# Copyright 2016 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/dart/dart_library.gni")
import("//build/dart/toolchain.gni")

# Defines a Dart test suite
#
# Parameters
#
#   sources (optional)
#     The list of test files, which must be within source_dir.
#     Note: this parameter will soon be mandatory (TO-776).
#
#   source_dir (optional)
#     Directory containing the test sources. Defaults to "test".
#
#   deps (optional)
#     List of labels for Dart libraries this suite depends on.
#
#   disable_analysis (optional)
#     Prevents analysis from being run on this target.
#
# Example of usage:
#
#   dart_test("baz_test") {
#     source_dir = "."
#     deps = [
#       "//foo/baz",
#       "//third_party/dart-pkg/pub/test",
#     ]
#   }
template("dart_test") {
  main_target_name = target_name
  library_target_name = "${target_name}_library"

  sources_dir = "test"
  if (defined(invoker.source_dir)) {
    sources_dir = invoker.source_dir
  }

  dart_library(library_target_name) {
    forward_variables_from(invoker,
                           [
                             "deps",
                             "disable_analysis",
                           ])

    infer_package_name = true

    source_dir = sources_dir

    if (defined(invoker.sources)) {
      sources = invoker.sources
    }
  }

  dart_target_gen_dir =
      get_label_info(":bogus($dart_toolchain)", "target_gen_dir")
  dot_packages_file = "$dart_target_gen_dir/$library_target_name.packages"

  fuchsia_tester_label = "//third_party/dart-pkg/git/flutter/packages/flutter_tools:fuchsia_tester($host_toolchain)"
  fuchsia_tester_out_dir = get_label_info(fuchsia_tester_label, "root_out_dir")
  fuchsia_tester_bin = "$fuchsia_tester_out_dir/dart-tools/fuchsia_tester"

  flutter_shell_label = "//third_party/flutter/shell/testing/($host_toolchain)"
  flutter_shell_out_dir = get_label_info(flutter_shell_label, "root_out_dir")
  flutter_shell_bin = "$flutter_shell_out_dir/flutter_tester"

  if (current_toolchain == host_toolchain) {
    invocation_file = "$root_out_dir/$target_name"
  } else {
    invocation_file = "$target_gen_dir/$target_name"
  }

  action(main_target_name) {
    script = "//build/dart/gen_test_invocation.py"

    testonly = true

    outputs = [
      invocation_file,
    ]

    args = [
      "--out",
      rebase_path(invocation_file),
      "--source-dir",
      rebase_path(sources_dir),
      "--dot-packages",
      rebase_path(dot_packages_file),
      "--test-runner",
      rebase_path(fuchsia_tester_bin),
      "--flutter-shell",
      rebase_path(flutter_shell_bin),
    ]

    deps = [
      ":$library_target_name",
      flutter_shell_label,
      fuchsia_tester_label,
    ]
  }
}