Add run script

.gitignore

@@ -0,0 +1,3 @@
+**/c.out
+**/c.html
+bookings

internal/forms/forms.go

@@ -2,7 +2,6 @@ package forms
 
 import (
 	"fmt"
-	"net/http"
 	"net/url"
 	"strings"
 
@@ -25,18 +24,18 @@ func New(data url.Values) *Form {
 
 // Required checks required fields
 func (f *Form) Required(fields ...string) {
-    for _, field := range fields {
-        value := f.Get(field)
-        if strings.TrimSpace(value) == "" {
-            f.Errors.Add(field, "This field cannot be blank")
-        }
-    }
+	for _, field := range fields {
+		value := f.Get(field)
+		if strings.TrimSpace(value) == "" {
+			f.Errors.Add(field, "This field cannot be blank")
+		}
+	}
 }
 
 // Has checks if form field is in post and not emtpy
-func (f *Form) Has(field string, r *http.Request) bool {
-	x := r.Form.Get(field)
-    return x != ""
+func (f *Form) Has(field string) bool {
+	x := f.Get(field)
+	return x != ""
 }
 
 // Valid returns true if there are no errors, otherwise false
@@ -45,19 +44,19 @@ func (f *Form) Valid() bool {
 }
 
 // MinLength checks for string minimum length
-func (f *Form) MinLength(field string, length int, r *http.Request) bool {
-    value := r.Form.Get(field)
-    if len(value) < length {
-        f.Errors.Add(field, fmt.Sprintf("This field must have at least %d letters", length))
-        return false
-    }
-    return true
+func (f *Form) MinLength(field string, length int) bool {
+	value := f.Get(field)
+	if len(value) < length {
+		f.Errors.Add(field, fmt.Sprintf("This field must have at least %d letters", length))
+		return false
+	}
+	return true
 }
 
 // IsEmail checks the email address
-func (f *Form) IsEmail(field string, r *http.Request) {
-    value := r.Form.Get(field)
-    if !govalidator.IsEmail(value) {
-        f.Errors.Add(field, "Invalid email address")
-    }
+func (f *Form) IsEmail(field string) {
+	value := f.Get(field)
+	if !govalidator.IsEmail(value) {
+		f.Errors.Add(field, "Invalid email address")
+	}
 }

internal/forms/forms_test.go

@@ -0,0 +1,131 @@
+package forms
+
+import (
+	"net/http/httptest"
+	"net/url"
+	"testing"
+)
+
+func TestForms_Valid(t *testing.T) {
+	r := httptest.NewRequest("POST", "/test-url", nil)
+	form := New(r.PostForm)
+
+	isValid := form.Valid()
+	if !isValid {
+		t.Error("got invalid when should have been valid")
+	}
+}
+
+func TestForms_Required(t *testing.T) {
+	r := httptest.NewRequest("POST", "/test-url", nil)
+	form := New(r.PostForm)
+
+	form.Required("a", "b", "c")
+	if form.Valid() {
+		t.Error("required fields are not given, should be invalid")
+	}
+
+	postData := url.Values{}
+
+	postData.Add("a", "a")
+	postData.Add("b", "a")
+	postData.Add("c", "a")
+
+	r = httptest.NewRequest("POST", "/test-url", nil)
+	r.PostForm = postData
+
+	form = New(r.PostForm)
+
+	form.Required("a", "b", "c")
+	if !form.Valid() {
+		t.Error("required fields are given, should be valid")
+	}
+}
+
+func TestForms_Has(t *testing.T) {
+	postData := url.Values{}
+	form := New(postData)
+
+	if form.Has("a") {
+		t.Error("the field should not exist")
+	}
+
+	postData = url.Values{}
+	postData.Add("a", "a")
+	form = New(postData)
+
+	if !form.Has("a") {
+		t.Error("the field should exist")
+	}
+}
+
+func TestForms_MinLength(t *testing.T) {
+	postData := url.Values{}
+	form := New(postData)
+
+	if form.MinLength("a", 3) {
+		t.Error("the field should not exist")
+	}
+
+	errMsg := form.Errors.Get("a")
+	if errMsg != "This field must have at least 3 letters" {
+		t.Error("should have an errMsg")
+	}
+
+	if form.Valid() {
+		t.Error("should be invalid")
+	}
+
+	postData = url.Values{}
+	postData.Add("a", "ab")
+	postData.Add("b", "abc")
+	form = New(postData)
+
+	if form.MinLength("a", 3) {
+		t.Error("the field is shorter than 3 chars")
+	}
+
+	if !form.MinLength("b", 3) {
+		t.Error("the field is equal to 3 chars")
+	}
+
+	if form.Valid() {
+		t.Error("should be invalid")
+	}
+}
+
+func TestForms_IsEmail(t *testing.T) {
+	postData := url.Values{}
+	form := New(postData)
+
+	form.IsEmail("a")
+
+	if form.Valid() {
+		t.Error("email should not exit")
+	}
+
+	postData = url.Values{}
+	postData.Add("a", "a@a.com")
+	form = New(postData)
+
+	form.IsEmail("a")
+
+	errMsg := form.Errors.Get("a")
+	if errMsg != "" {
+		t.Error("should not have an errMsg")
+	}
+
+	if !form.Valid() {
+		t.Error("should be a valid email")
+	}
+
+	postData = url.Values{}
+	postData.Add("a", "a@.com")
+	form = New(postData)
+
+	form.IsEmail("a")
+
+	if form.Valid() {
+		t.Error("Should not be a valid email")
+	}
+}

internal/handlers/handlers.go

@@ -100,8 +100,8 @@ func (m *Repository) PostMakeReservation(w http.ResponseWriter, r *http.Request)
 	form := forms.New(r.PostForm)
 
 	form.Required("first_name", "last_name", "email")
-	form.MinLength("first_name", 2, r)
-	form.IsEmail("email", r)
+	form.MinLength("first_name", 2)
+	form.IsEmail("email")
 
 	if !form.Valid() {
 		data := make(map[string]interface{})

internal/render/render.go

@@ -2,6 +2,7 @@ package render
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"go-udemy-web-1/internal/config"
 	"go-udemy-web-1/internal/models"
@@ -35,7 +36,7 @@ func AddDefaultData(td *models.TemplateData, r *http.Request) *models.TemplateDa
 }
 
 // RenderTemplate renders a HTML template file
-func RenderTemplate(w http.ResponseWriter, r *http.Request, tmpl string, td *models.TemplateData) {
+func RenderTemplate(w http.ResponseWriter, r *http.Request, tmpl string, td *models.TemplateData) error {
 	var tc map[string]*template.Template
 	if app.UseCache {
 		// get the template cache from the app config
@@ -47,7 +48,7 @@ func RenderTemplate(w http.ResponseWriter, r *http.Request, tmpl string, td *mod
 	// get requested template from cache
 	t, ok := tc[tmpl]
 	if !ok {
-		log.Fatal("Could not get template from template cache")
+		return errors.New("could not get template from template cache")
 	}
 
 	// Write to a buffer to make sure that the template can be read and
@@ -59,13 +60,17 @@ func RenderTemplate(w http.ResponseWriter, r *http.Request, tmpl string, td *mod
 	err := t.Execute(buf, td)
 	if err != nil {
 		log.Println(err)
+		return err
 	}
 
 	// render the template
 	_, err = buf.WriteTo(w)
 	if err != nil {
 		log.Println(err)
+		return err
 	}
+
+	return nil
 }
 
 func CreateTemplateCache() (map[string]*template.Template, error) {

internal/render/render_test.go

@@ -0,0 +1,76 @@
+package render
+
+import (
+	"go-udemy-web-1/internal/models"
+	"net/http"
+	"testing"
+)
+
+func TestAddDefaultData(t *testing.T) {
+	var td models.TemplateData
+
+	r, err := getSession()
+	if err != nil {
+		t.Error(err)
+	}
+
+	session.Put(r.Context(), "flash", "123")
+
+	result := AddDefaultData(&td, r)
+
+	if result.Flash != "123" {
+		t.Error("flash value of 123 not found in session")
+	}
+}
+
+func TestRenderTemplate(t *testing.T) {
+	pathToTemplates = "../../templates"
+	tc, err := CreateTemplateCache()
+	if err != nil {
+		t.Error(err)
+	}
+
+	app.TemplateCahce = tc
+
+	r, err := getSession()
+	if err != nil {
+		t.Error(err)
+	}
+
+	var ww myWriter
+
+	err = RenderTemplate(&ww, r, "home.page.tmpl", &models.TemplateData{})
+	if err != nil {
+		t.Error("error writiing template to browser")
+	}
+
+	err = RenderTemplate(&ww, r, "non-existent.page.html", &models.TemplateData{})
+	if err == nil {
+		t.Error("rendered template that doesn't exist")
+	}
+}
+
+func getSession() (*http.Request, error) {
+	r, err := http.NewRequest("GET", "/some-url", nil)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx := r.Context()
+	ctx, _ = session.Load(ctx, r.Header.Get("X-Session"))
+	r = r.WithContext(ctx)
+
+	return r, nil
+}
+
+func TestNewTemplate(t *testing.T) {
+	NewTemplates(app)
+}
+
+func TestCreateTemplateCache(t *testing.T) {
+	pathToTemplates = "../../templates"
+	_, err := CreateTemplateCache()
+	if err != nil {
+		t.Error(err)
+	}
+}

internal/render/setup_test.go

@@ -0,0 +1,52 @@
+package render
+
+import (
+	"encoding/gob"
+	"go-udemy-web-1/internal/config"
+	"go-udemy-web-1/internal/models"
+	"net/http"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/alexedwards/scs/v2"
+)
+
+var (
+	session *scs.SessionManager
+	testApp config.AppConfig
+)
+
+func TestMain(m *testing.M) {
+	// what am I going to put in the session
+	gob.Register(models.Reservation{})
+
+	// change this to true when in production
+	testApp.InProduction = false
+
+	session = scs.New()
+	session.Lifetime = 24 * time.Hour
+	session.Cookie.Persist = true
+	session.Cookie.SameSite = http.SameSiteLaxMode
+	session.Cookie.Secure = testApp.InProduction
+
+	testApp.Session = session
+
+	app = &testApp
+
+	os.Exit(m.Run())
+}
+
+type myWriter struct{}
+
+func (tw *myWriter) Header() http.Header {
+	var h http.Header
+	return h
+}
+
+func (tw *myWriter) WriteHeader(i int) {}
+
+func (tw *myWriter) Write(b []byte) (int, error) {
+	length := len(b)
+	return length, nil
+}

run.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+go build -o bookings cmd/web/*go && ./bookings