From 99457c92d78090759166b2710ba2bf4d2faa122e Mon Sep 17 00:00:00 2001
From: Tian Lun Lee <tianlun@google.com>
Date: Thu, 19 Jul 2018 15:26:49 -0400
Subject: [PATCH] Add build test for Flutter codelabs

---
 .travis.yml                    |  1 +
 dev/bots/flutter_build_test.sh | 43 ++++++++++++++++++++++++++++++++++
 dev/bots/travis_script.sh      |  6 ++++-
 3 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100755 dev/bots/flutter_build_test.sh

diff --git a/.travis.yml b/.travis.yml
index 565fee015c..016ab1b271 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ env:
   - SHARD=tests
   - SHARD=docs
   - SHARD=build_and_deploy_gallery
+  - SHARD=flutter_build_test
 matrix:
   exclude:
   - os: osx
diff --git a/dev/bots/flutter_build_test.sh b/dev/bots/flutter_build_test.sh
new file mode 100755
index 0000000000..7d4e8509ed
--- /dev/null
+++ b/dev/bots/flutter_build_test.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+readonly SCRIPTS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+readonly ROOT_DIR="$SCRIPTS_DIR/.."
+
+function is_expected_failure() {
+  # A test target was specified with the 'build' command.
+  grep --quiet "is not configured for Running" "$1"
+}
+
+# Navigate to codelab and attempt to build 104-complete
+echo "git clone https://github.com/material-components/material-components-flutter-codelabs.git"
+git clone https://github.com/material-components/material-components-flutter-codelabs.git
+
+echo "cd material-components-flutter-codelabs/mdc_100_series/"
+cd material-components-flutter-codelabs/mdc_100_series/
+
+echo "git checkout 104-complete"
+git checkout 104-complete
+
+log_file="build_log_for_104_complete.txt"
+build_command="flutter build bundle"
+
+all_builds_ok=1
+echo "$build_command"
+$build_command 2>&1 | tee "$log_file"
+
+if [ ${PIPESTATUS[0]} -eq 0 ] || is_expected_failure "$log_file"; then
+    rm "$log_file"
+else
+    all_builds_ok=0
+    echo
+    echo "Log left in $log_file."
+    echo
+fi
+
+# If any build failed, exit with a failure exit status so continuous integration
+# tools can react appropriately.
+if [ "$all_builds_ok" -eq 1 ]; then
+    exit 0
+else
+    exit 1
+fi
diff --git a/dev/bots/travis_script.sh b/dev/bots/travis_script.sh
index 355218b10a..717a02b011 100755
--- a/dev/bots/travis_script.sh
+++ b/dev/bots/travis_script.sh
@@ -59,5 +59,9 @@ elif [ "$SHARD" = "docs" ]; then
     ./dev/bots/docs.sh
   fi
 else
-  dart ./dev/bots/test.dart
+  if [ "$SHARD" = "flutter_build_test" ]; then
+    ./dev/bots/flutter_build_test.sh
+  else
+    dart ./dev/bots/test.dart
+  fi
 fi