From ddc4d76c41abfdc53609c5f7f8f4f8a9089a5b43 Mon Sep 17 00:00:00 2001
From: Nik Clayton <nik@ngo.org.uk>
Date: Tue, 28 Feb 2023 21:28:05 +0100
Subject: [PATCH] Lazily load activities in Robolectric tests (#3397)

Not all Robolectric tests interact with activities, so lazy loading the activity can speed them up.

I benchmarked the impact with gradle-profiler. Each test run performed 6 warmup runs, and then 10 benchmarked runs with and without this change.

Without this change (all values rounded to nearest second):
Mean: 151
Median: 149
P75: 157
StdDev: 10

With this change:
Mean: 127
Median: 125
P75: 130
StdDev: 7

So a ~ 18% reduction in median and P75 times,
---
 app/build.gradle | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/build.gradle b/app/build.gradle
index 3ca787049..d1259f72e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -72,6 +72,7 @@ android {
         }
         unitTests.all {
             systemProperty 'robolectric.logging.enabled', 'true'
+            systemProperty 'robolectric.lazyload', 'ON'
         }
     }
     sourceSets {