update_engine: Make InstallPlan's dump nicer

Its really hard to read anything out of the current InstallPlan's
logs. This CL makes it a bit more structured so it can be read easier.

Also added a few other properties of InstallPlan that were missing in
the Dump().

Added unittest for it too.

BUG=b:171829801
TEST=cros_workon_make --board reef --test update_engine

Change-Id: Iaa327e875877e9645ef8f0af875c280e11ee485d
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2558933
Tested-by: Amin Hassani <ahassani@chromium.org>
Auto-Submit: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
Commit-Queue: Jae Hoon Kim <kimjae@chromium.org>
diff --git a/payload_consumer/install_plan_unittest.cc b/payload_consumer/install_plan_unittest.cc
new file mode 100644
index 0000000..2ca8d81
--- /dev/null
+++ b/payload_consumer/install_plan_unittest.cc
@@ -0,0 +1,82 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include <gtest/gtest.h>
+
+#include "update_engine/payload_consumer/install_plan.h"
+
+namespace chromeos_update_engine {
+
+TEST(InstallPlanTest, Dump) {
+  InstallPlan install_plan{
+      .download_url = "foo-download-url",
+      .version = "foo-version",
+      .payloads = {{
+          .payload_urls = {"url1", "url2"},
+          .metadata_signature = "foo-signature",
+          .hash = {0xb2, 0xb3},
+          .fp = "foo-fp",
+          .app_id = "foo-app-id",
+      }},
+      .source_slot = BootControlInterface::kInvalidSlot,
+      .target_slot = BootControlInterface::kInvalidSlot,
+      .partitions = {{
+          .name = "foo-partition_name",
+          .source_path = "foo-source-path",
+          .source_hash = {0xb1, 0xb2},
+          .target_path = "foo-target-path",
+          .target_hash = {0xb3, 0xb4},
+          .postinstall_path = "foo-path",
+          .filesystem_type = "foo-type",
+      }},
+  };
+
+  EXPECT_EQ(install_plan.ToString(),
+            R"(type: new_update
+version: foo-version
+source_slot: INVALID
+target_slot: INVALID
+initial url: foo-download-url
+hash_checks_mandatory: false
+powerwash_required: false
+switch_slot_on_reboot: true
+run_post_install: true
+is_rollback: false
+rollback_data_save_requested: false
+write_verity: true
+Partition: foo-partition_name
+  source_size: 0
+  source_path: foo-source-path
+  source_hash: B1B2
+  target_size: 0
+  target_path: foo-target-path
+  target_hash: B3B4
+  run_postinstall: false
+  postinstall_path: foo-path
+  filesystem_type: foo-type
+Payload: 0
+  urls: (url1,url2)
+  size: 0
+  metadata_size: 0
+  metadata_signature: foo-signature
+  hash: B2B3
+  type: unknown
+  fingerprint: foo-fp
+  app_id: foo-app-id
+  already_applied: false)");
+}
+
+}  // namespace chromeos_update_engine