test: add unit test

2020/day02/main_test.go

@@ -0,0 +1,29 @@
+package main
+
+import "testing"
+
+func TestPartOne(t *testing.T) {
+	input := []string{
+		"1-3 a: abcde",
+		"1-3 b: cdefg",
+		"2-9 c: ccccccccc",
+	}
+	expected := 2
+	got := PartOne(input)
+	if got != expected {
+		t.Errorf("PartOne(%v) = %d, want %d", input, got, expected)
+	}
+}
+
+func TestPartTwo(t *testing.T) {
+	input := []string{
+		"1-3 a: abcde",
+		"1-3 b: cdefg",
+		"2-9 c: ccccccccc",
+	}
+	expected := 1
+	got := PartTwo(input)
+	if got != expected {
+		t.Errorf("PartOne(%v) = %d, want %d", input, got, expected)
+	}
+}