VulpesOS/gaia/apps/camera/test/unit/lib/camera-utils_test.js

/*jshint maxlen:false*/
/*global req*/
'use strict';

suite('utils/camera-utils', function() {
  var CameraUtils;

  suiteSetup(function(done) {
    var self = this;

    this.modules = {};

    requirejs([
      'lib/camera-utils'
    ], function(_CameraUtils) {
      CameraUtils = self.modules.CameraUtils = _CameraUtils;

      done();
    });
  });

  setup(function() {

  });

  suite('scaleSizeToFitViewport', function() {
    setup(function() {

    });

    test('Should scale image size to *FIT* viewport ' +
         'preserving aspect ratio', function() {
      var viewportSize, imageSize, outputSize;

      // Case where image size exactly matches viewport size
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 720,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1280);

      // Case where image size has larger width, smaller height than viewport
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 800,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1152);

      // Case where image size has larger height, smaller width than viewport
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 720,
        height: 1440
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 640);
      assert.equal(outputSize.height, 1280);

      // Case where image size has larger width, larger height than viewport
      // (different aspect ratio)
      viewportSize = {
        width: 600,
        height: 800
      };
      imageSize = {
        width: 720,
        height: 1152
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 500);
      assert.equal(outputSize.height, 800);

      // Case where image size has larger width, larger height than viewport
      // (same aspect ratio)
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 1080,
        height: 1920
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1280);

      // Case where image size has smaller width, smaller height than viewport
      // (different aspect ratio)
      viewportSize = {
        width: 720,
        height: 1152
      };
      imageSize = {
        width: 600,
        height: 800
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 960);

      // Case where image size has smaller width, smaller height than viewport
      // (same aspect ratio)
      viewportSize = {
        width: 1080,
        height: 1920
      };
      imageSize = {
        width: 720,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFitViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 1080);
      assert.equal(outputSize.height, 1920);
    });
  });

  suite('scaleSizeToFillViewport', function() {
    setup(function() {});

    test('Should scale image size to *FILL* viewport ' +
         'preserving aspect ratio', function() {
      var viewportSize, imageSize, outputSize;

      // Case where image size exactly matches viewport size
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 720,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1280);

      // Case where image size has larger width, smaller height than viewport
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 800,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 800);
      assert.equal(outputSize.height, 1280);

      // Case where image size has larger height, smaller width than viewport
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 720,
        height: 1440
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1440);

      // Case where image size has larger width, larger height than viewport
      // (different aspect ratio)
      viewportSize = {
        width: 600,
        height: 800
      };
      imageSize = {
        width: 720,
        height: 1152
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 600);
      assert.equal(outputSize.height, 960);

      // Case where image size has larger width, larger height than viewport
      // (same aspect ratio)
      viewportSize = {
        width: 720,
        height: 1280
      };
      imageSize = {
        width: 1080,
        height: 1920
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 720);
      assert.equal(outputSize.height, 1280);

      // Case where image size has smaller width, smaller height than viewport
      // (different aspect ratio)
      viewportSize = {
        width: 720,
        height: 1152
      };
      imageSize = {
        width: 600,
        height: 800
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 864);
      assert.equal(outputSize.height, 1152);

      // Case where image size has smaller width, smaller height than viewport
      // (same aspect ratio)
      viewportSize = {
        width: 1080,
        height: 1920
      };
      imageSize = {
        width: 720,
        height: 1280
      };
      outputSize = CameraUtils.scaleSizeToFillViewport(viewportSize, imageSize);
      assert.equal(outputSize.width, 1080);
      assert.equal(outputSize.height, 1920);
    });
  });
});