Add test coverage for HTTP MCP server URL validation

pkg/workflow/mcp_http_url_validation_test.go

@@ -0,0 +1,96 @@
+package workflow
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// TestHTTPMCPServerRequiresURL tests that HTTP MCP servers require a url field
+func TestHTTPMCPServerRequiresURL(t *testing.T) {
+	tests := []struct {
+		name        string
+		workflow    string
+		expectError bool
+		errorText   string
+	}{
+		{
+			name: "HTTP MCP server without url should fail",
+			workflow: `---
+on: issues
+permissions:
+  contents: read
+engine: copilot
+mcp-servers:
+  test-http:
+    type: http
+---
+
+# Test workflow
+`,
+			expectError: true,
+			errorText:   "missing property 'url'",
+		},
+		{
+			name: "HTTP MCP server with url should pass",
+			workflow: `---
+on: issues
+permissions:
+  contents: read
+engine: copilot
+mcp-servers:
+  test-http:
+    type: http
+    url: "https://example.com"
+---
+
+# Test workflow
+`,
+			expectError: false,
+		},
+		{
+			name: "HTTP MCP server with url only (inferred type) should pass",
+			workflow: `---
+on: issues
+permissions:
+  contents: read
+engine: copilot
+mcp-servers:
+  test-http:
+    url: "https://example.com"
+---
+
+# Test workflow
+`,
+			expectError: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Create temporary workflow file
+			tmpDir := t.TempDir()
+			workflowPath := filepath.Join(tmpDir, "test.md")
+			if err := os.WriteFile(workflowPath, []byte(tt.workflow), 0644); err != nil {
+				t.Fatalf("Failed to write workflow file: %v", err)
+			}
+
+			// Create compiler and try to compile the workflow
+			compiler := NewCompiler(false, "", "test")
+			err := compiler.CompileWorkflow(workflowPath)
+
+			if tt.expectError {
+				if err == nil {
+					t.Errorf("Expected error but got none")
+				} else if tt.errorText != "" && !strings.Contains(err.Error(), tt.errorText) {
+					t.Errorf("Expected error to contain %q, got: %v", tt.errorText, err)
+				}
+			} else {
+				if err != nil {
+					t.Errorf("Unexpected error: %v", err)
+				}
+			}
+		})
+	}
+}