fix (config) : Display message when user tries to set okd preset on arm (#3389)

Add additional handling in validatePreset method for failing the
validation when `okd` preset is provided on arm architecture. Validation
would fail with message directing user to use other preset values.

Signed-off-by: Rohan Kumar <[email protected]>

Author: rohanKanojia

pkg/crc/config/validations.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"fmt"
+	"runtime"
 	"strings"
 
 	"github.com/crc-org/crc/v2/pkg/crc/constants"
@@ -134,11 +135,18 @@ func validateYesNo(value interface{}) (bool, string) {
 	return false, "must be yes or no"
 }
 
+// validatePreset checks if given Preset is valid for CRC cluster creation
+// There is an additional check to throw unsupported operation exception in
+// case of using 'okd' preset value on top of ARM architecture.
 func validatePreset(value interface{}) (bool, string) {
-	_, err := crcpreset.ParsePresetE(cast.ToString(value))
+	parsedPreset, err := crcpreset.ParsePresetE(cast.ToString(value))
 	if err != nil {
 		return false, fmt.Sprintf("Unknown preset. Only %s are valid.", crcpreset.AllPresets())
 	}
+	arch := runtime.GOARCH
+	if parsedPreset == crcpreset.OKD && (arch == "arm" || arch == "arm64") {
+		return false, fmt.Sprintf("preset '%s' is not supported on %s architecture, please use different preset value", parsedPreset, runtime.GOARCH)
+	}
 	return true, ""
 }
 

pkg/crc/config/validations_test.go

@@ -0,0 +1,55 @@
+package config
+
+import (
+	"fmt"
+	"runtime"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidatePresetWithVariousPresetValues(t *testing.T) {
+	tests := []struct {
+		presetValue       string
+		validationPassed  bool
+		validationMessage string
+	}{
+		{"openshift", true, ""},
+		{"microshift", true, ""},
+		{"unknown", false, "Unknown preset"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.presetValue, func(t *testing.T) {
+			// When
+			validationPass, validationMessage := validatePreset(tt.presetValue)
+
+			// Then
+			assert.Equal(t, tt.validationPassed, validationPass)
+			assert.Contains(t, validationMessage, tt.validationMessage)
+		})
+	}
+}
+
+func TestValidationPreset_WhenOKDProvidedOnNonArmArchitecture_thenValidationSuccessful(t *testing.T) {
+	// Given
+	if runtime.GOARCH == "arm" || runtime.GOARCH == "arm64" {
+		t.Skip("Skipping test; running on ARM architecture")
+	}
+	// When
+	validationPass, validationMessage := validatePreset("okd")
+	// Then
+	assert.Equal(t, true, validationPass)
+	assert.Equal(t, "", validationMessage)
+}
+
+func TestValidationPreset_WhenOKDProvidedOnArmArchitecture_thenValidationFailure(t *testing.T) {
+	// Given
+	if runtime.GOARCH != "arm" && runtime.GOARCH != "arm64" {
+		t.Skip("Skipping test; not running on ARM architecture")
+	}
+	// When
+	validationPass, validationMessage := validatePreset("okd")
+	// Then
+	assert.Equal(t, false, validationPass)
+	assert.Equal(t, fmt.Sprintf("preset 'okd' is not supported on %s architecture, please use different preset value", runtime.GOARCH), validationMessage)
+}