Add solution for day 3

three/diagnostic_test.go

@@ -0,0 +1,43 @@
+package three
+
+import "testing"
+
+var test_input = []string{
+	"00100",
+	"11110",
+	"10110",
+	"10111",
+	"10101",
+	"01111",
+	"00111",
+	"11100",
+	"10000",
+	"11001",
+	"00010",
+	"01010",
+}
+
+func Test_read(t *testing.T) {
+	r := report{}
+	if err := r.read("input.txt"); err != nil {
+		t.FailNow()
+	}
+
+	if len(r.values) != 1000 {
+		t.Logf("Expected 1000 values, found %d", len(r.values))
+		t.Fail()
+	}
+}
+
+func Test_computeCO2Rating(t *testing.T) {
+	r := report{
+		values: test_input,
+	}
+
+	r.computeCO2Rating()
+
+	if r.co2Rating != 10 {
+		t.Logf("Expected a CO2 rating of 10, got %d", r.co2Rating)
+		t.Fail()
+	}
+}