Day 25 Part 1

Signed-off-by: James Griffin <james@unsupervised.ca>

twentyfive/day_twentyfive_test.go

@@ -0,0 +1,63 @@
+package twentyfive
+
+import "testing"
+
+func Test_generate_encryption(t *testing.T) {
+	card := key{
+		public: 5764801,
+		sub:    7,
+	}
+
+	door := key{
+		public: 17807724,
+		sub:    7,
+	}
+
+	card.determineLoopSize()
+	door.determineLoopSize()
+
+	if card.loopsize != 8 {
+		t.Logf("expected loop size of 8, got %d", card.loopsize)
+		t.Fail()
+	}
+
+	if door.loopsize != 11 {
+		t.Logf("expected loop size of 11, got %d", door.loopsize)
+		t.Fail()
+	}
+
+	encryption1 := card.encryption(door.public)
+	encryption2 := door.encryption(card.public)
+
+	if encryption1 != 14897079 {
+		t.Logf("Expected encryption key of 14897079, got %d", encryption1)
+		t.FailNow()
+	}
+
+	if encryption1 != encryption2 {
+		t.Logf("Expected to generate the same encryption key, got %d and %d", encryption1, encryption2)
+		t.Fail()
+	}
+}
+
+func Test_part_one(t *testing.T) {
+	card := key{
+		public: 2069194,
+		sub:    7,
+	}
+
+	door := key{
+		public: 16426071,
+		sub:    7,
+	}
+
+	card.determineLoopSize()
+	door.determineLoopSize()
+
+	encryption1 := card.encryption(door.public)
+
+	if encryption1 != 11576351 {
+		t.Logf("Expected encryption key 11576351, got %d", encryption1)
+		t.FailNow()
+	}
+}