add some tests

Author: Remi-Gau

src/dot/decomposeMotion.m

@@ -1,5 +1,12 @@
 function [horVector, vertVector] = decomposeMotion(angleMotion)
+    % [horVector, vertVector] = decomposeMotion(angleMotion)
+    %
     % decompose angle of start motion into horizontal and vertical vector
+    %
+    % - angleMotion: in degrees
+    % - horVector: horizontal component of motion
+    % - vertVector: vertical component of motion
+    
     horVector = cos(pi * angleMotion / 180);
     vertVector = -sin(pi * angleMotion / 180);
 end

src/errors/errorDistanceToScreen.m

@@ -0,0 +1,12 @@
+function errorDistanceToScreen(cfg)
+    
+    errorStruct.message = sprintf([
+        'Distance to monitor seems too small.\n' ...
+        'It should be in centimeters.\n' ...
+        'cfg.screen.monitorDistance = %f'], cfg.screen.monitorDistance);
+    
+    errorStruct.identifier = 'computeFOV:wrongDistanceToScreen';
+
+    error(errorStruct);
+end
+

src/utils/computeFOV.m

@@ -9,6 +9,10 @@
     %  and D is the distance to the object.
     %  The result obtained is in radians.
     %
+    
+    if cfg.screen.monitorDistance < 2
+        errorDistanceToScreen(cfg);
+    end
 
     FOV =  ...
         180 / pi * ...

tests/test_computeFOV.m

@@ -0,0 +1,30 @@
+function test_suite = test_computeFOV %#ok<*STOUT>
+    try % assignment of 'localfunctions' is necessary in Matlab >= 2016
+        test_functions = localfunctions(); %#ok<*NASGU>
+    catch % no problem; early Matlab versions can use initTestSuite fine
+    end
+    initTestSuite;
+end
+
+function test_computeFOVBasic()
+    
+    cfg.screen.monitorWidth = 25;
+    cfg.screen.monitorDistance = 50;
+    
+    FOV = computeFOV(cfg);
+    
+    expectedFOV = 28.072;
+    
+    assertElementsAlmostEqual(expectedFOV, FOV, 'absolute', 1e-3)
+    
+end
+
+function test_computeFOVError()
+    
+    cfg.screen.monitorDistance = 1.2; % error as distance is most likely in meter
+    
+    assertExceptionThrown(@()computeFOV(cfg), ...
+        'computeFOV:wrongDistanceToScreen');
+    
+end
+

tests/test_decomposeMotion.m

@@ -0,0 +1,32 @@
+function test_suite = test_decomposeMotion %#ok<*STOUT>
+    try % assignment of 'localfunctions' is necessary in Matlab >= 2016
+        test_functions = localfunctions(); %#ok<*NASGU>
+    catch % no problem; early Matlab versions can use initTestSuite fine
+    end
+    initTestSuite;
+end
+
+function test_decomposeMotionBasic()
+    
+    [horVector, vertVector] = decomposeMotion(0);
+    expectedOutput = [1, 0];
+    assertEqual(expectedOutput, [horVector, vertVector]);
+    
+    [horVector, vertVector] = decomposeMotion(90);
+    expectedOutput = [0, -1];
+    assertElementsAlmostEqual(expectedOutput, [horVector, vertVector]);
+    
+    [horVector, vertVector] = decomposeMotion(180);
+    expectedOutput = [-1, 0];
+    assertElementsAlmostEqual(expectedOutput, [horVector, vertVector]);
+    
+    [horVector, vertVector] = decomposeMotion(270);
+    expectedOutput = [0, 1];
+    assertElementsAlmostEqual(expectedOutput, [horVector, vertVector]);
+    
+    [horVector, vertVector] = decomposeMotion(360);
+    expectedOutput = [1, 0];
+    assertElementsAlmostEqual(expectedOutput, [horVector, vertVector]);
+    
+     
+end

tests/test_degToPix.m

@@ -0,0 +1,21 @@
+function test_suite = test_degToPix %#ok<*STOUT>
+    try % assignment of 'localfunctions' is necessary in Matlab >= 2016
+        test_functions = localfunctions(); %#ok<*NASGU>
+    catch % no problem; early Matlab versions can use initTestSuite fine
+    end
+    initTestSuite;
+end
+
+function test_degToPixBasic()
+    
+    fixation.width = 2;
+    cfg.screen.ppd = 10;
+    
+    fixation = degToPix('width', fixation, cfg);
+    
+    expectedStruct.width = 2;
+    expectedStruct.widthPix = 20;
+    
+    assertEqual(expectedStruct, fixation);
+     
+end