1 require File.expand_path(File.join(File.dirname(__FILE__), '..', 'test_helper'))
3 class MiniMagickTest < Test::Unit::TestCase
4 attachment_model MiniMagickAttachment
6 if Object.const_defined?(:MiniMagick)
7 def test_should_resize_image
8 attachment = upload_file :filename => '/files/rails.png'
9 assert_valid attachment
10 assert attachment.image?
11 # test MiniMagick thumbnail
12 assert_equal 43, attachment.width
13 assert_equal 55, attachment.height
15 thumb = attachment.thumbnails.detect { |t| t.filename =~ /_thumb/ }
16 geo = attachment.thumbnails.detect { |t| t.filename =~ /_geometry/ }
18 # test exact resize dimensions
19 assert_equal 50, thumb.width
20 assert_equal 51, thumb.height
22 # test geometry string
23 assert_equal 31, geo.width
24 assert_equal 40, geo.height
27 def test_should_crop_image(klass = ImageThumbnailCrop)
28 attachment_model klass
29 attachment = upload_file :filename => '/files/rails.png'
30 assert_valid attachment
31 assert attachment.image?
32 # has_attachment :thumbnails => { :square => "50x50c", :vertical => "30x60c", :horizontal => "60x30c"}
34 square = attachment.thumbnails.detect { |t| t.filename =~ /_square/ }
35 vertical = attachment.thumbnails.detect { |t| t.filename =~ /_vertical/ }
36 horizontal = attachment.thumbnails.detect { |t| t.filename =~ /_horizontal/ }
39 assert_equal 50, square.width
40 assert_equal 50, square.height
42 assert_equal 30, vertical.width
43 assert_equal 60, vertical.height
45 assert_equal 60, horizontal.width
46 assert_equal 30, horizontal.height
49 # tests the first step in resize, crop the image in original size to right format
50 def test_should_crop_image_right(klass = ImageThumbnailCrop)
51 @@testcases.collect do |testcase|
52 image_width, image_height, thumb_width, thumb_height = testcase[:data]
53 image_aspect, thumb_aspect = image_width/image_height, thumb_width/thumb_height
54 crop_comand = klass.calculate_offset(image_width, image_height, image_aspect, thumb_width, thumb_height,thumb_aspect)
55 # pattern matching on crop command
56 if testcase.has_key?(:height)
57 assert crop_comand.match(/^#{image_width}x#{testcase[:height]}\+0\+#{testcase[:yoffset]}$/)
59 assert crop_comand.match(/^#{testcase[:width]}x#{image_height}\+#{testcase[:xoffset]}\+0$/)
66 puts "MiniMagick not loaded, tests not running"
71 # image_aspect <= 1 && thumb_aspect >= 1
72 {:data => [10.0,40.0,2.0,1.0], :height => 5.0, :yoffset => 17.5}, # 1b
73 {:data => [10.0,40.0,1.0,1.0], :height => 10.0, :yoffset => 15.0}, # 1b
75 # image_aspect < 1 && thumb_aspect < 1
76 {:data => [10.0,40.0,1.0,2.0], :height => 20.0, :yoffset => 10.0}, # 1a
77 {:data => [2.0,3.0,1.0,2.0], :width => 1.5, :xoffset => 0.25}, # 1a
79 # image_aspect = thumb_aspect
80 {:data => [10.0,10.0,1.0,1.0], :height => 10.0, :yoffset => 0.0}, # QUADRAT 1c
82 # image_aspect >= 1 && thumb_aspect > 1 && image_aspect < thumb_aspect
83 {:data => [6.0,3.0,4.0,1.0], :height => 1.5, :yoffset => 0.75}, # 2b
84 {:data => [6.0,6.0,4.0,1.0], :height => 1.5, :yoffset => 2.25}, # 2b
86 # image_aspect > 1 && thumb_aspect > 1 && image_aspect > thumb_aspect
87 {:data => [9.0,3.0,2.0,1.0], :width => 6.0, :xoffset => 1.5}, # 2a
89 # image_aspect > 1 && thumb_aspect < 1 && image_aspect < thumb_aspect
90 {:data => [10.0,5.0,0.1,2.0], :width => 0.25, :xoffset => 4.875}, # 4
91 {:data => [10.0,5.0,1.0,2.0], :width => 2.5, :xoffset => 3.75}, # 4
93 # image_aspect > 1 && thumb_aspect > 1 && image_aspect > thumb_aspect
94 {:data => [9.0,3.0,2.0,1.0], :width => 6.0, :xoffset => 1.5}, # 3a
95 # image_aspect > 1 && thumb_aspect > 1 && image_aspect < thumb_aspect
96 {:data => [9.0,3.0,5.0,1.0], :height => 1.8, :yoffset => 0.6} # 3a