Part 1 and first pass at Part 2

fifteen/path_test.go

@@ -0,0 +1,44 @@
+package fifteen
+
+import "testing"
+
+func Test_read(t *testing.T) {
+	p := path{}
+	if err := p.load("test_input.txt"); err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	if len(p.riskLevel) != 10 {
+		t.Logf("Expected 10 rows, found %d", len(p.riskLevel))
+		t.Fail()
+	}
+
+	if len(p.riskLevel[0]) != 10 {
+		t.Logf("Expected 10 rows, found %d", len(p.riskLevel[0]))
+		t.Fail()
+	}
+}
+
+func Test_totalRisk(t *testing.T) {
+	p := path{}
+	p.load("test_input.txt")
+
+	if value := p.totalRisk(); value != 40 {
+		t.Logf("Expected a total risk of 40, found %d", value)
+		t.Fail()
+	}
+}
+
+func Test_totalRiskScaled(t *testing.T) {
+	p := path{}
+	p.load("test_input.txt")
+	p = *p.scale(5, 5)
+
+	p.print()
+
+	if value := p.totalRisk(); value != 315 {
+		t.Logf("Expected a total risk of 315, found %d", value)
+		t.Fail()
+	}
+}