Added RLE parser by N.Hoffmann and incorporated it onto my gol.

rle/rle_test.go

@@ -0,0 +1,84 @@
+package rle
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestRLE(t *testing.T) {
+	t.Run("Parse", func(t *testing.T) {
+		tests := []struct {
+			input           string
+			expectedPattern [][]int
+			expectedComment string
+			expectedWidth   int
+			expectedHeight  int
+			expectedRule    string
+		}{
+			{
+				input: `#C This is a glider.
+				x = 3, y = 3
+				bo$2bo$3o!`,
+				expectedPattern: [][]int{
+					{0, 1, 0},
+					{0, 0, 1},
+					{1, 1, 1},
+				},
+				expectedWidth:  3,
+				expectedHeight: 3,
+				expectedRule:   "",
+			},
+			{
+				input: `#N Gosper glider gun
+				#C This was the first gun discovered.
+				#C As its name suggests, it was discovered by Bill Gosper.
+				x = 36, y = 9, rule = B3/S23
+				24bo$22bobo$12b2o6b2o12b2o$11bo3bo4b2o12b2o$2o8bo5bo3b2o$2o8bo3bob2o4b
+				obo$10bo5bo7bo$11bo3bo$12b2o!`,
+				expectedPattern: [][]int{
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1},
+					{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+					{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+				},
+				expectedWidth:  36,
+				expectedHeight: 9,
+				expectedRule:   "B3/S23",
+			},
+		}
+
+		for _, test := range tests {
+			rle, err := Parse(test.input)
+
+			if err != nil {
+				t.Error(err)
+			}
+
+			if rle.Width != test.expectedWidth {
+				t.Errorf("Width dos not match")
+			}
+
+			if rle.Height != test.expectedHeight {
+				t.Errorf("Height does not match")
+			}
+
+			if rle.Rule != test.expectedRule {
+				t.Errorf("Rule does not match")
+			}
+
+			if !reflect.DeepEqual(rle.Pattern, test.expectedPattern) {
+				t.Errorf(
+					"Patterns do not match.\nExpected: %v\nGot: %v",
+					test.expectedPattern,
+					rle.Pattern,
+				)
+			}
+		}
+	})
+
+}