diamond_test.go

package main

import "testing"

func TestMakeDiamond(t *testing.T) {
	tables := []struct {
		letter byte
		diamond string
	} {
		{'A', "A"},
		{'Z', "                         A\n                        B B\n                       C   C\n                      D     D\n                     E       E\n                    F         F\n                   G           G\n                  H             H\n                 I               I\n                J                 J\n               K                   K\n              L                     L\n             M                       M\n            N                         N\n           O                           O\n          P                             P\n         Q                               Q\n        R                                 R\n       S                                   S\n      T                                     T\n     U                                       U\n    V                                         V\n   W                                           W\n  X                                             X\n Y                                               Y\nZ                                                 Z\n Y                                               Y\n  X                                             X\n   W                                           W\n    V                                         V\n     U                                       U\n      T                                     T\n       S                                   S\n        R                                 R\n         Q                               Q\n          P                             P\n           O                           O\n            N                         N\n             M                       M\n              L                     L\n               K                   K\n                J                 J\n                 I               I\n                  H             H\n                   G           G\n                    F         F\n                     E       E\n                      D     D\n                       C   C\n                        B B\n                         A"},
		{'M', "            A\n           B B\n          C   C\n         D     D\n        E       E\n       F         F\n      G           G\n     H             H\n    I               I\n   J                 J\n  K                   K\n L                     L\nM                       M\n L                     L\n  K                   K\n   J                 J\n    I               I\n     H             H\n      G           G\n       F         F\n        E       E\n         D     D\n          C   C\n           B B\n            A"},
	}

	for _, table := range tables {
		d := makeDiamond(table.letter)
		if d != table.diamond {
			t.Errorf("Got :\n%s\nExpected :\n%s\n", d, table.diamond)
		}
	}
}