# Copyright 2022 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/fidl/fidl_ir.gni")
import("//build/fidl/fidl_summary.gni")
import("//build/testing/config.gni")

template("fidl_api_compatibility_test") {
  assert(defined(invoker.target_api_level), "target_api_level is required")
  assert(defined(invoker.golden), "golden is required")
  assert(defined(invoker.current), "current is required")

  policy = "no_breaking_changes"
  if (defined(invoker.policy)) {
    policy = invoker.policy
  }

  # Let command-line build args override values from target declarations.
  if (bless_goldens) {
    policy = "update_golden"
  }

  # Run the test.
  action(target_name) {
    forward_variables_from(invoker, "*", [ "policy" ])

    script = "//sdk/cts/build/scripts/fidl_api_compatibility_test.py"
    stamp_file = "$target_gen_dir/$target_name.verified"

    current_summary = current
    golden_summary = golden

    inputs = [
      current_summary,
      golden_summary,
      "//sdk/cts/build/scripts/plasa_differ.py",
    ]

    outputs = [ stamp_file ]

    args = [
      "--api-level",
      "$target_api_level",
      "--golden",
      rebase_path(golden_summary, root_build_dir),
      "--current",
      rebase_path(current_summary, root_build_dir),
      "--stamp",
      rebase_path(stamp_file, root_build_dir),
      "--fidl_api_diff_path",
      rebase_path("$root_build_dir/host_x64/fidl_api_diff", root_build_dir),
      "--policy",
      policy,
    ]

    warn_on_changes =
        defined(invoker.warn_on_changes) && invoker.warn_on_changes
    if (warn_on_changes) {
      args += [ "--warn_on_changes" ]
    }

    deps += [ "//tools/fidl/fidl_api_diff:host" ]
  }
}