chore: fix buildpack integration tests (#198)

Author: garethgeorge

invoker/conformance/buildpack_pom.xml

@@ -26,12 +26,12 @@
     <dependency>
       <groupId>com.google.cloud.functions</groupId>
       <artifactId>functions-framework-api</artifactId>
-      <version>0.0.0-SNAPSHOT</version>
+      <version>FRAMEWORK-API-VERSION</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud.functions.invoker</groupId>
       <artifactId>java-function-invoker</artifactId>
-      <version>0.0.0-SNAPSHOT</version>
+      <version>INVOKER-VERSION</version>
     </dependency>
     <dependency>
       <groupId>com.google.code.gson</groupId>

invoker/conformance/prerun.sh

@@ -27,13 +27,26 @@ mkdir /tmp/tests
 
 cp -r $REPO_ROOT/invoker/conformance /tmp/tests
 
-cd $REPO_ROOT/invoker
-mvn versions:set -DnewVersion=0.0.0-SNAPSHOT -DprocessAllModules=true
+function get_mvn_version() {
+  mvn -q \
+    -Dexec.executable=echo \
+    -Dexec.args='${project.version}' \
+    --non-recursive \
+    exec:exec
+}
+
+# Must first install a local version of the API package
+cd $REPO_ROOT/functions-framework-api 
 mvn install -Dmaven.repo.local=/tmp/tests/conformance/artifacts
+FRAMEWORK_API_VERSION=$(get_mvn_version)
 
-cd $REPO_ROOT/functions-framework-api 
-mvn versions:set -DnewVersion=0.0.0-SNAPSHOT -DprocessAllModules=true
+# Build invoker packages against the latest API package
+cd $REPO_ROOT/invoker
 mvn install -Dmaven.repo.local=/tmp/tests/conformance/artifacts
+INVOKER_VERSION=$(get_mvn_version)
 
 rm /tmp/tests/conformance/pom.xml
 mv /tmp/tests/conformance/buildpack_pom.xml /tmp/tests/conformance/pom.xml
+
+sed -i "s/FRAMEWORK-API-VERSION/${FRAMEWORK_API_VERSION}/g" /tmp/tests/conformance/pom.xml
+sed -i "s/INVOKER-VERSION/${INVOKER_VERSION}/g" /tmp/tests/conformance/pom.xml