Add tests for parsing board input files

tests/boards/4x4_between_whitespace.board

@@ -0,0 +1,4 @@
+u, n,r        ,e
+qu, n,i,  l
+i  ,s,h, a
+s ,e , l,b

tests/boards/4x4_blank_lines.board

@@ -0,0 +1,9 @@
+
+
+u,n,r,e
+qu,n,i,l
+i,s,h,a
+
+s,e,l,b
+
+

tests/boards/4x4_clean.board

@@ -0,0 +1,4 @@
+u,n,r,e
+qu,n,i,l
+i,s,h,a
+s,e,l,b

tests/boards/4x4_inconsistent_width.board

@@ -0,0 +1,4 @@
+u,n,r,e,a,i
+qu,n,i,l
+i,s,h,a,j
+s,e,l

tests/boards/4x4_leading_whitespace.board

@@ -0,0 +1,4 @@
+  u,n,r,e
+    qu,n,i,l
+ i,s,h,a
+s,e,l,b

tests/boards/4x4_trailing_whitespace.board

@@ -0,0 +1,4 @@
+u,n,r,e 
+qu,n,i,l      
+i,s,h,a     
+s,e,l,b  

tests/boards/4x4_wrong_size.board

@@ -0,0 +1,4 @@
+u,n,r,e,b
+qu,n,i,l
+i,s,h,a,g,i
+s,e,l,b