Second shot at proper validation.

mocks_test.go

@@ -1,5 +1,11 @@
 package authboss
 
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+)
+
 type mockUser struct {
 	Email    string
 	Password string
@@ -31,3 +37,44 @@ func (m mockClientStore) Get(key string) (string, bool) {
 }
 func (m mockClientStore) Put(key, val string) { m[key] = val }
 func (m mockClientStore) Del(key string)      { delete(m, key) }
+
+func mockRequestContext(postKeyValues ...string) *Context {
+	keyValues := &bytes.Buffer{}
+	for i := 0; i < len(postKeyValues); i += 2 {
+		if i != 0 {
+			keyValues.WriteByte('&')
+		}
+		fmt.Fprintf(keyValues, "%s=%s", postKeyValues[i], postKeyValues[i+1])
+	}
+
+	req, err := http.NewRequest("POST", "http://localhost", keyValues)
+	if err != nil {
+		panic(err.Error())
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+
+	ctx, err := ContextFromRequest(req)
+	if err != nil {
+		panic(err)
+	}
+
+	return ctx
+}
+
+type mockValidator struct {
+	FieldName string
+	Errs      ErrorList
+	Ruleset   []string
+}
+
+func (m mockValidator) Field() string {
+	return m.FieldName
+}
+
+func (m mockValidator) Errors(in string) ErrorList {
+	return m.Errs
+}
+
+func (m mockValidator) Rules() []string {
+	return m.Ruleset
+}

rules.go

@@ -1,18 +1,16 @@
-package validate
+package authboss
 
 import (
 	"errors"
 	"fmt"
 	"regexp"
 	"unicode"
-
-	"gopkg.in/authboss.v0"
 )
 
 // Rules defines a ruleset by which a string can be validated.
 type Rules struct {
-	// Field is the name of the field this is intended to validate.
-	Field string
+	// FieldName is the name of the field this is intended to validate.
+	FieldName string
 	// MatchError describes the MustMatch regexp to a user.
 	MatchError           string
 	MustMatch            *regexp.Regexp
@@ -23,39 +21,44 @@ type Rules struct {
 	AllowWhitespace      bool
 }
 
+// Field names the field this ruleset applies to.
+func (r Rules) Field() string {
+	return r.FieldName
+}
+
 // Errors returns an array of errors for each validation error that
 // is present in the given string. Returns nil if there are no errors.
-func (r Rules) Errors(toValidate string) authboss.ErrorList {
-	errs := make(authboss.ErrorList, 0)
+func (r Rules) Errors(toValidate string) ErrorList {
+	errs := make(ErrorList, 0)
 
 	ln := len(toValidate)
 	if ln == 0 {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New("Cannot be blank")})
+		errs = append(errs, FieldError{r.FieldName, errors.New("Cannot be blank")})
 		return errs
 	}
 
 	if r.MustMatch != nil {
 		if !r.MustMatch.MatchString(toValidate) {
-			errs = append(errs, authboss.FieldError{r.Field, errors.New(r.MatchError)})
+			errs = append(errs, FieldError{r.FieldName, errors.New(r.MatchError)})
 		}
 	}
 
 	if (r.MinLength > 0 && ln < r.MinLength) || (r.MaxLength > 0 && ln > r.MaxLength) {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New(r.lengthErr())})
+		errs = append(errs, FieldError{r.FieldName, errors.New(r.lengthErr())})
 	}
 
 	chars, numeric, symbols, whitespace := tallyCharacters(toValidate)
 	if chars < r.MinLetters {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New(r.charErr())})
+		errs = append(errs, FieldError{r.FieldName, errors.New(r.charErr())})
 	}
 	if numeric < r.MinNumeric {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New(r.numericErr())})
+		errs = append(errs, FieldError{r.FieldName, errors.New(r.numericErr())})
 	}
 	if symbols < r.MinSymbols {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New(r.symbolErr())})
+		errs = append(errs, FieldError{r.FieldName, errors.New(r.symbolErr())})
 	}
 	if !r.AllowWhitespace && whitespace > 0 {
-		errs = append(errs, authboss.FieldError{r.Field, errors.New("No whitespace permitted")})
+		errs = append(errs, FieldError{r.FieldName, errors.New("No whitespace permitted")})
 	}
 
 	if len(errs) == 0 {

rules_test.go

@@ -1,4 +1,4 @@
-package validate
+package authboss
 
 import (
 	"regexp"
@@ -6,53 +6,55 @@ import (
 )
 
 func TestRules_Errors(t *testing.T) {
+	t.Parallel()
+
 	tests := []struct {
 		Rules Rules
 		In    string
 		Error string
 	}{
 		{
-			Rules{Field: "email"},
+			Rules{FieldName: "email"},
 			"",
 			"email: Cannot be blank",
 		},
 		{
-			Rules{Field: "email", MatchError: "Regexp must match!", MustMatch: regexp.MustCompile("abc")},
+			Rules{FieldName: "email", MatchError: "Regexp must match!", MustMatch: regexp.MustCompile("abc")},
 			"hello",
 			"email: Regexp must match!",
 		},
 		{
-			Rules{Field: "email", MinLength: 5},
+			Rules{FieldName: "email", MinLength: 5},
 			"hi",
 			"email: Must be at least 5 characters",
 		},
 		{
-			Rules{Field: "email", MaxLength: 3},
+			Rules{FieldName: "email", MaxLength: 3},
 			"hello",
 			"email: Must be at most 3 characters",
 		},
 		{
-			Rules{Field: "email", MinLength: 3, MaxLength: 5},
+			Rules{FieldName: "email", MinLength: 3, MaxLength: 5},
 			"hi",
 			"email: Must be between 3 and 5 characters",
 		},
 		{
-			Rules{Field: "email", MinLetters: 5},
+			Rules{FieldName: "email", MinLetters: 5},
 			"13345",
 			"email: Must contain at least 5 letters",
 		},
 		{
-			Rules{Field: "email", MinSymbols: 5},
+			Rules{FieldName: "email", MinSymbols: 5},
 			"hi",
 			"email: Must contain at least 5 symbols",
 		},
 		{
-			Rules{Field: "email", MinNumeric: 5},
+			Rules{FieldName: "email", MinNumeric: 5},
 			"hi",
 			"email: Must contain at least 5 numbers",
 		},
 		{
-			Rules{Field: "email"},
+			Rules{FieldName: "email"},
 			"hi whitespace",
 			"email: No whitespace permitted",
 		},
@@ -74,8 +76,10 @@ func TestRules_Errors(t *testing.T) {
 }
 
 func TestRules_Rules(t *testing.T) {
+	t.Parallel()
+
 	r := Rules{
-		Field:           "email",
+		FieldName:       "email",
 		MatchError:      "Must adhere to this regexp",
 		MustMatch:       regexp.MustCompile(""),
 		MinLength:       1,
@@ -104,7 +108,9 @@ func TestRules_Rules(t *testing.T) {
 }
 
 func TestRules_IsValid(t *testing.T) {
-	r := Rules{Field: "email"}
+	t.Parallel()
+
+	r := Rules{FieldName: "email"}
 	if r.IsValid("") {
 		t.Error("It should not be valid.")
 	}
@@ -115,6 +121,8 @@ func TestRules_IsValid(t *testing.T) {
 }
 
 func TestTallyCharacters(t *testing.T) {
+	t.Parallel()
+
 	c, n, s, w := tallyCharacters("123abcDEF@#$%^*   ")
 	if c != 6 {
 		t.Error("Number of chars:", c)

validation.go

@@ -5,6 +5,14 @@ import (
 	"fmt"
 )
 
+// Validator is anything that can validate a string and provide a list of errors
+// and describe its set of rules.
+type Validator interface {
+	Field() string
+	Errors(in string) ErrorList
+	Rules() []string
+}
+
 type ErrorList []error
 
 // Error satisfies the error interface.
@@ -49,9 +57,18 @@ func (f FieldError) Error() string {
 	return fmt.Sprintf("%s: %v", f.Name, f.Err)
 }
 
-// Validator is anything that can validate a string and provide a list of errors
-// and describe its set of rules.
-type Validator interface {
-	Errors(in string) ErrorList
-	Rules() []string
+// Validate validates a request using the given ruleset.
+func (ctx *Context) Validate(ruleset []Validator) ErrorList {
+	errList := make(ErrorList, 0)
+
+	for _, validator := range ruleset {
+		field := validator.Field()
+
+		val, _ := ctx.FirstFormValue(field)
+		if errs := validator.Errors(val); len(errs) > 0 {
+			errList = append(errList, errs...)
+		}
+	}
+
+	return errList
 }

validation_test.go

@@ -60,3 +60,32 @@ func TestErrorList_Map(t *testing.T) {
 		t.Error("Wrong unkown error at 0:", unknownErrs[0])
 	}
 }
+
+func TestValidate(t *testing.T) {
+	t.Parallel()
+
+	ctx := mockRequestContext("username", "john", "email", "john@john.com")
+
+	errList := ctx.Validate([]Validator{
+		mockValidator{
+			FieldName: "username", Errs: ErrorList{FieldError{"username", errors.New("must be longer than 4")}},
+		},
+		mockValidator{
+			FieldName: "missing_field", Errs: ErrorList{FieldError{"missing_field", errors.New("Expected field to exist.")}},
+		},
+		mockValidator{
+			FieldName: "email", Errs: nil,
+		},
+	})
+
+	errs := errList.Map()
+	if errs["username"][0] != "must be longer than 4" {
+		t.Error("Expected a different error for username:", errs["username"][0])
+	}
+	if errs["missing_field"][0] != "Expected field to exist." {
+		t.Error("Expected a different error for missing_field:", errs["missing_field"][0])
+	}
+	if _, ok := errs["email"]; ok {
+		t.Error("Expected no errors for email.")
+	}
+}