diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8f48d9..5ccb793 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.13)
 
-cmake_policy(SET CMP0077 NEW)
+set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
 
 project(AnimTestbed
         VERSION 0.0.1
@@ -83,6 +83,7 @@ add_executable(runtests)
 target_sources(runtests PRIVATE tests/main.cc tests/SyncTrackTests.cc)
 target_include_directories(
         runtests
+        PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
         ${ThirdPartyIncludeDeps}
 )
 
diff --git a/tests/SyncTrackTests.cc b/tests/SyncTrackTests.cc
index edddcf7..816bef5 100644
--- a/tests/SyncTrackTests.cc
+++ b/tests/SyncTrackTests.cc
@@ -3,3 +3,43 @@
 //
 
 #include "catch.hpp"
+
+#include "SkinnedMesh.h"
+
+TEST_CASE("SyncTrackBlendSimple", "[SyncTrackBlend]") {
+  SyncTrack track_A;
+  track_A.m_num_intervals = 2;
+  track_A.m_duration = 1.0;
+  track_A.m_interval_durations[0] = 0.8;
+  track_A.m_interval_durations[1] = 0.2;
+
+  SyncTrack track_B;
+  track_B.m_num_intervals = 2;
+  track_B.m_duration = 2.0;
+  track_B.m_interval_durations[0] = 0.1;
+  track_B.m_interval_durations[1] = 0.9;
+
+  WHEN("Blending two synctracks with weight 0.") {
+    SyncTrack blended = SyncTrack::Blend(0.f, track_A, track_B);
+
+    THEN ("Result must equal track_A") {
+      REQUIRE(blended.m_duration == track_A.m_duration);
+      REQUIRE(
+          blended.m_interval_durations[0] == track_A.m_interval_durations[0]);
+      REQUIRE(
+          blended.m_interval_durations[1] == track_A.m_interval_durations[1]);
+    }
+  }
+
+  WHEN("Blending two synctracks with weight 1.") {
+    SyncTrack blended = SyncTrack::Blend(1.f, track_A, track_B);
+
+    THEN ("Result must equal track_B") {
+      REQUIRE(blended.m_duration == track_B.m_duration);
+      REQUIRE(
+          blended.m_interval_durations[0] == track_B.m_interval_durations[0]);
+      REQUIRE(
+          blended.m_interval_durations[1] == track_B.m_interval_durations[1]);
+    }
+  }
+}