// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/omnibox/browser/omnibox_popup_model.h"
#include "testing/gtest/include/gtest/gtest.h"

TEST(OmniboxPopupModelTest, ComputeMatchMaxWidths) {
    int contents_max_width, description_max_width;
    const int separator_width = 10;
    const int kMinimumContentsWidth = 300;
    int contents_width, description_width, available_width;

    // Both contents and description fit fine.
    contents_width = 100;
    description_width = 50;
    available_width = 200;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ(description_width, description_max_width);

    // Contents should be given as much space as it wants up to 300 pixels.
    contents_width = 100;
    description_width = 50;
    available_width = 100;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ(0, description_max_width);

    // Description should be hidden if it's at least 75 pixels wide but doesn't
    // get 75 pixels of space.
    contents_width = 300;
    description_width = 100;
    available_width = 384;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ(0, description_max_width);

    // If contents and description are on separate lines, each can take the full
    // available width.
    contents_width = 300;
    description_width = 100;
    available_width = 384;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        true, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ(description_width, description_max_width);

    // Both contents and description will be limited.
    contents_width = 310;
    description_width = 150;
    available_width = 400;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(kMinimumContentsWidth, contents_max_width);
    EXPECT_EQ(available_width - kMinimumContentsWidth - separator_width,
              description_max_width);

    // Contents takes all available space.
    contents_width = 400;
    description_width = 0;
    available_width = 200;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(available_width, contents_max_width);
    EXPECT_EQ(0, description_max_width);

    // Large contents will be truncated but small description won't if two line
    // suggestion.
    contents_width = 400;
    description_width = 100;
    available_width = 200;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        true, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(available_width, contents_max_width);
    EXPECT_EQ(description_width, description_max_width);

    // Large description will be truncated but small contents won't if two line
    // suggestion.
    contents_width = 100;
    description_width = 400;
    available_width = 200;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        true, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ(available_width, description_max_width);

    // Half and half.
    contents_width = 395;
    description_width = 395;
    available_width = 700;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(345, contents_max_width);
    EXPECT_EQ(345, description_max_width);

    // When we disallow shrinking the contents, it should get as much space as
    // it wants.
    contents_width = 395;
    description_width = 395;
    available_width = 700;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, false, &contents_max_width, &description_max_width);
    EXPECT_EQ(contents_width, contents_max_width);
    EXPECT_EQ((available_width - contents_width - separator_width),
              description_max_width);

    // (available_width - separator_width) is odd, so contents gets the extra
    // pixel.
    contents_width = 395;
    description_width = 395;
    available_width = 699;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(345, contents_max_width);
    EXPECT_EQ(344, description_max_width);

    // Not enough space to draw anything.
    contents_width = 1;
    description_width = 1;
    available_width = 0;
    OmniboxPopupModel::ComputeMatchMaxWidths(
        contents_width, separator_width, description_width, available_width,
        false, true, &contents_max_width, &description_max_width);
    EXPECT_EQ(0, contents_max_width);
    EXPECT_EQ(0, description_max_width);
}