diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 87b164e..b9ee384 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ archlinux:
     - pip install build
     - pip install .
   script:
-    - ./tests/run.py
+    - ./tests/run.sh
 
 debian:
   image: "debian:latest"
@@ -15,7 +15,7 @@ debian:
     - pip install build
     - pip install .
   script:
-    - ./tests/run.py
+    - ./tests/run.sh
 
 ubuntu:
   image: "ubuntu:latest"
@@ -29,7 +29,7 @@ ubuntu:
     - source myenv/bin/activate
     - pip install .
   script:
-    - ./tests/run.py
+    - ./tests/run.sh
 
 fedora:
   image: "fedora:latest"
@@ -42,5 +42,5 @@ fedora:
     - source myenv/bin/activate
     - pip install .
   script:
-    - ./tests/run.py
+    - ./tests/run.sh
     
diff --git a/esds/platform.py b/esds/platform.py
index 6742e9d..873546f 100644
--- a/esds/platform.py
+++ b/esds/platform.py
@@ -160,9 +160,6 @@ class YAMLPlatformFile:
                     self.parsing_error("File "+file+" must be a python file")
                 for node in r:
                     self.default["implementations"][node]=path
-            count = len(nodes["implementations"])
-            if count > 1 and count != self.default["node_count"]:
-                self.parsing_error("If more than one implementation is specified, each node implementation should be provided ("+str(self.default["node_count"])+" in total)")
         else:
             self.parsing_error("node implementation not provided")
         ##### Nodes arguments
diff --git a/tests/api_log_5n/platform.yaml b/tests/api_log_5n/platform.yaml
new file mode 100644
index 0000000..03e4416
--- /dev/null
+++ b/tests/api_log_5n/platform.yaml
@@ -0,0 +1,16 @@
+nodes:
+  count: 5
+  implementations:
+    - all node.py
+
+interfaces:
+  wlan0:
+    type: "wireless"
+    links:
+      - all 5bps 0s all
+    txperfs:
+      - all 5bps 0s
+  eth0:
+    type: "wired"
+    links:
+      - all 5Bps 0s all
\ No newline at end of file
diff --git a/tests/api_send_eth0_3s1r/platform.yaml b/tests/api_send_eth0_3s1r/platform.yaml
new file mode 100644
index 0000000..7101548
--- /dev/null
+++ b/tests/api_send_eth0_3s1r/platform.yaml
@@ -0,0 +1,17 @@
+nodes:
+  count: 4
+  implementations:
+    - 0-2 sender.py
+    - 3 receiver.py
+
+interfaces:
+  wlan0:
+    type: "wireless"
+    links:
+      - all 1Bps 0s all
+    txperfs:
+      - all 1Bps 0s
+  eth0:
+    type: "wired"
+    links:
+      - all 1Bps 0s all
\ No newline at end of file
diff --git a/tests/run.sh b/tests/run.sh
index c92187c..676d7c7 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -11,7 +11,9 @@ for test in ${tests}
 do
     printf "%-50s%s %s" "- $(basename $test)" "=>"
     cd $test
-    timeout $test_timeout ${pythonexec} simulator.py &> "$out"
+    testcmd="${pythonexec} simulator.py"
+    [ -e "platform.yaml" ] && testcmd="esds run platform.yaml"
+    timeout $test_timeout ${testcmd} &> "$out"
 
     # Ensure timeout
     if [ $? -eq 124 ]