Merge branch 'stable-3.1'

* stable-3.1:
  Add initial end-to-end functional test scenarios

Change-Id: Icf37d145457de7e96663980207bdc708a8180db4
diff --git a/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.json b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.json
new file mode 100644
index 0000000..e9df002
--- /dev/null
+++ b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.json
@@ -0,0 +1,5 @@
+[
+  {
+    "url": "http://HOSTNAME:HTTP_PORT/a/projects/PROJECT/statistics.git"
+  }
+]
diff --git a/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc-body.json b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc-body.json
new file mode 100644
index 0000000..23bf26c
--- /dev/null
+++ b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc-body.json
@@ -0,0 +1,5 @@
+{
+  "project": "${project}",
+  "branch": "master",
+  "subject": "Change"
+}
diff --git a/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.json b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.json
new file mode 100644
index 0000000..c267ab3
--- /dev/null
+++ b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.json
@@ -0,0 +1,6 @@
+[
+  {
+    "url": "http://HOSTNAME:HTTP_PORT/a/changes/",
+    "project": "_PROJECT"
+  }
+]
diff --git a/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.json b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.json
new file mode 100644
index 0000000..a371757
--- /dev/null
+++ b/src/test/resources/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.json
@@ -0,0 +1,5 @@
+[
+  {
+    "url": "http://HOSTNAME:HTTP_PORT/a/changes/"
+  }
+]
diff --git a/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.scala b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.scala
new file mode 100644
index 0000000..fa43e22
--- /dev/null
+++ b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CheckProjectStatisticsAfterGc.scala
@@ -0,0 +1,41 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+
+package com.ericsson.gerrit.plugins.gcconductor.scenarios
+
+import com.google.gerrit.scenarios.ProjectSimulation
+import io.gatling.core.Predef._
+import io.gatling.core.feeder.FeederBuilder
+import io.gatling.core.structure.ScenarioBuilder
+import io.gatling.http.Predef._
+
+class CheckProjectStatisticsAfterGc extends ProjectSimulation {
+  private val data: FeederBuilder = jsonFile(resource).convert(keys).queue
+
+  def this(default: String) {
+    this()
+    this.default = default
+  }
+
+  val test: ScenarioBuilder = scenario(unique)
+    .feed(data)
+    .exec(http(unique).get("${url}")
+      .check(regex("\"number_of_loose_objects\": (\\d+),")
+        .is("0")))
+
+  setUp(
+    test.inject(
+      atOnceUsers(1)
+    )).protocols(httpProtocol)
+}
diff --git a/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.scala b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.scala
new file mode 100644
index 0000000..a61b376
--- /dev/null
+++ b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/CreateChangesTriggeringGc.scala
@@ -0,0 +1,88 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+
+package com.ericsson.gerrit.plugins.gcconductor.scenarios
+
+import com.google.gerrit.scenarios._
+import io.gatling.core.Predef.{atOnceUsers, nothingFor, _}
+import io.gatling.core.feeder.FeederBuilder
+import io.gatling.core.structure.ScenarioBuilder
+import io.gatling.http.Predef._
+
+import scala.concurrent.duration._
+
+class CreateChangesTriggeringGc extends GerritSimulation {
+  private val data: FeederBuilder = jsonFile(resource).convert(keys).circular
+  private val default: String = name
+  private val numberKey = "_number"
+
+  private lazy val DefaultSecondsToNextEvaluation = 60
+  private lazy val DefaultSecondsToNextGcDequeue = 60
+  private lazy val DefaultLooseObjectsToEnqueueGc = 400
+  private lazy val LooseObjectsPerChange = 2
+  private lazy val ChangesPerSecond = 4
+  private val ChangesForLastEvaluation = 1
+
+  private lazy val secondsForLastEvaluation = SecondsPerWeightUnit * 2
+  private lazy val secondsForLastGcExecution = secondsForLastEvaluation * 2
+  private lazy val changesToEnqueueGc = DefaultLooseObjectsToEnqueueGc / LooseObjectsPerChange
+  private lazy val secondsToChanges = changesToEnqueueGc / ChangesPerSecond
+  private lazy val maxSecondsToEnqueueGc = secondsToChanges + DefaultSecondsToNextEvaluation + secondsForLastEvaluation
+  private lazy val maxSecondsToExecuteGc = maxSecondsToEnqueueGc + DefaultSecondsToNextGcDequeue + secondsForLastGcExecution
+
+  override def relativeRuntimeWeight: Int = maxSecondsToExecuteGc / SecondsPerWeightUnit
+
+  private val test: ScenarioBuilder = scenario(unique)
+    .feed(data)
+    .exec(httpRequest
+      .body(ElFileBody(body)).asJson
+      .check(regex("\"" + numberKey + "\":(\\d+),").saveAs(numberKey)))
+    .exec(session => {
+      deleteChanges.upToNumber = session(numberKey).as[Int]
+      session
+    })
+
+  private val createProject = new CreateProject(default)
+  private val checkStatsAfterGc = new CheckProjectStatisticsAfterGc(default)
+  private val deleteChanges = new DeleteChangesAfterGc
+  private val deleteProject = new DeleteProject(default)
+
+  setUp(
+    createProject.test.inject(
+      nothingFor(stepWaitTime(createProject) seconds),
+      atOnceUsers(1)
+    ),
+    test.inject(
+      nothingFor(stepWaitTime(this) seconds),
+      constantUsersPerSec(ChangesPerSecond) during (secondsToChanges seconds),
+      nothingFor(DefaultSecondsToNextEvaluation seconds),
+      nothingFor(secondsForLastEvaluation / 2 seconds),
+      atOnceUsers(ChangesForLastEvaluation),
+      nothingFor(secondsForLastEvaluation / 2 seconds)
+    ),
+    checkStatsAfterGc.test.inject(
+      nothingFor(stepWaitTime(checkStatsAfterGc) seconds),
+      atOnceUsers(1)
+    ),
+    deleteChanges.test.inject(
+      nothingFor(stepWaitTime(deleteChanges) seconds),
+      constantUsersPerSec(ChangesPerSecond) during (secondsToChanges seconds),
+      atOnceUsers(ChangesForLastEvaluation)
+    ),
+    deleteProject.test.inject(
+      nothingFor(stepWaitTime(deleteProject) seconds),
+      atOnceUsers(1)
+    ),
+  ).protocols(httpProtocol)
+}
diff --git a/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.scala b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.scala
new file mode 100644
index 0000000..d72f635
--- /dev/null
+++ b/src/test/scala/com/ericsson/gerrit/plugins/gcconductor/scenarios/DeleteChangesAfterGc.scala
@@ -0,0 +1,42 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// 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.
+
+package com.ericsson.gerrit.plugins.gcconductor.scenarios
+
+import com.google.gerrit.scenarios.GerritSimulation
+import io.gatling.core.Predef._
+import io.gatling.core.feeder.FeederBuilder
+import io.gatling.core.structure.ScenarioBuilder
+import io.gatling.http.Predef.http
+
+class DeleteChangesAfterGc extends GerritSimulation {
+  private val data: FeederBuilder = jsonFile(resource).convert(keys).circular
+  private val numberKey = "number"
+  var upToNumber = 1
+
+  private lazy val OrderOfChangesToDelete = 200
+  private lazy val PerSecond = 4
+  private lazy val secondsToDeleted = OrderOfChangesToDelete / PerSecond
+
+  override def relativeRuntimeWeight: Int = (secondsToDeleted + SecondsPerWeightUnit) / SecondsPerWeightUnit
+
+  val test: ScenarioBuilder = scenario(unique)
+    .feed(data)
+    .exec(session => {
+      val numbered: Session = session.set(numberKey, upToNumber)
+      upToNumber -= 1
+      numbered
+    })
+    .exec(http(unique).delete("${url}${" + numberKey + "}"))
+}