Add support for kokoro and bazel continuous integration. (#19)

.gitignore

@@ -1,3 +1,6 @@
+bazel-*
+.kokoro-ios-runner
+
 # Xcode
 #
 # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore

.kokoro

@@ -0,0 +1,60 @@
+#!/bin/bash
+#
+# Copyright 2017-present The Material Foundation Authors. All Rights Reserved.
+#
+# 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.
+
+# Fail on any error.
+set -e
+
+# Display commands to stderr.
+set -x
+
+KOKORO_RUNNER_VERSION="v3.*"
+
+fix_bazel_imports() {
+  if [ -z "$KOKORO_BUILD_NUMBER" ]; then
+    tests_dir_prefix=""
+  else
+    tests_dir_prefix="github/repo/"
+  fi
+
+  rewrite_source() {
+    find "${stashed_dir}${tests_dir_prefix}tests/unit" -type f -name '*.swift' -exec sed -i '' -E "$1" {} + || true
+  }
+
+  stashed_dir=""
+  rewrite_source "s/import MDFTextAccessibility/import _MDFTextAccessibility/"
+  stashed_dir="$(pwd)/"
+  reset_imports() {
+    # Undoes our source changes from above.
+    rewrite_source "s/import _MDFTextAccessibility/import MDFTextAccessibility/"
+  }
+  trap reset_imports EXIT
+}
+
+if [ ! -d .kokoro-ios-runner ]; then
+  git clone https://github.com/material-foundation/kokoro-ios-runner.git .kokoro-ios-runner
+fi
+
+pushd .kokoro-ios-runner
+git fetch > /dev/null
+TAG=$(git tag --sort=v:refname -l "$KOKORO_RUNNER_VERSION" | tail -n1)
+git checkout "$TAG" > /dev/null
+popd
+
+fix_bazel_imports
+
+./.kokoro-ios-runner/bazel.sh test //:UnitTests 8.1.0
+
+echo "Success!"

BUILD

@@ -0,0 +1,55 @@
+# Copyright 2017-present The Material Foundation Authors. All Rights Reserved.
+#
+# 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.
+
+load("@bazel_ios_warnings//:strict_warnings_objc_library.bzl", "strict_warnings_objc_library")
+load("@build_bazel_rules_apple//apple:swift.bzl", "swift_library")
+load("@build_bazel_rules_apple//apple:ios.bzl", "ios_unit_test")
+
+licenses(["notice"])  # Apache 2.0
+
+exports_files(["LICENSE"])
+
+strict_warnings_objc_library(
+    name = "MDFTextAccessibility",
+    srcs = glob([
+        "src/*.m",
+        "src/private/*.m",
+    ]),
+    hdrs = glob([
+        "src/*.h",
+        "src/private/*.h",
+    ]),
+    enable_modules = 1,
+    includes = ["src"],
+    visibility = ["//visibility:public"],
+)
+
+swift_library(
+    name = "UnitTestsSwiftLib",
+    srcs = glob([
+        "tests/unit/*.swift",
+    ]),
+    resources = glob(["tests/resources/*"]),
+    deps = [":MDFTextAccessibility"],
+    visibility = ["//visibility:private"],
+)
+
+ios_unit_test(
+    name = "UnitTests",
+    deps = [
+      ":UnitTestsSwiftLib"
+    ],
+    timeout = "short",
+    visibility = ["//visibility:private"],
+)

WORKSPACE

@@ -0,0 +1,25 @@
+# Copyright 2017-present The Material Foundation Authors. All Rights Reserved.
+#
+# 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.
+
+git_repository(
+    name = "build_bazel_rules_apple",
+    remote = "https://github.com/bazelbuild/rules_apple.git",
+    commit = "7ea0557",
+)
+
+git_repository(
+    name = "bazel_ios_warnings",
+    remote = "https://github.com/material-foundation/bazel_ios_warnings.git",
+    tag = "v1.0.1",
+)