feat: Implement agent heartbeat with mTLS and node status tracking

internal/api/node_status_handler_test.go

@@ -0,0 +1,108 @@
+package api
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"git.dws.rip/dubey/kat/internal/store"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+func TestNodeStatusHandler(t *testing.T) {
+	// Create mock state store
+	mockStore := new(MockStateStore)
+	mockStore.On("Put", mock.Anything, mock.MatchedBy(func(key string) bool {
+		return key == "/kat/nodes/status/test-node"
+	}), mock.Anything).Return(nil)
+
+	// Create node status handler
+	handler := NewNodeStatusHandler(mockStore)
+
+	// Create test request
+	statusReq := NodeStatusRequest{
+		NodeName:  "test-node",
+		NodeUID:   "test-uid",
+		Timestamp: time.Now(),
+		Resources: struct {
+			Capacity    map[string]string `json:"capacity"`
+			Allocatable map[string]string `json:"allocatable"`
+		}{
+			Capacity: map[string]string{
+				"cpu":    "2000m",
+				"memory": "4096Mi",
+			},
+			Allocatable: map[string]string{
+				"cpu":    "1800m",
+				"memory": "3800Mi",
+			},
+		},
+		OverlayNetwork: struct {
+			Status       string `json:"status"`
+			LastPeerSync string `json:"lastPeerSync"`
+		}{
+			Status:       "connected",
+			LastPeerSync: time.Now().Format(time.RFC3339),
+		},
+	}
+	reqBody, err := json.Marshal(statusReq)
+	if err != nil {
+		t.Fatalf("Failed to marshal status request: %v", err)
+	}
+
+	// Create HTTP request
+	req := httptest.NewRequest("POST", "/v1alpha1/nodes/test-node/status", bytes.NewBuffer(reqBody))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+
+	// Call handler
+	handler(w, req)
+
+	// Check response
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(t, http.StatusOK, resp.StatusCode)
+
+	// Verify mock was called
+	mockStore.AssertExpectations(t)
+}
+
+func TestNodeStatusHandlerNameMismatch(t *testing.T) {
+	// Create mock state store
+	mockStore := new(MockStateStore)
+
+	// Create node status handler
+	handler := NewNodeStatusHandler(mockStore)
+
+	// Create test request with mismatched node name
+	statusReq := NodeStatusRequest{
+		NodeName:  "wrong-node", // This doesn't match the URL path
+		NodeUID:   "test-uid",
+		Timestamp: time.Now(),
+	}
+	reqBody, err := json.Marshal(statusReq)
+	if err != nil {
+		t.Fatalf("Failed to marshal status request: %v", err)
+	}
+
+	// Create HTTP request
+	req := httptest.NewRequest("POST", "/v1alpha1/nodes/test-node/status", bytes.NewBuffer(reqBody))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+
+	// Call handler
+	handler(w, req)
+
+	// Check response - should be bad request due to name mismatch
+	resp := w.Result()
+	defer resp.Body.Close()
+	assert.Equal(t, http.StatusBadRequest, resp.StatusCode)
+
+	// Verify mock was not called
+	mockStore.AssertNotCalled(t, "Put", mock.Anything, mock.Anything, mock.Anything)
+}