added unit test for the search Handler

internal/tests/integration/apiSearchHandler_test.go

@@ -0,0 +1,71 @@
+package main
+
+import (
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestSearchHandler(t *testing.T) {
+	tests := []struct {
+		name           string
+		query          string
+		expectedStatus int
+		expectedBody   string
+	}{
+		{
+			name:           "Missing query parameter",
+			query:          "",
+			expectedStatus: http.StatusBadRequest,
+			expectedBody:   "Missing query parameter 'q'",
+		},
+		{
+			name:           "Wildcard search",
+			query:          "*",
+			expectedStatus: http.StatusOK,
+			expectedBody:   "No search results", 
+		},
+		{
+			name:           "No matching results",
+			query:          "nonexistent",
+			expectedStatus: http.StatusOK,
+			expectedBody:   "No search results",
+		},
+		{
+			name:           "Matching result",
+			query:          "example", 
+			expectedStatus: http.StatusOK,
+			expectedBody:   "total",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+
+			req := httptest.NewRequest("GET", "/search?q="+tt.query, nil)
+			rec := httptest.NewRecorder()
+
+
+			SearchHandler(rec, req)
+
+
+			if rec.Code != tt.expectedStatus {
+				t.Errorf("expected status %v, got %v", tt.expectedStatus, rec.Code)
+			}
+
+
+			respBody, err := ioutil.ReadAll(rec.Body)
+			if err != nil {
+				t.Fatalf("Failed to read response body: %v", err)
+			}
+			bodyString := string(respBody)
+
+
+			if !strings.Contains(bodyString, tt.expectedBody) {
+				t.Errorf("expected body to contain %q, got %q", tt.expectedBody, bodyString)
+			}
+		})
+	}
+}