Day 9: Part 1 and 2

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

nine/day_nine_test.go

@@ -0,0 +1,45 @@
+package nine
+
+import "testing"
+
+func Test_program_load(t *testing.T) {
+	x := xmas{}
+	err := x.load("sample.txt", 5)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	if len(x.values) != 20 {
+		t.Logf("Expected 20 values, Got %d values", len(x.values))
+		t.FailNow()
+	}
+}
+
+func Test_weakness_detection(t *testing.T) {
+	x, err := newXmas("sample.txt", 5)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	v, err := x.detectVulnerability()
+	if err != nil || v != 127 {
+		t.Logf("Expected vulnerability of 127, Got vulnerability %d", v)
+		t.FailNow()
+	}
+}
+
+func Test_weakness_compute(t *testing.T) {
+	x, err := newXmas("sample.txt", 5)
+	if err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	e, err := x.computeWeakness()
+	if err != nil || e != 62 {
+		t.Logf("Expected weaknes 62, Got weakness %d", e)
+		t.FailNow()
+	}
+}