1 files changed, 66 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/shell/ExecutionStatisticsTestUtil.java b/src/test/java/com/google/devtools/build/lib/shell/ExecutionStatisticsTestUtil.java
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index 0000000000..e2aafd5252
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+++ b/src/test/java/com/google/devtools/build/lib/shell/ExecutionStatisticsTestUtil.java
@@ -0,0 +1,66 @@
+// Copyright 2017 The Bazel 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.
+
+package com.google.devtools.build.lib.shell;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth8.assertThat;
+
+import java.io.IOException;
+import java.time.Duration;
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Utilities to assist with testing execution statistics generated via the {@code process-wrapper}
+ * and {@code linux-sandbox} tools.
+ */
+public class ExecutionStatisticsTestUtil {
+  /**
+   * Executes a command and checks that the execution statistics timing info for that command
+   * satisfy certain constraints.
+   *
+   * @param userTimeToSpend a lower bound for how much CPU user execution time was expected
+   * @param systemTimeToSpend a lower bound for how much CPU system execution time was expected
+   * @param fullCommandLine the command to execute, including any wrappers used (like linux-sandbox)
+   * @param statisticsFilePath where the execution statistics file will be generated (to be read)
+   */
+  public static void executeCommandAndCheckStatisticsAboutCpuTimeSpent(
+      Duration userTimeToSpend,
+      Duration systemTimeToSpend,
+      List<String> fullCommandLine,
+      String statisticsFilePath)
+      throws CommandException, IOException {
+    Duration userTimeLowerBound = userTimeToSpend;
+    Duration userTimeUpperBound = userTimeToSpend.plusSeconds(2);
+    Duration systemTimeLowerBound = systemTimeToSpend;
+    Duration systemTimeUpperBound = systemTimeToSpend.plusSeconds(2);
+
+    Command command = new Command(fullCommandLine.toArray(new String[0]));
+    CommandResult commandResult = command.execute();
+    assertThat(commandResult.getTerminationStatus().success()).isTrue();
+
+    Optional<ExecutionStatistics.ResourceUsage> resourceUsage =
+        ExecutionStatistics.getResourceUsage(statisticsFilePath);
+    assertThat(resourceUsage).isPresent();
+
+    Duration userTime = resourceUsage.get().getUserExecutionTime();
+    assertThat(userTime).isAtLeast(userTimeLowerBound);
+    assertThat(userTime).isAtMost(userTimeUpperBound);
+
+    Duration systemTime = resourceUsage.get().getSystemExecutionTime();
+    assertThat(systemTime).isAtLeast(systemTimeLowerBound);
+    assertThat(systemTime).isAtMost(systemTimeUpperBound);
+  }
+}