diff --git a/tests/api/test_node_conf.nim b/tests/api/test_node_conf.nim
index d0b3d433c..b19739393 100644
--- a/tests/api/test_node_conf.nim
+++ b/tests/api/test_node_conf.nim
@@ -1,11 +1,14 @@
 {.used.}
 
 import std/[options, json, strutils], results, stint, testutils/unittests
-import json_serialization
-import confutils, confutils/std/net
-import tools/confutils/cli_args
-import waku/factory/waku_conf, waku/factory/networks_config
-import waku/common/logging
+import json_serialization, confutils, confutils/std/net
+import
+  tools/confutils/cli_args,
+  waku/api/api_conf,
+  waku/factory/waku_conf,
+  waku/factory/networks_config,
+  waku/factory/conf_builder/conf_builder,
+  waku/common/logging
 
 # Helper: parse JSON into WakuNodeConf using fieldPairs (same as liblogosdelivery)
 proc parseWakuNodeConfFromJson(jsonStr: string): Result[WakuNodeConf, string] =
@@ -75,7 +78,7 @@ suite "WakuNodeConf - mode-driven toWakuConf":
     ## Given
     var conf = defaultWakuNodeConf().valueOr:
       raiseAssert error
-    conf.mode = WakuMode.noMode
+    conf.mode = cli_args.WakuMode.noMode
     conf.relay = true
     conf.lightpush = false
     conf.clusterId = 5
@@ -118,7 +121,7 @@ suite "WakuNodeConf - JSON parsing with fieldPairs":
     require confRes.isOk()
     let conf = confRes.get()
     check:
-      conf.mode == WakuMode.noMode
+      conf.mode == cli_args.WakuMode.noMode
       conf.clusterId == 0
       conf.logLevel == logging.LogLevel.INFO
 
@@ -368,3 +371,60 @@ suite "NodeConfig (deprecated) - toWakuConf":
       wakuConf.peerExchangeService == true
 
 {.pop.}
+
+suite "WakuConfBuilder - store retention policies":
+  test "Multiple retention policies":
+    ## Given
+    var b = WakuConfBuilder.init()
+    b.storeServiceConf.withEnabled(true)
+    b.storeServiceConf.withDbUrl("sqlite://test.db")
+    b.storeServiceConf.withRetentionPolicies(
+      "time:86400 ; capacity:10000;   size  : 50GB"
+    )
+
+    ## When
+    let wakuConf = b.build().valueOr:
+      raiseAssert error
+
+    ## Then
+    require wakuConf.storeServiceConf.isSome()
+    let storeConf = wakuConf.storeServiceConf.get()
+    check storeConf.retentionPolicies == @["time:86400", "capacity:10000", "size:50GB"]
+
+  test "Duplicated retention policies returns error":
+    ## Given
+    var b = WakuConfBuilder.init()
+    b.storeServiceConf.withEnabled(true)
+    b.storeServiceConf.withDbUrl("sqlite://test.db")
+    b.storeServiceConf.withRetentionPolicies("time:86400;time:800;capacity:10000")
+
+    ## When
+    let wakuConfRes = b.build()
+    check wakuConfRes.isErr()
+    check wakuConfRes.error.contains("duplicated retention policy type")
+
+  test "Incorrect retention policy type returns error":
+    ## Given
+    var b = WakuConfBuilder.init()
+    b.storeServiceConf.withEnabled(true)
+    b.storeServiceConf.withDbUrl("sqlite://test.db")
+    b.storeServiceConf.withRetentionPolicies("capaity:10000")
+
+    ## When
+    let wakuConfRes = b.build()
+
+    ## Then
+    check wakuConfRes.isErr()
+    check wakuConfRes.error.contains("unknown retention policy type")
+
+  test "Store disabled - no retention policy applied":
+    ## Given
+    var b = WakuConfBuilder.init()
+    # storeServiceConf not enabled
+
+    ## When
+    let wakuConf = b.build().valueOr:
+      raiseAssert error
+
+    ## Then
+    check wakuConf.storeServiceConf.isNone()