diff --git a/src/transport/tests/BUILD.gn b/src/transport/tests/BUILD.gn
index 010c8dbc8bfc1a..1d7e58d861e55b 100644
--- a/src/transport/tests/BUILD.gn
+++ b/src/transport/tests/BUILD.gn
@@ -12,54 +12,58 @@
 #See the License for the specific language governing permissions and
 #limitations under the License.
 
-import("//build_overrides/build.gni") import("//build_overrides/chip.gni") import("//build_overrides/nlunit_test.gni")
+import("//build_overrides/build.gni")
+import("//build_overrides/chip.gni")
+import("//build_overrides/nlunit_test.gni")
 
-    import("${chip_root}/build/chip/chip_test_suite.gni")
+import("${chip_root}/build/chip/chip_test_suite.gni")
+source_set("helpers") {
+  sources = [
+    "LoopbackTransportManager.cpp",
+    "LoopbackTransportManager.h",
+    "UDPTransportManager.cpp",
+    "UDPTransportManager.h",
+  ]
 
-        source_set("helpers"){ sources =
-                                   [
-                                       "LoopbackTransportManager.cpp",
-                                       "LoopbackTransportManager.h",
-                                       "UDPTransportManager.cpp",
-                                       "UDPTransportManager.h",
-                                   ]
+  public_deps = [
+    "${chip_root}/src/transport:transport",
+    "${chip_root}/src/transport/raw",
+    "${chip_root}/src/transport/raw/tests:helpers",
+  ]
+}
 
-                               public_deps =
-                                   [
-                                       "${chip_root}/src/transport:transport",
-                                       "${chip_root}/src/transport/raw",
-                                       "${chip_root}/src/transport/raw/tests:helpers",
-                                   ] }
+chip_test_suite_using_nltest("tests") {
+  output_name = "libTransportLayerTests"
 
-chip_test_suite_using_nltest("tests"){ output_name = "libTransportLayerTests"
+  test_sources = [
+    "TestCryptoContext.cpp",
+    "TestGroupMessageCounter.cpp",
+    "TestPeerConnections.cpp",
+    "TestPeerMessageCounter.cpp",
+    "TestSecureSession.cpp",
+    "TestSessionManager.cpp",
+    "TestSessionManagerDispatch.cpp",
+  ]
 
-                                       test_sources =
-                                           [
-                                               "TestCryptoContext.cpp",
-                                               "TestGroupMessageCounter.cpp",
-                                               "TestPeerConnections.cpp",
-                                               "TestPeerMessageCounter.cpp",
-                                               "TestSecureSession.cpp",
-                                               "TestSessionManager.cpp",
-                                               "TestSessionManagerDispatch.cpp",
-                                           ]
+  if (chip_device_platform != "mbed" && chip_device_platform != "efr32" &&
+      chip_device_platform != "esp32" && chip_device_platform != "nrfconnect" &&
+      chip_device_platform != "nxp") {
+    test_sources += [ "TestSecureSessionTable.cpp" ]
+  }
 
-                                       if (chip_device_platform != "mbed" && chip_device_platform != "efr32" &&
-                                           chip_device_platform != "esp32" && chip_device_platform != "nrfconnect" &&
-                                           chip_device_platform != "nxp"){ test_sources += ["TestSecureSessionTable.cpp"] }
+  cflags = [ "-Wconversion" ]
 
-                                       cflags = ["-Wconversion"]
-
-                                       public_deps = [
-                                           "${chip_root}/src/credentials",
-                                           "${chip_root}/src/credentials/tests:cert_test_vectors",
-                                           "${chip_root}/src/inet/tests:helpers",
-                                           "${chip_root}/src/lib/core",
-                                           "${chip_root}/src/lib/support",
-                                           "${chip_root}/src/lib/support:testing",
-                                           "${chip_root}/src/lib/support:testing_nlunit",
-                                           "${chip_root}/src/protocols",
-                                           "${chip_root}/src/transport",
-                                           "${chip_root}/src/transport/tests:helpers",
-                                           "${nlunit_test_root}:nlunit-test",
-                                       ] }
+  public_deps = [
+    "${chip_root}/src/credentials",
+    "${chip_root}/src/credentials/tests:cert_test_vectors",
+    "${chip_root}/src/inet/tests:helpers",
+    "${chip_root}/src/lib/core",
+    "${chip_root}/src/lib/support",
+    "${chip_root}/src/lib/support:testing",
+    "${chip_root}/src/lib/support:testing_nlunit",
+    "${chip_root}/src/protocols",
+    "${chip_root}/src/transport",
+    "${chip_root}/src/transport/tests:helpers",
+    "${nlunit_test_root}:nlunit-test",
+  ]
+}