Added Test cases for the module

- Code coverage for Module is 93.1%

core/module/handler/config.go

@@ -44,8 +44,8 @@ const (
 	HandlerTypeLookup Type = "lookUp"
 )
 
-// pluginCfg holds the configuration for various plugins.
-type pluginCfg struct {
+// PluginCfg holds the configuration for various plugins.
+type PluginCfg struct {
 	SchemaValidator *plugin.Config  `yaml:"schemaValidator,omitempty"`
 	SignValidator   *plugin.Config  `yaml:"signValidator,omitempty"`
 	Publisher       *plugin.Config  `yaml:"publisher,omitempty"`
@@ -59,7 +59,7 @@ type pluginCfg struct {
 
 // Config holds the configuration for request processing handlers.
 type Config struct {
-	Plugins      pluginCfg `yaml:"plugins"`
+	Plugins      PluginCfg `yaml:"plugins"`
 	Steps        []string
 	Type         Type
 	RegistryURL  string `yaml:"registryUrl"`

core/module/handler/stdHandler.go

@@ -189,7 +189,7 @@ func loadKeyManager(ctx context.Context, mgr PluginManager, cache definition.Cac
 }
 
 // initPlugins initializes required plugins for the processor.
-func (h *stdHandler) initPlugins(ctx context.Context, mgr PluginManager, cfg *pluginCfg, regURL string) error {
+func (h *stdHandler) initPlugins(ctx context.Context, mgr PluginManager, cfg *PluginCfg, regURL string) error {
 	var err error
 	if h.cache, err = loadPlugin(ctx, "Cache", cfg.Cache, mgr.Cache); err != nil {
 		return err

core/module/module_test.go

@@ -0,0 +1,165 @@
+package module
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"testing"
+
+	"github.com/beckn/beckn-onix/core/module/handler"
+	"github.com/beckn/beckn-onix/pkg/plugin"
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+)
+
+// mockPluginManager is a mock implementation of the PluginManager interface
+// with support for dynamically setting behavior.
+type mockPluginManager struct {
+	middlewareFunc func(ctx context.Context, cfg *plugin.Config) (func(http.Handler) http.Handler, error)
+}
+
+// Middleware returns a mock middleware function based on the provided configuration.
+func (m *mockPluginManager) Middleware(ctx context.Context, cfg *plugin.Config) (func(http.Handler) http.Handler, error) {
+	return m.middlewareFunc(ctx, cfg)
+}
+
+// SignValidator returns a mock verifier implementation.
+func (m *mockPluginManager) SignValidator(ctx context.Context, cfg *plugin.Config) (definition.Verifier, error) {
+	return nil, nil
+}
+
+// Validator returns a mock schema validator implementation.
+func (m *mockPluginManager) Validator(ctx context.Context, cfg *plugin.Config) (definition.SchemaValidator, error) {
+	return nil, nil
+}
+
+// Router returns a mock router implementation.
+func (m *mockPluginManager) Router(ctx context.Context, cfg *plugin.Config) (definition.Router, error) {
+	return nil, nil
+}
+
+// Publisher returns a mock publisher implementation.
+func (m *mockPluginManager) Publisher(ctx context.Context, cfg *plugin.Config) (definition.Publisher, error) {
+	return nil, nil
+}
+
+// Signer returns a mock signer implementation.
+func (m *mockPluginManager) Signer(ctx context.Context, cfg *plugin.Config) (definition.Signer, error) {
+	return nil, nil
+}
+
+// Step returns a mock step implementation.
+func (m *mockPluginManager) Step(ctx context.Context, cfg *plugin.Config) (definition.Step, error) {
+	return nil, nil
+}
+
+// Cache returns a mock cache implementation.
+func (m *mockPluginManager) Cache(ctx context.Context, cfg *plugin.Config) (definition.Cache, error) {
+	return nil, nil
+}
+
+// KeyManager returns a mock key manager implementation.
+func (m *mockPluginManager) KeyManager(ctx context.Context, cache definition.Cache, rLookup definition.RegistryLookup, cfg *plugin.Config) (definition.KeyManager, error) {
+	return nil, nil
+}
+
+// SchemaValidator returns a mock schema validator implementation.
+func (m *mockPluginManager) SchemaValidator(ctx context.Context, cfg *plugin.Config) (definition.SchemaValidator, error) {
+	return nil, nil
+}
+
+// TestRegisterSuccess tests scenarios where the handler registration should succeed.
+func TestRegisterSuccess(t *testing.T) {
+	tests := []struct {
+		name        string
+		mCfgs       []Config
+		mockManager *mockPluginManager
+	}{
+		{
+			name: "successful registration",
+			mCfgs: []Config{
+				{
+					Name: "test-module",
+					Path: "/test",
+					Handler: handler.Config{
+						Type: handler.HandlerTypeStd,
+						Plugins: handler.PluginCfg{
+							Middleware: []plugin.Config{{ID: "mock-middleware"}},
+						},
+					},
+				},
+			},
+			mockManager: &mockPluginManager{
+				middlewareFunc: func(ctx context.Context, cfg *plugin.Config) (func(http.Handler) http.Handler, error) {
+					return func(next http.Handler) http.Handler {
+						return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+							next.ServeHTTP(w, r)
+						})
+					}, nil
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mux := http.NewServeMux()
+			err := Register(context.Background(), tt.mCfgs, mux, tt.mockManager)
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+			}
+		})
+	}
+}
+
+// TestRegisterFailure tests scenarios where the handler registration should fail.
+func TestRegisterFailure(t *testing.T) {
+	tests := []struct {
+		name        string
+		mCfgs       []Config
+		mockManager *mockPluginManager
+	}{
+		{
+			name: "invalid handler type",
+			mCfgs: []Config{
+				{
+					Name: "invalid-module",
+					Path: "/invalid",
+					Handler: handler.Config{
+						Type: "invalid-type",
+					},
+				},
+			},
+			mockManager: &mockPluginManager{},
+		},
+		{
+			name: "middleware error",
+			mCfgs: []Config{
+				{
+					Name: "test-module",
+					Path: "/test",
+					Handler: handler.Config{
+						Type: handler.HandlerTypeStd,
+						Plugins: handler.PluginCfg{
+							Middleware: []plugin.Config{{ID: "mock-middleware"}},
+						},
+					},
+				},
+			},
+			mockManager: &mockPluginManager{
+				middlewareFunc: func(ctx context.Context, cfg *plugin.Config) (func(http.Handler) http.Handler, error) {
+					return nil, errors.New("middleware error")
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mux := http.NewServeMux()
+			err := Register(context.Background(), tt.mCfgs, mux, tt.mockManager)
+			if err == nil {
+				t.Errorf("expected an error but got nil")
+			}
+		})
+	}
+}