status_test.go

package goserv

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
)

// TestData is the test data structure for the following tests
type TestData struct {
	Integer int
	String  string
}

// expected holds the expected results
var expected = TestData{10, "OK"}

// testResultOfStatus is a shared function for all the status handlers
func testResultsOfStatus(t *testing.T, w *httptest.ResponseRecorder) {
	result := Status{}
	json.Unmarshal(w.Body.Bytes(), &result)
	data := result.Data.(map[string]interface{})
	now := time.Now()
	if result.Time.After(now) {
		t.Fatalf("StructHandler returned a time in the future: %+v > %+v", result.Time, now)
	}
	// Note the use of float64 caseting since the an interface to integer.
	if data["Integer"] != float64(expected.Integer) {
		t.Fatalf("StructHandler returned the wrong data for Integer: %+v != %+v", data["Integer"], expected.Integer)
	}
	if data["String"] != expected.String {
		t.Fatalf("StructHandler returned the wrong data for String: %+v != %+v", data["String"], expected.String)
	}
}

// TestStructHandler tests the StructHandler
func TestStructHandler(t *testing.T) {

	request, _ := http.NewRequest("GET", "http://127.0.0.1/status/", nil)

	for _, pretty := range []bool{false, true} {
		w := httptest.NewRecorder()
		handler := StructHandler(expected, pretty)
		handler(w, request)
		testResultsOfStatus(t, w)
	}
}

// TestFuncHandler tests the FuncHandler (which really just passes to StructHandler)
func TestFuncHandler(t *testing.T) {
	request, _ := http.NewRequest("GET", "http://127.0.0.1/status/", nil)
	expected := TestData{10, "OK"}

	function := func() interface{} {
		return expected
	}

	for _, pretty := range []bool{false, true} {
		w := httptest.NewRecorder()
		handler := FuncHandler(function, pretty)
		handler(w, request)
		testResultsOfStatus(t, w)

	}
}