Day 8 solution

eight/display_test.go

@@ -0,0 +1,58 @@
+package eight
+
+import "testing"
+
+func Test_read(t *testing.T) {
+	d := display{}
+	if err := d.load("test_input.txt"); err != nil {
+		t.Log(err)
+		t.FailNow()
+	}
+
+	if len(d.outputs) != 10 {
+		t.Logf("Expected 10 input sets, found %d", len(d.outputs))
+		t.Fail()
+	}
+
+	if len(d.outputs[0].signals) != 10 {
+		t.Logf("Expected 10 inputs, found %d", len(d.outputs[0].signals))
+		t.Fail()
+	}
+
+	if len(d.outputs[0].outputs) != 4 {
+		t.Logf("Expected 4 outputs, found %d", len(d.outputs[0].outputs))
+		t.Fail()
+	}
+}
+
+func Test_uniqueOutputs(t *testing.T) {
+	d := display{}
+	d.load("test_input.txt")
+
+	if count := d.uniqueOuputs(); count != 26 {
+		t.Logf("Expected 26 unique output digits, found %d", count)
+		t.Fail()
+	}
+}
+
+func Test_decode(t *testing.T) {
+	d := display{}
+	d.load("test_input.txt")
+
+	o := d.outputs[0]
+
+	if decoded := o.decode(); decoded != 8394 {
+		t.Logf("Expected output of 8394, decoded %d", decoded)
+		t.Fail()
+	}
+}
+
+func Test_outputSum(t *testing.T) {
+	d := display{}
+	d.load("test_input.txt")
+
+	if sum := d.outputSum(); sum != 61229 {
+		t.Logf("Expected outputs to sum to 61229, calculated %d", sum)
+		t.Fail()
+	}
+}