# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/testing/zbi_test_success.gni")
import("//build/zbi/zbi.gni")
import("//build/zbi/zbi_input.gni")

# Composes a test zbi out of Zircon artifacts.
#
# The $target_name target is a group() that holds the metadata and is what
# should be used in deps.  The actual zbi() target is defined as
# "$target_name.zbi" so that e.g. get_target_outputs(":$target_name.zbi")
# can be used.
#
# Parameters
#
#   args (optional)
#     [list of strings] Command line arguments for the resulting zbi.
#
#   device_types
#     [list of strings] Devices the test should run on.
#     Allowable values are those among the entries in
#     //build/testing/platforms.gni; others will be ignored.
#     Defaults to [ "QEMU" ].
#
#   replace, complete, compress
#     See //build/zbi/zbi.gni.
template("zbi_test") {
  main_target = target_name
  input_target = "${target_name}_input"
  zbi_target = "${target_name}.zbi"

  not_needed(invoker,
             [
               "qemu_kernel",
               "timeout",
             ])

  group_deps = []

  entries = []
  if (defined(invoker.args)) {
    entries += invoker.args
  }
  entries += [ "userboot.shutdown" ]

  zbi_input(input_target) {
    forward_variables_from(invoker, [ "deps" ])
    testonly = true
    type = "cmdline"
    args = []
    foreach(entry, entries) {
      args += [ "--entry=$entry" ]
    }
  }

  zbi(zbi_target) {
    testonly = true
    data_deps = []
    forward_variables_from(invoker,
                           [
                             "cpu",
                             "compress",
                             "data_deps",
                             "output_dir",
                             "output_extension",
                             "output_name",
                             "visibility",
                           ])
    if (defined(visibility)) {
      visibility += [ ":$main_target" ]
    }
    if (!defined(output_name)) {
      output_name = main_target
    }
    deps = invoker.deps + [ ":$input_target" ]
    if (defined(invoker.qemu_kernel)) {
      data_deps += [ invoker.qemu_kernel ]
    }

    _output_dir = target_out_dir
    if (defined(output_dir)) {
      _output_dir = output_dir
    }
    _output_extension = "zbi"
    if (defined(output_extension)) {
      _output_extension = output_extension
    }
    _output_file = "${_output_dir}/${output_name}"
    if (_output_extension != "") {
      _output_file += ".${_output_extension}"
    }

    metadata = {
      images = [
        {
          label = get_label_info(":$zbi_target", "label_with_toolchain")
          name = output_name
          path = rebase_path(_output_file, root_build_dir)
          type = "zbi"
          cpu = current_cpu
          compressed =
              !defined(invoker.compressed) ||
              (invoker.compressed != false && invoker.compressed != "none")
          if (defined(testonly) && testonly) {
            testonly = true
          }
          forward_variables_from(invoker, [ "tags" ])
        },
      ]

      # Provide metadata so that a zbi() target can also act as if it were a
      # zbi_input() with type == "zbi" and $sources of this target's $outputs.
      # Thus a zbi() target can be a dependency of another zbi() target to
      # combine them without requiring an intervening zbi_input() target.
      zbi_input_barrier = []
      zbi_input_args = [
        "--type=container",
        rebase_path(_output_file, root_build_dir),
      ]
    }
  }

  group_deps += [ ":$zbi_target" ]

  output_file = target_name
  if (defined(invoker.output_name)) {
    output_file = invoker.output_name
  }
  if (defined(invoker.output_extension)) {
    if (invoker.output_extension != "") {
      output_file += ".${invoker.output_extension}"
    }
  } else {
    output_file += ".zbi"
  }
  if (defined(invoker.output_dir)) {
    output_file = "${invoker.output_dir}/$output_file"
  } else {
    output_file = "$target_out_dir/$output_file"
  }

  if (defined(invoker.device_types)) {
    _device_types = invoker.device_types
  } else {
    _device_types = [
      "AEMU",
      "QEMU",
    ]
  }

  group(main_target) {
    forward_variables_from(invoker,
                           [
                             "assert_no_deps",
                             "visibility",
                           ])

    testonly = true

    public_deps = group_deps

    metadata = {
      # Used by the zbi() template to ensure that this is not included into
      # any ZBI that depends on this target.
      zbi_input_barrier = []

      # Used by build_api_module("zbi_tests") in //BUILD.gn
      zbi_tests = [
        {
          cpu = current_cpu
          disabled = defined(invoker.tags) && invoker.tags + [ "disabled" ] -
                                              [ "disabled" ] != invoker.tags
          name = main_target
          label = get_label_info(":$target_name", "label_with_toolchain")
          path = rebase_path(output_file, root_build_dir)
          bootserver_netboot = [ "--boot" ]
          success_string = zbi_test_success_string
          device_types = _device_types
          if (defined(invoker.qemu_kernel)) {
            assert(device_types == [ "QEMU" ],
                   "`qemu_kernel` tests can only run on QEMU")
            qemu_kernel_label =
                get_label_info(invoker.qemu_kernel, "label_with_toolchain")
          }
          forward_variables_from(invoker, [ "timeout" ])
        },
      ]
    }
  }
}