syntax = "proto2";

package pts_chre;

option java_package = "com.google.android.chre.pts.app";
option java_outer_classname = "PtsChreMessages";

// The message types used in PTS test nanoapps. Some of them are H2C
// (Host-To-CHRE) and others are C2H (CHRE-To-Host). One message type must be
// either H2C or C2H. Each message type can choose to have payload or not.
// Payload can be added to a message type with no payload initially. But once
// one message type has payload, the payload message should not be changed.
enum MessageType {
  // 0 is reserved to avoid misinterpret corrupted data.
  UNDEFINED = 0;

  // H2C: Tells the nanoapp to begin the test. No payload.
  PTS_TEST_START = 1;

  // C2H: TestResult message payload.
  PTS_TEST_RESULT = 2;
}

// A message sent by the nanoapp to indicate the result of a test, optionally
// containing an error message.
message TestResult {
  enum Code {
    TEST_PASSED = 0;

    TEST_FAILED = 1;
  }

  optional Code code = 1 [default = TEST_FAILED];
  optional bytes errorMessage = 2;
}