move PIN test to the common package

common/pin_test.go

@@ -0,0 +1,56 @@
+package common
+
+import "testing"
+
+func TestIsValidPIN(t *testing.T) {
+	tests := []struct {
+		name     string
+		pin      string
+		expected bool
+	}{
+		{
+			name:     "Valid PIN with 4 digits",
+			pin:      "1234",
+			expected: true,
+		},
+		{
+			name:     "Valid PIN with leading zeros",
+			pin:      "0001",
+			expected: true,
+		},
+		{
+			name:     "Invalid PIN with less than 4 digits",
+			pin:      "123",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with more than 4 digits",
+			pin:      "12345",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with letters",
+			pin:      "abcd",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with special characters",
+			pin:      "12@#",
+			expected: false,
+		},
+		{
+			name:     "Empty PIN",
+			pin:      "",
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := IsValidPIN(tt.pin)
+			if actual != tt.expected {
+				t.Errorf("IsValidPIN(%q) = %v; expected %v", tt.pin, actual, tt.expected)
+			}
+		})
+	}
+}

internal/handlers/ussd/menuhandler_test.go

@@ -1499,59 +1499,6 @@ func TestQuit(t *testing.T) {
 	}
 }
 
-func TestIsValidPIN(t *testing.T) {
-	tests := []struct {
-		name     string
-		pin      string
-		expected bool
-	}{
-		{
-			name:     "Valid PIN with 4 digits",
-			pin:      "1234",
-			expected: true,
-		},
-		{
-			name:     "Valid PIN with leading zeros",
-			pin:      "0001",
-			expected: true,
-		},
-		{
-			name:     "Invalid PIN with less than 4 digits",
-			pin:      "123",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with more than 4 digits",
-			pin:      "12345",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with letters",
-			pin:      "abcd",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with special characters",
-			pin:      "12@#",
-			expected: false,
-		},
-		{
-			name:     "Empty PIN",
-			pin:      "",
-			expected: false,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			actual := common.IsValidPIN(tt.pin)
-			if actual != tt.expected {
-				t.Errorf("IsValidPIN(%q) = %v; expected %v", tt.pin, actual, tt.expected)
-			}
-		})
-	}
-}
-
 func TestValidateAmount(t *testing.T) {
 	fm, err := NewFlagManager(flagsPath)
 	if err != nil {