node/node_test.go

package node_test

import (
	"encoding/json"
	"testing"

	"git.red-green.com/david/node"
)

func TestNewNode(t *testing.T) {
	n := node.NewNode()
	if n.Name() != "" || n.Data() != nil || n.Parent() != nil || n.Len() != 0 {
		t.Fail()
		t.Logf("NewNode should return an empty struct, not %#v", n)
	}
	n = node.NewNodeWithName("taco")
	if n.Name() != "taco" || n.Data() != nil || n.Parent() != nil || n.Len() != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("NewNodeWithName should set name, not %#v", n)
	}
	n = node.NewNodeWithData("taco")
	if n.Name() != "" || n.Data() != "taco" || n.Parent() != nil || n.Len() != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("NewNodeWithData should set data, not %#v", n)
	}
	n = node.NewNodeWithNameAndData("taco", 2)
	if n.Name() != "taco" || n.Data() != 2 || n.Parent() != nil || n.Len() != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("NewNodeWithNameAndData should set name and data, not %#v", n)
	}
	n = node.NewNodeWithDataAndName(3, "taco")
	if n.Name() != "taco" || n.Data() != 3 || n.Parent() != nil || n.Len() != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("NewNodeWithDataAndName should set name and data, not %#v", n)
	}
}

func TestNameAndData(t *testing.T) {
	n := node.NewNodeWithNameAndData("taco", 1)
	if n.Name() != "taco" || n.Data() != 1 {
		t.Fail()
		t.Logf("NewNodeWithNameAndData should set name and data, not %#v", n)
	}
	n.Name("cat")
	if n.Name() != "cat" || n.Data() != 1 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Name should set name, not %#v", n)
	}
	n.Data(2)
	if n.Name() != "cat" || n.Data() != 2 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Data should set data, not %#v", n)
	}
}

func TestNodeTree1(t *testing.T) {
	n := node.NewNodeWithName("root")
	n.NewKidWithNameAndData("kid1", true)
	k2 := n.NewKidWithName("kid2")
	k2.NewKidWithNameAndData("kid2-sub1", 1)
	k2.NewKidWithNameAndData("kid2-sub2", 2.5)
	k3 := n.NewKidWithName("kid3")
	k3.NewKidWithNameAndData("kid3-sub1", '\u003f') // ?

	if n.Len() != 3 {
		t.Fail()
		t.Logf("Len should return 3, got %d from %#v", n.Len(), n)
	}
	if n.Kid(0).Len() != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid1 should have no children, got %d from %#v", n.Kid(0).Len(), n.Kid(0))
	}
	if n.Kid(1).Len() != 2 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid2 should have 2 children, got %d from %#v", n.Kid(1).Len(), n.Kid(1))
	}
	if n.Kid(2).Len() != 1 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid3 should have 1 child, got %d from %#v", n.Kid(2).Len(), n.Kid(2))
	}

	if n.Kid(0).Data() != true {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid1 should have data value true, got %#v from %#v", n.Kid(0).Data(), n.Kid(0))
	}
	if n.Kid(1).Data() != nil {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid2 should have no data thus nil, got %#v from %#v", n.Kid(1).Data(), n.Kid(1))
	}
	if n.Kid(2).Data() != nil {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid3 should have no data thus nil, got %#v from %#v", n.Kid(2).Data(), n.Kid(2))
	}

	if n.Kid(1).Kid(0).Name() != "kid2-sub1" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("kid2-sub1 has invalid name, got '%s' from %#v", n.Kid(1).Kid(0).Name(), n.Kid(1).Kid(0))
	}
	if n.Kid(2).Kid(0).Name() != "kid3-sub1" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("kid3-sub1 has invalid name, got '%s' from %#v", n.Kid(2).Kid(0).Name(), n.Kid(2).Kid(0))
	}
	if n.Kid(1).Kid(1).Name() != "kid2-sub2" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("kid2-sub2 has invalid name, got '%s' from %#v", n.Kid(1).Kid(1).Name(), n.Kid(1).Kid(1))
	}
}

func TestJSON2NodeA1(t *testing.T) {
	pay := []byte(`
	{
		"test": {
			"kid1": 1,
			"kid2": 2.5,
			"kid3": [
				1,
				2,
				3
			],
			"kid4": [
				{
					"name": "Taco",
					"price": 3.75
				},
				{
					"name": "Soda",
					"price": 1.99
				}
			]
		}
	}
	`)
	n := node.NewNode()
	err := json.Unmarshal(pay, &n)
	if err != nil {
		t.Fail()
		t.Logf("json.Unmarshal: %v", err)
	}
	if n.Name() != "test" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Root node name expected \"test\", but got \"%s\"", n.Name())
	}
	if n.Len() != 4 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Root node should have 4 children, has %d", n.Len())
	}
	if n.KidByName("kid1") == nil {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Root node should have a child of \"kid1\", has %d:", n.Len())
		for _, k := range n.Kids() {
			t.Logf("\"%s\"", k.Name())
		}
	}
	k1 := n.KidByName("kid1")
	k3 := n.KidByName("kid3")
	k4 := n.KidByName("kid4")
	if k1.Data() != 1.0 { // JSON has Number, no Integer, thus Go marshals it into a Float
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid1 node should have data of 1, got %#v", k1.Data())
	}
	if k3.Len() != 3 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid3 node should have 3 children, has %d", k3.Len())
	}
	if k3.KidByName("2").Data() != 3.0 { // JSON has Number, no Integer, thus Go marshals it into a Float
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid3 sub-node \"2\" should have data of 3, got %#v from %#v", k3.KidByName("2").Data(), k3.KidByName("2"))
	}
	if k4.Len() != 2 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Kid4 node should have 2 children, has %d", k4.Len())
	}
	for idx, k := range k4.Kids() {
		if k.Len() != 2 {
			if !t.Failed() {
				t.Fail()
			}
			t.Logf("Kid4 sub-node \"%s\" should have 2 children, has %d", k.Name(), k.Len())
			continue
		}
		if k.KidByName("name") == nil {
			if !t.Failed() {
				t.Fail()
			}
			t.Logf("Kid4 sub-node \"%s\" should have a child of \"name\", has %d:", k.Name(), k.Len())
			for _, k0 := range k.Kids() {
				t.Logf("\"%s\"", k0.Name())
			}
			continue
		}
		if k.KidByName("price") == nil {
			if !t.Failed() {
				t.Fail()
			}
			t.Logf("Kid4 sub-node \"%s\" should have a child of \"price\", has %d:", k.Name(), k.Len())
			for _, k0 := range k.Kids() {
				t.Logf("\"%s\"", k0.Name())
			}
			continue
		}
		switch idx {
		case 0: // name="Taco", price=3.75
			if k.KidByName("name").Data().(string) != "Taco" {
				if !t.Failed() {
					t.Fail()
				}
				t.Logf("Kid4 sub-node \"%s\" failed name check \"Taco\", got \"%s\"", k.Name(), k.KidByName("name").Data().(string))
			}
			if k.KidByName("price").Data() != 3.75 {
				if !t.Failed() {
					t.Fail()
				}
				t.Logf("Kid4 sub-node \"%s\" failed price check 3.75, got %#v", k.Name(), k.KidByName("price").Data())
			}
		case 1: // name="Soda", price=1.99
			if k.KidByName("name").Data().(string) != "Soda" {
				if !t.Failed() {
					t.Fail()
				}
				t.Logf("Kid4 sub-node \"%s\" failed name check \"Soda\", got \"%s\"", k.Name(), k.KidByName("name").Data().(string))
			}
			if k.KidByName("price").Data() != 1.99 {
				if !t.Failed() {
					t.Fail()
				}
				t.Logf("Kid4 sub-node \"%s\" failed price check 1.99, got %#v", k.Name(), k.KidByName("price").Data())
			}
		default:
			if !t.Failed() {
				t.Fail()
			}
			t.Logf("Unexpected sub-node for Kid4 \"%s\"", k.Name())
		}
	}
}

func TestNewNode2(t *testing.T) {
	n, err := node.NewNodeFromJSON([]byte(`{"test": [1, 2, 3]}`))
	if err != nil {
		t.Fail()
		t.Logf("Unexpected Error: %v", err)
	}
	if n.Name() != "test" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Node Name expected \"test\", got \"%s\"", n.Name())
	}
	if n.Len() != 3 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Node Length expected 3, got %d", n.Len())
	}
	n, err = node.NewNodeFromJSON([]byte(`{"test": [1, 2, 3}`))
	if err == nil {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Error expected!")
	}
	if n != nil {
		if !t.Failed() {
			t.Fail()
		}
		pay, err := n.MarshalJSON()
		if err != nil {
			t.Errorf("Node.MarshalJSON: %v", err)
		}
		t.Logf("Node should be nil! %s", pay)
	}
}