Add more tests around width calculations

Had to make the C function used public to avoid build failures.

CRToast/CRToastView.h

@@ -7,8 +7,19 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "CRToast.h"
 
-@class CRToast;
+/**
+ Calculate the width of the view given all necessary values of the given `CRToastView`s properties
+ 
+ @param fullContentWidth           full width of contentView to fill
+ @param fullContentHeight          full height of the content view. It is assumed the image & activity indicators frame is a square with sides the length of the height of the contentView.
+ @param showingImage               @c YES if an image is being shown and should be accounted for. @c NO otherwise.
+ @param imageAlignment             alignment of image. Only used if @c showingImage is set to @c YES
+ @param showingActivityIndicator   @c YES if an activity indicator is being shown and should be accounted for. @c NO otherwise.
+ @param activityIndicatorAlignment alignment of activity indicator. Only used if @c showingActivityIndicator is set to @c YES
+ */
+CGFloat CRContentWidthForAccessoryViewsWithAlignments(CGFloat fullContentWidth, CGFloat fullContentHeight, BOOL showingImage, CRToastAccessoryViewAlignment imageAlignment, BOOL showingActivityIndicator, CRToastAccessoryViewAlignment activityIndicatorAlignment);
 
 @interface CRToastView : UIView
 @property (nonatomic, strong) CRToast *toast;

CRToast/CRToastView.m

@@ -52,7 +52,7 @@ static CGFloat CRToastWidthOfViewWithAlignment(CGFloat height, BOOL showing, CRT
     height;
 }
 
-static CGFloat CRContentWidthForAccessoryViewsWithAlignments(CGFloat fullContentWidth, CGFloat fullContentHeight, BOOL showingImage, CRToastAccessoryViewAlignment imageAlignment, BOOL showingActivityIndicator, CRToastAccessoryViewAlignment activityIndicatorAlignment) {
+CGFloat CRContentWidthForAccessoryViewsWithAlignments(CGFloat fullContentWidth, CGFloat fullContentHeight, BOOL showingImage, CRToastAccessoryViewAlignment imageAlignment, BOOL showingActivityIndicator, CRToastAccessoryViewAlignment activityIndicatorAlignment) {
     CGFloat width = fullContentWidth;
 
     width -= CRToastWidthOfViewWithAlignment(fullContentHeight, showingImage, imageAlignment);

Tests/Unit Tests/CRToastViewTests.m

@@ -142,28 +142,38 @@ - (void)testActivityFrameRightAlignment {
 #pragma mark Width Calculations
 - (void)testWidthWithOnlyLeftItem {
 
+    CGFloat width = CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentLeft, NO, CRToastAccessoryViewAlignmentLeft);
+
+    XCTAssertTrue(width == 200, @"Width with only left item should be 200 (full width - (height x 1)). Instead was %f", width);
 }
 
 - (void)testWidthWithOnlyCenterItem {
+    CGFloat width = CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentCenter, NO, CRToastAccessoryViewAlignmentLeft);
 
+    XCTAssertTrue(width == 300, @"Width with only center item should be 300 (full width). Instead was %f", width);
 }
 
 - (void)testWidthWithOnlyRightItem {
+    CGFloat width = CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentRight, NO, CRToastAccessoryViewAlignmentLeft);
 
+    XCTAssertTrue(width == 200, @"Width with only center item should be 300 (full width - (height x 1)). Instead was %f", width);
 }
 
 - (void)testWidthWithLeftAndCenter {
+    CGFloat width = CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentLeft, YES, CRToastAccessoryViewAlignmentCenter);
 
+    XCTAssertTrue(width == 200, @"Width with left & center item should be 200 (full width - (height x 1)). Instead was %f", width);
 }
 
 - (void)testWidthWithLeftAndRight {
+    CGFloat width = CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentLeft, YES, CRToastAccessoryViewAlignmentRight);
 
+    XCTAssertTrue(width == 100, @"Width with left & right item should be 200 (full width - (height x 2)). Instead was %f", width);
 }
 
 - (void)testPerformanceExample {
-    // This is an example of a performance test case.
     [self measureBlock:^{
-        // Put the code you want to measure the time of here.
+        CRContentWidthForAccessoryViewsWithAlignments(300, 100, YES, CRToastAccessoryViewAlignmentLeft, YES, CRToastAccessoryViewAlignmentRight);
     }];
 }