diff --git a/path_test.go b/path_test.go
index 076066a4..48dec823 100644
--- a/path_test.go
+++ b/path_test.go
@@ -5,6 +5,7 @@
 package fiber
 
 import (
+	"regexp"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -265,3 +266,212 @@ func Benchmark_RoutePatternMatch(t *testing.B) {
 		benchCaseFn(testCollection)
 	}
 }
+
+func TestConstraint_CheckConstraint(t *testing.T) {
+	t.Parallel()
+
+	testCases := []struct {
+		name           string
+		constraint     *Constraint
+		param          string
+		expectedResult bool
+	}{
+		{
+			name:           "no constraint",
+			constraint:     &Constraint{ID: noConstraint},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "int constraint valid",
+			constraint:     &Constraint{ID: intConstraint},
+			param:          "123",
+			expectedResult: true,
+		},
+		{
+			name:           "int constraint invalid",
+			constraint:     &Constraint{ID: intConstraint},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "bool constraint valid",
+			constraint:     &Constraint{ID: boolConstraint},
+			param:          "true",
+			expectedResult: true,
+		},
+		{
+			name:           "bool constraint invalid",
+			constraint:     &Constraint{ID: boolConstraint},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "float constraint valid",
+			constraint:     &Constraint{ID: floatConstraint},
+			param:          "1.23",
+			expectedResult: true,
+		},
+		{
+			name:           "float constraint invalid",
+			constraint:     &Constraint{ID: floatConstraint},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "alpha constraint valid",
+			constraint:     &Constraint{ID: alphaConstraint},
+			param:          "abc",
+			expectedResult: true,
+		},
+		{
+			name:           "alpha constraint invalid",
+			constraint:     &Constraint{ID: alphaConstraint},
+			param:          "123",
+			expectedResult: false,
+		},
+		{
+			name:           "guid constraint valid",
+			constraint:     &Constraint{ID: guidConstraint},
+			param:          "123e4567-e89b-12d3-a456-426614174000",
+			expectedResult: true,
+		},
+		{
+			name:           "guid constraint invalid",
+			constraint:     &Constraint{ID: guidConstraint},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "min length constraint valid",
+			constraint:     &Constraint{ID: minLenConstraint, Data: []string{"3"}},
+			param:          "abc",
+			expectedResult: true,
+		},
+		{
+			name:           "min length constraint invalid",
+			constraint:     &Constraint{ID: minLenConstraint, Data: []string{"5"}},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "max length constraint valid",
+			constraint:     &Constraint{ID: maxLenConstraint, Data: []string{"5"}},
+			param:          "abc",
+			expectedResult: true,
+		},
+		{
+			name:           "max length constraint invalid",
+			constraint:     &Constraint{ID: maxLenConstraint, Data: []string{"2"}},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "length constraint valid",
+			constraint:     &Constraint{ID: lenConstraint, Data: []string{"3"}},
+			param:          "abc",
+			expectedResult: true,
+		},
+		{
+			name:           "length constraint invalid",
+			constraint:     &Constraint{ID: lenConstraint, Data: []string{"5"}},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "between length constraint valid",
+			constraint:     &Constraint{ID: betweenLenConstraint, Data: []string{"2", "4"}},
+			param:          "abc",
+			expectedResult: true,
+		},
+		{
+			name:           "between length constraint invalid",
+			constraint:     &Constraint{ID: betweenLenConstraint, Data: []string{"4", "6"}},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "min constraint valid",
+			constraint:     &Constraint{ID: minConstraint, Data: []string{"2"}},
+			param:          "3",
+			expectedResult: true,
+		},
+		{
+			name:           "min constraint invalid",
+			constraint:     &Constraint{ID: minConstraint, Data: []string{"4"}},
+			param:          "3",
+			expectedResult: false,
+		},
+		{
+			name:           "max constraint valid",
+			constraint:     &Constraint{ID: maxConstraint, Data: []string{"4"}},
+			param:          "3",
+			expectedResult: true,
+		},
+		{
+			name:           "max constraint invalid",
+			constraint:     &Constraint{ID: maxConstraint, Data: []string{"2"}},
+			param:          "3",
+			expectedResult: false,
+		},
+		{
+			name:           "range constraint valid",
+			constraint:     &Constraint{ID: rangeConstraint, Data: []string{"2", "4"}},
+			param:          "3",
+			expectedResult: true,
+		},
+		{
+			name:           "range constraint invalid",
+			constraint:     &Constraint{ID: rangeConstraint, Data: []string{"4", "6"}},
+			param:          "3",
+			expectedResult: false,
+		},
+		{
+			name:           "datetime constraint valid",
+			constraint:     &Constraint{ID: datetimeConstraint, Data: []string{"2006-01-02"}},
+			param:          "2023-05-20",
+			expectedResult: true,
+		},
+		{
+			name:           "datetime constraint invalid",
+			constraint:     &Constraint{ID: datetimeConstraint, Data: []string{"2006-01-02"}},
+			param:          "2023/05/20",
+			expectedResult: false,
+		},
+		{
+			name:           "regex constraint valid",
+			constraint:     &Constraint{ID: regexConstraint, Data: []string{`^\d+$`}, RegexCompiler: regexp.MustCompile(`^\d+$`)},
+			param:          "123",
+			expectedResult: true,
+		},
+		{
+			name:           "regex constraint invalid",
+			constraint:     &Constraint{ID: regexConstraint, RegexCompiler: regexp.MustCompile(`^\d+$`)},
+			param:          "abc",
+			expectedResult: false,
+		},
+		{
+			name:           "custom constraint valid",
+			constraint:     &Constraint{Name: "custom", customConstraints: []CustomConstraint{&mockCustomConstraint{}}},
+			param:          "abc",
+			expectedResult: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			result := tc.constraint.CheckConstraint(tc.param)
+			require.Equal(t, tc.expectedResult, result)
+		})
+	}
+}
+
+type mockCustomConstraint struct{}
+
+func (m *mockCustomConstraint) Name() string {
+	return "custom"
+}
+
+func (m *mockCustomConstraint) Execute(_ string, _ ...string) bool {
+	return true
+}