Test and solution for day 1 of advent calendar.

2017/1/1_test.go

@@ -0,0 +1,19 @@
+package main
+
+import "testing"
+
+func TestOne(t *testing.T) {
+	for _, ts := range []struct {
+		in   string
+		want int
+	}{
+		{in: "1122", want: 3},
+		{in: "1111", want: 4},
+		{in: "1234", want: 0},
+		// {in:"91212129 produces
+	} {
+		if got := sum(ts.in); got != ts.want {
+			t.Errorf("sum(%q) = %d, want %d", ts.in, got, ts.want)
+		}
+	}
+}