fix: resolved comments and rebased

pkg/plugin/definition/schemaValidator.go

@@ -0,0 +1,16 @@
+package definition
+
+import (
+	"context"
+	"net/url"
+)
+
+// SchemaValidator interface for schema validation.
+type SchemaValidator interface {
+	Validate(ctx context.Context, url *url.URL, payload []byte) error
+}
+
+// SchemaValidatorProvider interface for creating validators.
+type SchemaValidatorProvider interface {
+	New(ctx context.Context, config map[string]string) (SchemaValidator, func() error, error)
+}

pkg/plugin/implementation/requestPreProcessor/cmd/plugin_test.go

@@ -25,7 +25,7 @@ func TestProviderNew(t *testing.T) {
 			expectedError:  true,
 			expectedStatus: http.StatusOK,
 			prepareRequest: func(req *http.Request) {
-				// Add minimal required headers
+				// Add minimal required headers.
 				req.Header.Set("context", "test-context")
 				req.Header.Set("transaction_id", "test-transaction")
 			},
@@ -38,7 +38,7 @@ func TestProviderNew(t *testing.T) {
 			expectedError:  false,
 			expectedStatus: http.StatusOK,
 			prepareRequest: func(req *http.Request) {
-				// Add headers matching the check keys
+				// Add headers matching the check keys.
 				req.Header.Set("context", "test-context")
 				req.Header.Set("transaction_id", "test-transaction")
 			},

pkg/plugin/implementation/requestPreProcessor/reqpreprocessor.go

@@ -71,6 +71,7 @@ func update(wrapper map[string]any, key string, value any) any {
 		wrapper[key] = value
 		return value
 	}
+
 	return field
 }
 func isEmpty(v any) bool {
@@ -89,12 +90,12 @@ func validateConfig(cfg *Config) error {
 		return errors.New("config cannot be nil")
 	}
 
-	// Check if CheckKeys is empty
+	// Check if CheckKeys is empty.
 	if len(cfg.CheckKeys) == 0 {
 		return errors.New("checkKeys cannot be empty")
 	}
 
-	// Validate that CheckKeys does not contain empty strings
+	// Validate that CheckKeys does not contain empty strings.
 	for _, key := range cfg.CheckKeys {
 		if key == "" {
 			return errors.New("checkKeys cannot contain empty strings")

pkg/plugin/implementation/requestPreProcessor/reqpreprocessor_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 )
 
-func TestNewUUIDSetter_SuccessCases(t *testing.T) {
+func TestNewUUIDSetterSuccessCases(t *testing.T) {
 	tests := []struct {
 		name         string
 		config       *Config
@@ -111,7 +111,7 @@ func TestNewUUIDSetter_SuccessCases(t *testing.T) {
 	}
 }
 
-func TestNewUUIDSetter_ErrorCases(t *testing.T) {
+func TestNewUUIDSetterErrorCases(t *testing.T) {
 	tests := []struct {
 		name         string
 		config       *Config

pkg/plugin/implementation/schemaValidator/cmd/plugin.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"context"
+	"errors"
+
+	definition "github.com/beckn/beckn-onix/pkg/plugin/definition"
+	schemaValidator "github.com/beckn/beckn-onix/pkg/plugin/implementation/schemaValidator"
+)
+
+// schemaValidatorProvider provides instances of schemaValidator.
+type schemaValidatorProvider struct{}
+
+// New initializes a new Verifier instance.
+func (vp schemaValidatorProvider) New(ctx context.Context, config map[string]string) (definition.SchemaValidator, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	// Extract schemaDir from the config map
+	schemaDir, ok := config["schemaDir"]
+	if !ok || schemaDir == "" {
+		return nil, nil, errors.New("config must contain 'schemaDir'")
+	}
+
+	// Create a new schemaValidator instance with the provided configuration
+	return schemaValidator.New(ctx, &schemaValidator.Config{
+		SchemaDir: schemaDir,
+	})
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider definition.SchemaValidatorProvider = schemaValidatorProvider{}

pkg/plugin/implementation/schemaValidator/cmd/plugin_test.go

@@ -0,0 +1,150 @@
+package main
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// setupTestSchema creates a temporary directory and writes a sample schema file.
+func setupTestSchema(t *testing.T) string {
+	t.Helper()
+
+	// Create a temporary directory for the schema
+	schemaDir, err := os.MkdirTemp("", "schemas")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+
+	// Create the directory structure for the schema file
+	schemaFilePath := filepath.Join(schemaDir, "example", "1.0", "test_schema.json")
+	if err := os.MkdirAll(filepath.Dir(schemaFilePath), 0755); err != nil {
+		t.Fatalf("Failed to create schema directory structure: %v", err)
+	}
+
+	// Define a sample schema
+	schemaContent := `{
+		"type": "object",
+		"properties": {
+			"context": {
+				"type": "object",
+				"properties": {
+					"domain": {"type": "string"},
+					"version": {"type": "string"}
+				},
+				"required": ["domain", "version"]
+			}
+		},
+		"required": ["context"]
+	}`
+
+	// Write the schema to the file
+	if err := os.WriteFile(schemaFilePath, []byte(schemaContent), 0644); err != nil {
+		t.Fatalf("Failed to write schema file: %v", err)
+	}
+
+	return schemaDir
+}
+
+// TestValidatorProviderSuccess tests successful ValidatorProvider implementation.
+func TestValidatorProviderSuccess(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	// Define test cases.
+	tests := []struct {
+		name          string
+		ctx           context.Context
+		config        map[string]string
+		expectedError string
+	}{
+		{
+			name:          "Valid schema directory",
+			ctx:           context.Background(), // Valid context
+			config:        map[string]string{"schemaDir": schemaDir},
+			expectedError: "",
+		},
+	}
+
+	// Test using table-driven tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			vp := schemaValidatorProvider{}
+			schemaValidator, _, err := vp.New(tt.ctx, tt.config)
+
+			// Ensure no error occurred
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+
+			// Ensure the schemaValidator is not nil
+			if schemaValidator == nil {
+				t.Error("expected a non-nil schemaValidator, got nil")
+			}
+		})
+	}
+}
+
+// TestValidatorProviderSuccess tests cases where ValidatorProvider creation should fail.
+func TestValidatorProviderFailure(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	// Define test cases.
+	tests := []struct {
+		name          string
+		ctx           context.Context
+		config        map[string]string
+		expectedError string
+	}{
+		{
+			name:          "Config is empty",
+			ctx:           context.Background(),
+			config:        map[string]string{},
+			expectedError: "config must contain 'schemaDir'",
+		},
+		{
+			name:          "schemaDir is empty",
+			ctx:           context.Background(),
+			config:        map[string]string{"schemaDir": ""},
+			expectedError: "config must contain 'schemaDir'",
+		},
+		{
+			name:          "Invalid schema directory",
+			ctx:           context.Background(), // Valid context
+			config:        map[string]string{"schemaDir": "/invalid/dir"},
+			expectedError: "failed to initialise schemaValidator: schema directory does not exist: /invalid/dir",
+		},
+		{
+			name:          "Nil context",
+			ctx:           nil, // Nil context
+			config:        map[string]string{"schemaDir": schemaDir},
+			expectedError: "context cannot be nil",
+		},
+	}
+
+	// Test using table-driven tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			vp := schemaValidatorProvider{}
+			_, _, err := vp.New(tt.ctx, tt.config)
+
+			// Check for expected error
+			if tt.expectedError != "" {
+				if err == nil || !strings.Contains(err.Error(), tt.expectedError) {
+					t.Errorf("expected error %q, got %v", tt.expectedError, err)
+				}
+				return
+			}
+
+			// Ensure no error occurred
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+		})
+	}
+}

pkg/plugin/implementation/schemaValidator/schemaValidator.go

@@ -0,0 +1,197 @@
+package schemaValidator
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+
+	response "github.com/beckn/beckn-onix/pkg/response"
+
+	"github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+// Payload represents the structure of the data payload with context information.
+type payload struct {
+	Context struct {
+		Domain  string `json:"domain"`
+		Version string `json:"version"`
+	} `json:"context"`
+}
+
+// SchemaValidator implements the Validator interface.
+type SchemaValidator struct {
+	config      *Config
+	schemaCache map[string]*jsonschema.Schema
+}
+
+// Config struct for SchemaValidator.
+type Config struct {
+	SchemaDir string
+}
+
+// New creates a new ValidatorProvider instance.
+func New(ctx context.Context, config *Config) (*SchemaValidator, func() error, error) {
+	// Check if config is nil
+	if config == nil {
+		return nil, nil, fmt.Errorf("config cannot be nil")
+	}
+	v := &SchemaValidator{
+		config:      config,
+		schemaCache: make(map[string]*jsonschema.Schema),
+	}
+
+	// Call Initialise function to load schemas and get validators
+	if err := v.initialise(); err != nil {
+		return nil, nil, fmt.Errorf("failed to initialise schemaValidator: %v", err)
+	}
+	return v, nil, nil
+}
+
+// Validate validates the given data against the schema.
+func (v *SchemaValidator) Validate(ctx context.Context, url *url.URL, data []byte) error {
+	var payloadData payload
+	err := json.Unmarshal(data, &payloadData)
+	if err != nil {
+		return fmt.Errorf("failed to parse JSON payload: %v", err)
+	}
+
+	// Extract domain, version, and endpoint from the payload and uri.
+	cxt_domain := payloadData.Context.Domain
+	version := payloadData.Context.Version
+	version = fmt.Sprintf("v%s", version)
+
+	endpoint := path.Base(url.String())
+	// ToDo Add debug log here
+	fmt.Println("Handling request for endpoint:", endpoint)
+	domain := strings.ToLower(cxt_domain)
+	domain = strings.ReplaceAll(domain, ":", "_")
+
+	// Construct the schema file name.
+	schemaFileName := fmt.Sprintf("%s_%s_%s", domain, version, endpoint)
+
+	// Retrieve the schema from the cache.
+	schema, exists := v.schemaCache[schemaFileName]
+	if !exists {
+		return fmt.Errorf("schema not found for domain: %s", schemaFileName)
+	}
+
+	var jsonData any
+	if err := json.Unmarshal(data, &jsonData); err != nil {
+		return fmt.Errorf("failed to parse JSON data: %v", err)
+	}
+	err = schema.Validate(jsonData)
+	if err != nil {
+		// Handle schema validation errors
+		if validationErr, ok := err.(*jsonschema.ValidationError); ok {
+			// Convert validation errors into an array of SchemaValError
+			var schemaErrors []response.Error
+			for _, cause := range validationErr.Causes {
+				// Extract the path and message from the validation error
+				path := strings.Join(cause.InstanceLocation, ".") // JSON path to the invalid field
+				message := cause.Error()                          // Validation error message
+
+				// Append the error to the schemaErrors array
+				schemaErrors = append(schemaErrors, response.Error{
+					Paths:   path,
+					Message: message,
+				})
+			}
+			// Return the array of schema validation errors
+			return &response.SchemaValidationErr{Errors: schemaErrors}
+		}
+		// Return a generic error for non-validation errors
+		return fmt.Errorf("validation failed: %v", err)
+	}
+
+	// Return nil if validation succeeds
+	return nil
+}
+
+// ValidatorProvider provides instances of Validator.
+type ValidatorProvider struct{}
+
+// Initialise initialises the validator provider by compiling all the JSON schema files
+// from the specified directory and storing them in a cache indexed by their schema filenames.
+func (v *SchemaValidator) initialise() error {
+	schemaDir := v.config.SchemaDir
+	// Check if the directory exists and is accessible.
+	info, err := os.Stat(schemaDir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return fmt.Errorf("schema directory does not exist: %s", schemaDir)
+		}
+		return fmt.Errorf("failed to access schema directory: %v", err)
+	}
+	if !info.IsDir() {
+		return fmt.Errorf("provided schema path is not a directory: %s", schemaDir)
+	}
+
+	compiler := jsonschema.NewCompiler()
+
+	// Helper function to process directories recursively.
+	var processDir func(dir string) error
+	processDir = func(dir string) error {
+		entries, err := os.ReadDir(dir)
+		if err != nil {
+			return fmt.Errorf("failed to read directory: %v", err)
+		}
+
+		for _, entry := range entries {
+			path := filepath.Join(dir, entry.Name())
+			if entry.IsDir() {
+				// Recursively process subdirectories.
+				if err := processDir(path); err != nil {
+					return err
+				}
+			} else if filepath.Ext(entry.Name()) == ".json" {
+				// Process JSON files.
+				compiledSchema, err := compiler.Compile(path)
+				if err != nil {
+					return fmt.Errorf("failed to compile JSON schema from file %s: %v", entry.Name(), err)
+				}
+
+				// Use relative path from schemaDir to avoid absolute paths and make schema keys domain/version specific.
+				relativePath, err := filepath.Rel(schemaDir, path)
+				if err != nil {
+					return fmt.Errorf("failed to get relative path for file %s: %v", entry.Name(), err)
+				}
+				// Split the relative path to get domain, version, and schema.
+				parts := strings.Split(relativePath, string(os.PathSeparator))
+
+				// Ensure that the file path has at least 3 parts: domain, version, and schema file.
+				if len(parts) < 3 {
+					return fmt.Errorf("invalid schema file structure, expected domain/version/schema.json but got: %s", relativePath)
+				}
+
+				// Extract domain, version, and schema filename from the parts.
+				// Validate that the extracted parts are non-empty.
+				domain := strings.TrimSpace(parts[0])
+				version := strings.TrimSpace(parts[1])
+				schemaFileName := strings.TrimSpace(parts[2])
+				schemaFileName = strings.TrimSuffix(schemaFileName, ".json")
+
+				if domain == "" || version == "" || schemaFileName == "" {
+					return fmt.Errorf("invalid schema file structure, one or more components are empty. Relative path: %s", relativePath)
+				}
+
+				// Construct a unique key combining domain, version, and schema name (e.g., ondc_trv10_v2.0.0_schema).
+				uniqueKey := fmt.Sprintf("%s_%s_%s", domain, version, schemaFileName)
+				// Store the compiled schema in the SchemaCache using the unique key.
+				v.schemaCache[uniqueKey] = compiledSchema
+			}
+		}
+		return nil
+	}
+
+	// Start processing from the root schema directory.
+	if err := processDir(schemaDir); err != nil {
+		return fmt.Errorf("failed to read schema directory: %v", err)
+	}
+
+	return nil
+}

pkg/plugin/implementation/schemaValidator/schemaValidator_test.go

@@ -0,0 +1,353 @@
+package schemaValidator
+
+import (
+	"context"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+// setupTestSchema creates a temporary directory and writes a sample schema file.
+func setupTestSchema(t *testing.T) string {
+	t.Helper()
+
+	// Create a temporary directory for the schema
+	schemaDir, err := os.MkdirTemp("", "schemas")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+
+	// Create the directory structure for the schema file
+	schemaFilePath := filepath.Join(schemaDir, "example", "v1.0", "endpoint.json")
+	if err := os.MkdirAll(filepath.Dir(schemaFilePath), 0755); err != nil {
+		t.Fatalf("Failed to create schema directory structure: %v", err)
+	}
+
+	// Define a sample schema
+	schemaContent := `{
+		"type": "object",
+		"properties": {
+			"context": {
+				"type": "object",
+				"properties": {
+					"domain": {"type": "string"},
+					"version": {"type": "string"},
+					"action": {"type": "string"}
+				},
+				"required": ["domain", "version", "action"]
+			}
+		},
+		"required": ["context"]
+	}`
+
+	// Write the schema to the file
+	if err := os.WriteFile(schemaFilePath, []byte(schemaContent), 0644); err != nil {
+		t.Fatalf("Failed to write schema file: %v", err)
+	}
+
+	return schemaDir
+}
+
+func TestValidator_Validate_Success(t *testing.T) {
+	tests := []struct {
+		name    string
+		url     string
+		payload string
+		wantErr bool
+	}{
+		{
+			name:    "Valid payload",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0", "action": "endpoint"}}`,
+			wantErr: false,
+		},
+	}
+
+	// Setup a temporary schema directory for testing
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	v, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Fatalf("Failed to create validator: %v", err)
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			u, _ := url.Parse(tt.url)
+			err := v.Validate(context.Background(), u, []byte(tt.payload))
+			if err != nil {
+				t.Errorf("Unexpected error: %v", err)
+			} else {
+				t.Logf("Test %s passed with no errors", tt.name)
+			}
+		})
+	}
+}
+
+func TestValidator_Validate_Failure(t *testing.T) {
+	tests := []struct {
+		name    string
+		url     string
+		payload string
+		wantErr string
+	}{
+		{
+			name:    "Invalid JSON payload",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"`,
+			wantErr: "failed to parse JSON payload",
+		},
+		{
+			name:    "Schema validation failure",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"}}`,
+			wantErr: "context: at '/context': missing property 'action'",
+		},
+		{
+			name:    "Schema not found",
+			url:     "http://example.com/unknown_endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"}}`,
+			wantErr: "schema not found for domain",
+		},
+	}
+
+	// Setup a temporary schema directory for testing
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	v, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Fatalf("Failed to create validator: %v", err)
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			u, _ := url.Parse(tt.url)
+			err := v.Validate(context.Background(), u, []byte(tt.payload))
+			if tt.wantErr != "" {
+				if err == nil {
+					t.Errorf("Expected error containing '%s', but got nil", tt.wantErr)
+				} else if !strings.Contains(err.Error(), tt.wantErr) {
+					t.Errorf("Expected error containing '%s', but got '%v'", tt.wantErr, err)
+				} else {
+					t.Logf("Test %s passed with expected error: %v", tt.name, err)
+				}
+			} else {
+				if err != nil {
+					t.Errorf("Unexpected error: %v", err)
+				} else {
+					t.Logf("Test %s passed with no errors", tt.name)
+				}
+			}
+		})
+	}
+}
+
+func TestValidator_Initialise(t *testing.T) {
+	tests := []struct {
+		name      string
+		setupFunc func(schemaDir string) error
+		wantErr   string
+	}{
+		{
+			name: "Schema directory does not exist",
+			setupFunc: func(schemaDir string) error {
+				// Do not create the schema directory
+				return nil
+
+			},
+			wantErr: "schema directory does not exist",
+		},
+		{
+			name: "Schema path is not a directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a file instead of a directory
+				return os.WriteFile(schemaDir, []byte{}, 0644)
+			},
+			wantErr: "provided schema path is not a directory",
+		},
+		{
+			name: "Invalid schema file structure",
+			setupFunc: func(schemaDir string) error {
+				// Create an invalid schema file structure
+				invalidSchemaFile := filepath.Join(schemaDir, "invalid_schema.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{}`), 0644)
+			},
+			wantErr: "invalid schema file structure",
+		},
+		{
+			name: "Failed to compile JSON schema",
+			setupFunc: func(schemaDir string) error {
+				// Create a schema file with invalid JSON
+				invalidSchemaFile := filepath.Join(schemaDir, "example", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{invalid json}`), 0644)
+			},
+			wantErr: "failed to compile JSON schema",
+		},
+		{
+			name: "Invalid schema file structure with empty components",
+			setupFunc: func(schemaDir string) error {
+				// Create a schema file with empty domain, version, or schema name
+				invalidSchemaFile := filepath.Join(schemaDir, "", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{
+					"type": "object",
+					"properties": {
+						"context": {
+							"type": "object",
+							"properties": {
+								"domain": {"type": "string"},
+								"version": {"type": "string"}
+							},
+							"required": ["domain", "version"]
+						}
+					},
+					"required": ["context"]
+				}`), 0644)
+			},
+			wantErr: "failed to read schema directory: invalid schema file structure, expected domain/version/schema.json but got: 1.0/endpoint.json",
+		},
+		{
+			name: "Failed to read directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a directory and remove read permissions
+				if err := os.MkdirAll(schemaDir, 0000); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return nil
+			},
+			wantErr: "failed to read directory",
+		},
+		{
+			name: "Valid schema directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a valid schema file
+				validSchemaFile := filepath.Join(schemaDir, "example", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(validSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(validSchemaFile, []byte(`{
+					"type": "object",
+					"properties": {
+						"context": {
+							"type": "object",
+							"properties": {
+								"domain": {"type": "string"},
+								"version": {"type": "string"}
+							},
+							"required": ["domain", "version"]
+						}
+					},
+					"required": ["context"]
+				}`), 0644)
+			},
+			wantErr: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Setup a temporary schema directory for testing
+			schemaDir := filepath.Join(os.TempDir(), "schemas")
+			defer os.RemoveAll(schemaDir)
+
+			// Run the setup function to prepare the test case
+			if err := tt.setupFunc(schemaDir); err != nil {
+				t.Fatalf("setupFunc() error = %v", err)
+			}
+
+			config := &Config{SchemaDir: schemaDir}
+			v := &SchemaValidator{
+				config:      config,
+				schemaCache: make(map[string]*jsonschema.Schema),
+			}
+
+			err := v.initialise()
+			if (err != nil && !strings.Contains(err.Error(), tt.wantErr)) || (err == nil && tt.wantErr != "") {
+				t.Errorf("Error: initialise() returned error = %v, expected error = %v", err, tt.wantErr)
+			} else if err == nil {
+				t.Logf("Test %s passed: validator initialized successfully", tt.name)
+			} else {
+				t.Logf("Test %s passed with expected error: %v", tt.name, err)
+			}
+		})
+	}
+}
+
+func TestValidatorNew_Success(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	_, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Errorf("Unexpected error: %v", err)
+	}
+}
+
+func TestValidatorNewFailure(t *testing.T) {
+	tests := []struct {
+		name      string
+		config    *Config
+		setupFunc func(schemaDir string) error
+		wantErr   string
+	}{
+		{
+			name:   "Config is nil",
+			config: nil,
+			setupFunc: func(schemaDir string) error {
+				return nil
+			},
+			wantErr: "config cannot be nil",
+		},
+		{
+			name: "Failed to initialise validators",
+			config: &Config{
+				SchemaDir: "/invalid/path",
+			},
+			setupFunc: func(schemaDir string) error {
+				// Do not create the schema directory
+				return nil
+			},
+			wantErr: "ailed to initialise schemaValidator: schema directory does not exist: /invalid/path",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Run the setup function if provided
+			if tt.setupFunc != nil {
+				schemaDir := ""
+				if tt.config != nil {
+					schemaDir = tt.config.SchemaDir
+				}
+				if err := tt.setupFunc(schemaDir); err != nil {
+					t.Fatalf("Setup function failed: %v", err)
+				}
+			}
+
+			// Call the New function with the test config
+			_, _, err := New(context.Background(), tt.config)
+			if (err != nil && !strings.Contains(err.Error(), tt.wantErr)) || (err == nil && tt.wantErr != "") {
+				t.Errorf("Error: New() returned error = %v, expected error = %v", err, tt.wantErr)
+			} else {
+				t.Logf("Test %s passed with expected error: %v", tt.name, err)
+			}
+		})
+	}
+}

pkg/response/response.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strings"
 )
 
 type ErrorType string
@@ -23,6 +24,20 @@ type Error struct {
 	Paths   string `json:"paths,omitempty"`
 }
 
+// SchemaValidationErr represents a collection of schema validation failures.
+type SchemaValidationErr struct {
+	Errors []Error
+}
+
+// Error implements the error interface for SchemaValidationErr.
+func (e *SchemaValidationErr) Error() string {
+	var errorMessages []string
+	for _, err := range e.Errors {
+		errorMessages = append(errorMessages, fmt.Sprintf("%s: %s", err.Paths, err.Message))
+	}
+	return strings.Join(errorMessages, "; ")
+}
+
 type Message struct {
 	Ack struct {
 		Status string `json:"status,omitempty"`