package cnf

import (
	"bytes"
	"testing"
)

func TestSimpleJson(t *testing.T) {

	tests := []struct {
		raw string
		key string
	}{
		{`{ "key": "value" }`, "key"},
		{`{ "ignore": "xxx", "key": "value" }`, "key"},
		{`{ "parent": { "child": "value" } }`, "parent.child"},
		{`{ "ignore": "xxx", "parent": { "child": "value" } }`, "parent.child"},
	}

	for _, test := range tests {

		parser := new(Json)
		reader := bytes.NewBufferString(test.raw)

		// try to extract value
		err := parser.Parse(reader)
		if err != nil {
			t.Errorf("parse error: %s", err)
			continue
		}

		// extract value
		value, found := parser.Get(test.key)
		if !found {
			t.Errorf("expected a result, got none")
			continue
		}

		// check value
		if value != "value" {
			t.Errorf("expected 'value' got '%s'", value)
		}

	}

}

func TestNotString(t *testing.T) {

	tests := []struct {
		raw string
		key string
	}{
		{`{ "key": ["value"] }`, "key"},
		{`{ "key": {"subkey": "value"} }`, "key"},
		{`{ "parent": { "child": [ "value" ] } }`, "parent.child"},
		{`{ "parent": { "child": { "subkey": "value" } } }`, "parent.child"},
	}

	for _, test := range tests {

		parser := new(Json)
		reader := bytes.NewBufferString(test.raw)

		// try to extract value
		err := parser.Parse(reader)
		if err != nil {
			t.Errorf("parse error: %s", err)
			continue
		}

		// extract value
		value, found := parser.Get(test.key)
		if found || len(value) > 0 {
			t.Errorf("expected no result, got '%s'", value)
			continue
		}

	}

}