ci: test bazel builds on travis (#18240)

.travis.yml

@@ -53,6 +53,7 @@ env:
     - CI_MODE=docs_test
     - CI_MODE=aio
     - CI_MODE=aio_e2e
+    - CI_MODE=bazel
 
 matrix:
   fast_finish: true

scripts/ci/build.sh

@@ -14,6 +14,9 @@ if [[ ${TRAVIS_TEST_RESULT=0} == 1 ]]; then
   exit 1;
 fi
 
+if [[ ${CI_MODE:-} == "bazel" ]]; then
+  exit 0;
+fi
 
 travisFoldStart "tsc tools"
   $(npm bin)/tsc -p tools

scripts/ci/install.sh

@@ -59,6 +59,20 @@ if [[ ${TRAVIS} && (${CI_MODE} == "aio" || ${CI_MODE} == "aio_e2e" || ${CI_MODE}
   travisFoldEnd "yarn-install.aio"
 fi
 
+# Install bazel
+if [[ ${TRAVIS} && ${CI_MODE} == "bazel" ]]; then
+  travisFoldStart "bazel-install"
+  (
+    mkdir tmp
+    cd tmp
+    curl --location --compressed https://github.com/bazelbuild/bazel/releases/download/0.5.2/bazel-0.5.2-installer-linux-x86_64.sh > bazel-0.5.2-installer-linux-x86_64.sh
+    chmod +x bazel-0.5.2-installer-linux-x86_64.sh
+    ./bazel-0.5.2-installer-linux-x86_64.sh --user
+    cd ..
+    rm -rf tmp
+  )
+  travisFoldEnd "bazel-install"
+fi
 
 # Install Chromium
 if [[ ${CI_MODE} == "js" || ${CI_MODE} == "e2e" || ${CI_MODE} == "e2e_2" || ${CI_MODE} == "aio" || ${CI_MODE} == "aio_e2e" ]]; then

scripts/ci/test-bazel.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+set -u -e -o pipefail
+
+bazel build ...

scripts/ci/test.sh

@@ -46,4 +46,7 @@ case ${CI_MODE} in
   aio_e2e)
     ${thisDir}/test-aio-e2e.sh
     ;;
+  bazel)
+    ${thisDir}/test-bazel.sh
+    ;;
 esac