attachment_upload().mime_types_allowed(),
"text/plain");
histogram_tester.ExpectUniqueSample(kConfigParamParseSuccessHistogram, true,
1);
}
// Tests that providing an empty `mime_types_allowed` value in the fieldtrial
// config does not clear the default value.
TEST_F(NtpComposeboxFieldTrialTest,
NTPComposeboxConfig_Enabled_Valid_ClearMimeTypes) {
omnibox::NTPComposeboxConfig fieldtrial_config;
// Providing an empty `mime_types_allowed`, will not clear the default
// config.
fieldtrial_config.mutable_composebox()
->mutable_image_upload()
->mime_types_allowed();
fieldtrial_config.mutable_composebox()
->mutable_attachment_upload()
->mime_types_allowed();
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitAndEnableFeatureWithParameters(
kNtpComposebox,
{{kConfigParam.name, SerializeAndBase64EncodeProto(fieldtrial_config)}});
base::HistogramTester histogram_tester;
scoped_config_.Reset();
omnibox::NTPComposeboxConfig config = scoped_config_.Get().config;
// Check that both default mime type lists were cleared.
EXPECT_THAT(config.composebox().image_upload().mime_types_allowed(),
"image/*");
EXPECT_THAT(config.composebox().attachment_upload().mime_types_allowed(),
".pdf,application/pdf");
histogram_tester.ExpectUniqueSample(kConfigParamParseSuccessHistogram, true,
1);
}
} // namespace ntp_composebox
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