tools/devshell/tests/subcommands/fx_emu_test

#!/bin/bash
# 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.

### Test fx emu

BT_FILE_DEPS=(
  "scripts/fx"
  "tools/devshell/emu"
  "tools/devshell/lib/fvm.sh"
  "tools/devshell/lib/fx-cmd-locator.sh"
  "tools/devshell/lib/fx-optional-features.sh"
  "tools/devshell/lib/image_build_vars.sh"
  "tools/devshell/lib/platform.sh"
  "tools/devshell/lib/vars.sh"
)

declare fx

BT_SET_UP() {
  source "${BT_TEMP_DIR}/tools/devshell/lib/vars.sh"
  source "${BT_TEMP_DIR}/tools/devshell/tests/lib/fuchsia-mock.sh"
  fx="$(btf::setup_fx)"
  btf::make_mock "${PREBUILT_AEMU_DIR}/emulator"
  btf::make_mock "${BT_TEMP_DIR}/out/default/image_paths.sh"
  btf::make_zircontools_mock "zbi"
}

# Test that -c arguments are added to the end of the kernel command line.
TEST_kernel_cmdline_append() {
  BT_EXPECT ${fx} emu --headless -a off --experiment-arm64 -c foobar
  source "${PREBUILT_AEMU_DIR}/emulator.mock_state"

  # The last arg will contain the kernel command line string.
  local cmdline_string="${BT_MOCK_ARGS[${#BT_MOCK_ARGS[@]}-1]}"

  # Convert the string to an array so we can easily examine the last element.
  local cmdline_array=($cmdline_string)
  BT_EXPECT_EQ "${cmdline_array[${#cmdline_array[@]}-1]}" "foobar"
}

# Test that -A argument works.
TEST_arch_arm64() {
  BT_EXPECT ${fx} emu --headless -a off --experiment-arm64 -A arm64
  source "${PREBUILT_AEMU_DIR}/emulator.mock_state"

  local machine_arg="$(get_machine_arg)"
  BT_EXPECT_EQ "${machine_arg}" "virt"
}

# Test that -A argument works.
TEST_arch_x64() {
  BT_EXPECT ${fx} emu --headless -a off -A x64
  source "${PREBUILT_AEMU_DIR}/emulator.mock_state"

  local machine_arg="$(get_machine_arg)"
  BT_EXPECT_EQ "${machine_arg}" "q35"
}

get_machine_arg() {
  for i in "${!BT_MOCK_ARGS[@]}"; do
    if [[ "${BT_MOCK_ARGS[$i]}" == "-machine" ]]; then
      echo ${BT_MOCK_ARGS[(($i + 1))]}
      return
    fi
  done
  echo "invalid"
}

BT_RUN_TESTS "$@"