add test for nats.message.create

internal/processor/test/nats-message-create_test.go

@@ -1,8 +1,10 @@
 package processor_test
 
 import (
+	"reflect"
 	"testing"
 
+	"github.com/jwetzell/showbridge-go/internal/common"
 	"github.com/jwetzell/showbridge-go/internal/config"
 	"github.com/jwetzell/showbridge-go/internal/processor"
 )
@@ -29,3 +31,180 @@ func TestNATSMessageCreateFromRegistry(t *testing.T) {
 		t.Fatalf("nats.message.create processor has wrong type: %s", processorInstance.Type())
 	}
 }
+
+func TestGoodNATSMessageCreate(t *testing.T) {
+
+	tests := []struct {
+		name     string
+		expected processor.NATSMessage
+		params   map[string]any
+		payload  any
+	}{
+		{
+			name: "simple payload",
+			params: map[string]any{
+				"subject": "test",
+				"payload": "Hello, World!",
+			},
+			payload: nil,
+			expected: processor.NATSMessage{
+				Subject: "test",
+				Payload: []byte("Hello, World!"),
+			},
+		},
+		{
+			name: "payload with template",
+			params: map[string]any{
+				"subject": "test",
+				"payload": "Hello, {{.Payload.Name}}!",
+			},
+			payload: map[string]any{
+				"Name": "Alice",
+			},
+			expected: processor.NATSMessage{
+				Subject: "test",
+				Payload: []byte("Hello, Alice!"),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+
+			registration, ok := processor.ProcessorRegistry["nats.message.create"]
+			if !ok {
+				t.Fatalf("nats.message.create processor not registered")
+			}
+
+			processorInstance, err := registration.New(config.ProcessorConfig{
+				Type:   "nats.message.create",
+				Params: test.params,
+			})
+
+			if err != nil {
+				t.Fatalf("nats.message.create failed to create processor: %s", err)
+			}
+
+			got, err := processorInstance.Process(t.Context(), common.GetWrappedPayload(t.Context(), test.payload))
+			if err != nil {
+				t.Fatalf("nats.message.create processing failed: %s", err)
+			}
+
+			if !reflect.DeepEqual(got.Payload, test.expected) {
+				t.Fatalf("nats.message.create got %+v (%T), expected %+v (%T)", got.Payload, got.Payload, test.expected, test.expected)
+			}
+		})
+	}
+}
+
+func TestBadNATSMessageCreate(t *testing.T) {
+	tests := []struct {
+		name        string
+		params      map[string]any
+		payload     any
+		errorString string
+	}{
+		{
+			name: "missing subject param",
+			params: map[string]any{
+				"payload": "Hello, World!",
+			},
+			payload:     nil,
+			errorString: "nats.message.create subject error: not found",
+		},
+		{
+			name: "subject param not a string",
+			params: map[string]any{
+				"subject": 123,
+				"payload": "Hello, World!",
+			},
+			payload:     nil,
+			errorString: "nats.message.create subject error: not a string",
+		},
+		{
+			name: "missing payload param",
+			params: map[string]any{
+				"subject": "test",
+			},
+			payload:     nil,
+			errorString: "nats.message.create payload error: not found",
+		},
+		{
+			name: "payload param not a string",
+			params: map[string]any{
+				"subject": "test",
+				"payload": 123,
+			},
+			payload:     nil,
+			errorString: "nats.message.create payload error: not a string",
+		},
+		{
+			name: "payload template error",
+			params: map[string]any{
+				"subject": "test",
+				"payload": "Hello, {{.Payload.Name}}!",
+			},
+			payload:     nil,
+			errorString: "template: payload:1:17: executing \"payload\" at <.Payload.Name>: nil pointer evaluating interface {}.Name",
+		},
+		{
+			name: "subject template error",
+			params: map[string]any{
+				"subject": "test.{{.Payload.Name}}",
+				"payload": "Hello, World!",
+			},
+			payload:     nil,
+			errorString: "template: subject:1:15: executing \"subject\" at <.Payload.Name>: nil pointer evaluating interface {}.Name",
+		},
+		{
+			name: "subject template syntax error",
+			params: map[string]any{
+				"subject": "{{.Payload.Name",
+				"payload": "Hello, World!",
+			},
+			payload:     nil,
+			errorString: "template: subject:1: unclosed action",
+		},
+		{
+			name: "payload template syntax error",
+			params: map[string]any{
+				"subject": "test",
+				"payload": "Hello, {{.Payload.Name",
+			},
+			payload:     nil,
+			errorString: "template: payload:1: unclosed action",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+
+			registration, ok := processor.ProcessorRegistry["nats.message.create"]
+			if !ok {
+				t.Fatalf("nats.message.create processor not registered")
+			}
+
+			processorInstance, err := registration.New(config.ProcessorConfig{
+				Type:   "nats.message.create",
+				Params: test.params,
+			})
+
+			if err != nil {
+				if test.errorString != err.Error() {
+					t.Fatalf("nats.message.create got error '%s', expected '%s'", err.Error(), test.errorString)
+				}
+				return
+			}
+
+			got, err := processorInstance.Process(t.Context(), common.GetWrappedPayload(t.Context(), test.payload))
+
+			if err == nil {
+				t.Fatalf("nats.message.create expected to fail but succeeded, got: %v", got)
+			}
+
+			if err.Error() != test.errorString {
+				t.Fatalf("nats.message.create got error '%s', expected '%s'", err.Error(), test.errorString)
+			}
+		})
+	}
+}