/* * This file is subject to the terms and conditions defined in * file 'LICENSE.md', which is part of this source code package. */ package model import ( "testing" ) func TestImageResampling(t *testing.T) { img := Image{} // Case 1: // Data: // 4x8bit: 00000001 11101000 01101110 00001010 // Resample as 1bit: // // 4x8bit: 00000001 11101000 01101110 00001010 // Downsample to 1bit // 4x8bit: 00000000 00000001 00000000 00000000 // 4x1bit: 0100 // Padding with 4x00 // -> 01000000 = 64 decimal // img.BitsPerComponent = 8 img.Data = []byte{1, 232, 110, 10} //int(this.Width) * int(this.Height) * this.ColorComponents img.Width = 4 img.ColorComponents = 1 img.Height = 1 img.Resample(1) if len(img.Data) != 1 { t.Errorf("Incorrect length != 1 (%d)", len(img.Data)) return } if img.Data[0] != 64 { t.Errorf("Value != 4 (%d)", img.Data[0]) } // Case 2: // Data: // 4x8bit: 00000001 11101000 01101110 00001010 00000001 11101000 01101110 00001010 00000001 11101000 01101110 00001010 // 0 1 0 0 0 1 0 0 0 1 0 0 // 010001000100 // -> 01000100 0100(0000) // -> 68 64 img.BitsPerComponent = 8 img.Data = []byte{1, 232, 110, 10, 1, 232, 110, 10, 1, 232, 110, 10} img.Width = 12 img.ColorComponents = 1 img.Height = 1 img.Resample(1) if len(img.Data) != 2 { t.Errorf("Incorrect length != 2 (%d)", len(img.Data)) return } if img.Data[0] != 68 { t.Errorf("Value != 68 (%d)", img.Data[0]) } if img.Data[1] != 64 { t.Errorf("Value != 64 (%d)", img.Data[1]) } }