add failing test

modules/caddytls/connpolicy_test.go

@@ -20,6 +20,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 )
 
@@ -278,3 +279,50 @@ func TestClientAuthenticationUnmarshalCaddyfileWithDirectiveName(t *testing.T) {
 		})
 	}
 }
+
+func TestClientAuthenticationProvision(t *testing.T) {
+	tests := []struct {
+		name     string
+		ca       ClientAuthentication
+		expected ClientAuthentication
+		wantErr  bool
+	}{
+		{
+			name: "specifying both 'CARaw' and 'TrustedCACerts' produces an error",
+			ca: ClientAuthentication{
+				CARaw:          json.RawMessage(`{"provider":"inline","trusted_ca_certs":["foo"]}`),
+				TrustedCACerts: []string{"foo"},
+			},
+			wantErr: true,
+		},
+		{
+			name: "specifying both 'CARaw' and 'TrustedCACertPEMFiles' produces an error",
+			ca: ClientAuthentication{
+				CARaw:                 json.RawMessage(`{"provider":"inline","trusted_ca_certs":["foo"]}`),
+				TrustedCACertPEMFiles: []string{"foo"},
+			},
+			wantErr: true,
+		},
+		{
+			name: "setting 'TrustedCACerts' provisions the cert pool",
+			ca: ClientAuthentication{
+				TrustedCACerts: []string{test_der_1},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.ca.provision(caddy.Context{})
+			if (err != nil) != tt.wantErr {
+				t.Errorf("ClientAuthentication.provision() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !tt.wantErr {
+				if tt.ca.ca.CertPool() == nil {
+					t.Error("CertPool is nil, expected non-nil value")
+				}
+			}
+		})
+	}
+}