testing: run test in simulated appengine environment (#2145)

.travis.yml

@@ -11,14 +11,19 @@ matrix:
   include:
   - go: 1.10.x
     env: RUN386=1
+  - go: 1.9.x
+    env: GAE=1
+
 
 go_import_path: google.golang.org/grpc
 
 before_install:
   - if [[ -n "$RUN386" ]]; then export GOARCH=386; fi
   - if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh -install || exit 1; fi
+  - if [[ "$GAE" = 1 ]]; then source ./install_gae.sh || exit 1; fi
 
 script:
   - if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh || exit 1; fi
+  - if [[ "$GAE" = 1 ]]; then make testappengine || exit 1; exit 0; fi
   - make test || exit 1
   - if [[ "$GOARCH" != "386" ]]; then make testrace; fi

Makefile

@@ -9,6 +9,9 @@ updatedeps:
 testdeps:
 	go get -d -v -t google.golang.org/grpc/...
 
+testgaedeps:
+	goapp get -d -v -t -tags 'appengine appenginevm' google.golang.org/grpc/...
+
 updatetestdeps:
 	go get -d -v -t -u -f google.golang.org/grpc/...
 
@@ -31,6 +34,9 @@ test: testdeps
 testrace: testdeps
 	go test -race -cpu 1,4 -timeout 7m google.golang.org/grpc/...
 
+testappengine: testgaedeps
+	goapp test -cpu 1,4 -timeout 5m google.golang.org/grpc/...
+
 clean:
 	go clean -i google.golang.org/grpc/...
 
@@ -39,6 +45,7 @@ clean:
 	deps \
 	updatedeps \
 	testdeps \
+	testgaedeps \
 	updatetestdeps \
 	build \
 	proto \

install_gae.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+TMP=$(mktemp -d /tmp/sdk.XXX) \
+&& curl -o $TMP.zip "https://storage.googleapis.com/appengine-sdks/featured/go_appengine_sdk_linux_amd64-1.9.64.zip" \
+&& unzip -q $TMP.zip -d $TMP \
+&& export PATH="$PATH:$TMP/go_appengine"