test.go

package main

import (
	"encoding/json"
	"fmt"
	"github.com/robfig/revel"
	"github.com/robfig/revel/harness"
	"github.com/robfig/revel/modules/testrunner/app/controllers"
	"io/ioutil"
	"net/http"
	"os"
	"path"
	"strings"
	"time"
)

var cmdTest = &Command{
	UsageLine: "test [import path] [run mode]",
	Short:     "run all tests from the command-line",
	Long: `
Run all tests for the Revel app named by the given import path.

For example, to run the booking sample application's tests:

    revel test github.com/robfig/revel/samples/booking dev

The run mode is used to select which set of app.conf configuration should
apply and may be used to determine logic in the application itself.

Run mode defaults to "dev".`,
}

func init() {
	cmdTest.Run = testApp
}

func testApp(args []string) {
	var err error
	if len(args) == 0 {
		errorf("No import path given.\nRun 'revel help test' for usage.\n")
	}

	mode := "dev"
	if len(args) == 2 {
		mode = args[1]
	}

	// Find and parse app.conf
	revel.Init(mode, args[0], "")

	// Ensure that the testrunner is loaded in this mode.
	testRunnerFound := false
	for _, module := range revel.Modules {
		if module.ImportPath == "github.com/robfig/revel/modules/testrunner" {
			testRunnerFound = true
			break
		}
	}
	if !testRunnerFound {
		errorf(`Error: The testrunner module is not running.

You can add it to a run mode configuration with the following line: 

	module.testrunner = github.com/robfig/revel/modules/testrunner

`)
	}

	// Create a directory to hold the test result files.
	resultPath := path.Join(revel.BasePath, "test-results")
	if err = os.RemoveAll(resultPath); err != nil {
		errorf("Failed to remove test result directory %s: %s", resultPath, err)
	}
	if err = os.Mkdir(resultPath, 0777); err != nil {
		errorf("Failed to create test result directory %s: %s", resultPath, err)
	}

	// Direct all the output into a file in the test-results directory.
	file, err := os.OpenFile(path.Join(resultPath, "app.log"), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
	if err != nil {
		errorf("Failed to create log file: %s", err)
	}

	app, reverr := harness.Build()
	if reverr != nil {
		errorf("Error building: %s", reverr)
	}
	cmd := app.Cmd()
	cmd.Stderr = file
	cmd.Stdout = file

	// Start the app...
	cmd.Start()
	defer cmd.Kill()
	revel.INFO.Printf("Testing %s (%s) in %s mode\n", revel.AppName, revel.ImportPath, mode)

	// Get a list of tests.
	var testSuites []controllers.TestSuiteDesc
	baseUrl := fmt.Sprintf("http://127.0.0.1:%d", revel.HttpPort)
	resp, err := http.Get(baseUrl + "/@tests.list")
	if err != nil {
		errorf("Failed to request test list: %s", err)
	}
	defer resp.Body.Close()
	json.NewDecoder(resp.Body).Decode(&testSuites)

	fmt.Printf("\n%d test suite%s to run.\n", len(testSuites), pluralize(len(testSuites), "", "s"))
	fmt.Println()

	// Load the result template, which we execute for each suite.
	TemplateLoader := revel.NewTemplateLoader(revel.TemplatePaths)
	if err := TemplateLoader.Refresh(); err != nil {
		errorf("Failed to compile templates: %s", err)
	}
	resultTemplate, err := TemplateLoader.Template("TestRunner/SuiteResult.html")
	if err != nil {
		errorf("Failed to load suite result template: %s", err)
	}

	// Run each suite.
	overallSuccess := true
	for _, suite := range testSuites {
		// Print the name of the suite we're running.
		name := suite.Name
		if len(name) > 22 {
			name = name[:19] + "..."
		}
		fmt.Printf("%-22s", name)

		// Run every test.
		startTime := time.Now()
		suiteResult := controllers.TestSuiteResult{Name: suite.Name, Passed: true}
		for _, test := range suite.Tests {
			testUrl := baseUrl + "/@tests/" + suite.Name + "/" + test.Name
			resp, err := http.Get(testUrl)
			if err != nil {
				errorf("Failed to fetch test result at url %s: %s", testUrl, err)
			}
			defer resp.Body.Close()

			var testResult controllers.TestResult
			json.NewDecoder(resp.Body).Decode(&testResult)
			if !testResult.Passed {
				suiteResult.Passed = false
			}
			suiteResult.Results = append(suiteResult.Results, testResult)
		}
		overallSuccess = overallSuccess && suiteResult.Passed

		// Print result.  (Just PASSED or FAILED, and the time taken)
		suiteResultStr, suiteAlert := "PASSED", ""
		if !suiteResult.Passed {
			suiteResultStr, suiteAlert = "FAILED", "!"
		}
		fmt.Printf("%8s%3s%6ds\n", suiteResultStr, suiteAlert, int(time.Since(startTime).Seconds()))

		// Create the result HTML file.
		suiteResultFilename := path.Join(resultPath,
			fmt.Sprintf("%s.%s.html", suite.Name, strings.ToLower(suiteResultStr)))
		suiteResultFile, err := os.Create(suiteResultFilename)
		if err != nil {
			errorf("Failed to create result file %s: %s", suiteResultFilename, err)
		}
		if err = resultTemplate.Render(suiteResultFile, suiteResult); err != nil {
			errorf("Failed to render result template: %s", err)
		}
	}

	fmt.Println()
	if overallSuccess {
		writeResultFile(resultPath, "result.passed", "passed")
		fmt.Println("All Tests Passed.")
	} else {
		writeResultFile(resultPath, "result.failed", "failed")
		errorf("Some tests failed.  See file://%s for results.", resultPath)
	}
}

func writeResultFile(resultPath, name, content string) {
	if err := ioutil.WriteFile(path.Join(resultPath, name), []byte(content), 0666); err != nil {
		errorf("Failed to write result file %s: %s", path.Join(resultPath, name), err)
	}
}

func pluralize(num int, singular, plural string) string {
	if num == 1 {
		return singular
	}
	return plural
}