Test Validate func

app/module_validator.go

@@ -5,11 +5,17 @@ import (
 	"os"
 
 	"github.com/logrusorgru/aurora"
+	"github.com/wtfutil/wtf/cfg"
 	"github.com/wtfutil/wtf/wtf"
 )
 
 type ModuleValidator struct{}
 
+type widgetError struct {
+	name             string
+	validationErrors []cfg.Validatable
+}
+
 func NewModuleValidator() *ModuleValidator {
 	return &ModuleValidator{}
 }
@@ -17,42 +23,57 @@ func NewModuleValidator() *ModuleValidator {
 // Validate rolls through all the enabled widgets and looks for configuration errors.
 // If it finds any it stringifies them, writes them to the console, and kills the app gracefully
 func (val *ModuleValidator) Validate(widgets []wtf.Wtfable) {
-	var errStr string
-	hasErrors := false
+	validationErrors := validate(widgets)
 
+	if len(validationErrors) > 0 {
+		fmt.Println()
+		for _, error := range validationErrors {
+			for _, message := range error.errorMessages() {
+				fmt.Println(message)
+			}
+		}
+		fmt.Println()
+
+		os.Exit(1)
+	}
+}
+
+func validate(widgets []wtf.Wtfable) (widgetErrors []widgetError) {
 	for _, widget := range widgets {
-		var widgetErrStr string
+		error := widgetError{name: widget.Name()}
 
 		for _, val := range widget.CommonSettings().Validations() {
 			if val.HasError() {
-				hasErrors = true
-				widgetErrStr += fmt.Sprintf(" - %s\t%s %v\n", val, aurora.Red("Error:"), val.Error())
+				error.validationErrors = append(error.validationErrors, val)
 			}
 		}
 
-		if widgetErrStr != "" {
-			errStr += fmt.Sprintf(
-				"%s\n",
-				fmt.Sprintf(
+		if len(error.validationErrors) > 0 {
+			widgetErrors = append(widgetErrors, error)
+		}
+	}
+
+	return widgetErrors
+}
+
+func (err widgetError) errorMessages() (messages []string) {
+	widgetMessage := fmt.Sprintf(
 		"%s in %s configuration",
 		aurora.Red("Errors"),
 		aurora.Yellow(
 			fmt.Sprintf(
 				"%s.position",
-							widget.Name(),
-						),
+				err.name,
 			),
 		),
 	)
+	messages = append(messages, widgetMessage)
 
-			errStr += widgetErrStr + "\n"
-		}
+	for _, e := range err.validationErrors {
+		configMessage := fmt.Sprintf(" - %s\t%s %v", e.String(), aurora.Red("Error:"), e.Error())
+
+		messages = append(messages, configMessage)
 	}
 
-	if hasErrors {
-		fmt.Println()
-		fmt.Println(errStr)
-
-		os.Exit(1)
-	}
+	return messages
 }

app/module_validator_test.go

@@ -1,11 +1,102 @@
 package app
 
 import (
+	"fmt"
 	"testing"
 
+	"github.com/logrusorgru/aurora"
+	"github.com/olebedev/config"
 	"github.com/stretchr/testify/assert"
+	"github.com/wtfutil/wtf/wtf"
+)
+
+const (
+	valid = `
+wtf:
+  mods:
+    clocks:
+      enabled: true
+      position:
+        top: 0
+        left: 0
+        height: 1
+        width: 1
+      refreshInterval: 30`
+
+	invalid = `
+wtf:
+  mods:
+    clocks:
+      enabled: true
+      position:
+        top: abc
+        left: 0
+        height: 1
+        width: 1
+      refreshInterval: 30`
 )
 
 func Test_NewModuleValidator(t *testing.T) {
 	assert.IsType(t, &ModuleValidator{}, NewModuleValidator())
 }
+
+func Test_validate(t *testing.T) {
+	tests := []struct {
+		name       string
+		moduleName string
+		config     *config.Config
+		expected   []string
+	}{
+		{
+			name:       "valid config",
+			moduleName: "clocks",
+			config: func() *config.Config {
+				cfg, _ := config.ParseYaml(valid)
+				return cfg
+			}(),
+			expected: []string{},
+		},
+		{
+			name:       "invalid config",
+			moduleName: "clocks",
+			config: func() *config.Config {
+				cfg, _ := config.ParseYaml(invalid)
+				return cfg
+			}(),
+			expected: []string{
+				fmt.Sprintf("%s in %s configuration", aurora.Red("Errors"), aurora.Yellow("clocks.position")),
+				fmt.Sprintf(
+					" - Invalid value for %s:	0	%s strconv.ParseInt: parsing \"abc\": invalid syntax",
+					aurora.Yellow("top"),
+					aurora.Red("Error:"),
+				),
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			widget := MakeWidget(nil, nil, tt.moduleName, tt.config)
+
+			if widget == nil {
+				t.Logf("Failed to create widget %s", tt.moduleName)
+				t.FailNow()
+			}
+
+			errs := validate([]wtf.Wtfable{widget})
+
+			if len(tt.expected) == 0 {
+				assert.Empty(t, errs)
+			} else {
+				assert.NotEmpty(t, errs)
+
+				var actual []string
+				for _, err := range errs {
+					actual = append(actual, err.errorMessages()...)
+				}
+
+				assert.Equal(t, tt.expected, actual)
+			}
+		})
+	}
+}