diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a31d346..fa2b93d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,9 +1,6 @@
 name: CI
 
 on:
-  push:
-    branches:
-      - main
   pull_request:
 
 jobs:
diff --git a/tests/test_env.nim b/tests/test_env.nim
new file mode 100644
index 0000000..b70dc95
--- /dev/null
+++ b/tests/test_env.nim
@@ -0,0 +1,34 @@
+discard """
+  cmd: "nim c --skipUserCfg $file"
+"""
+
+import unittest
+import std/os
+import std/osproc
+import std/strutils
+import icp_network
+
+const
+  ICP_PATH = "icp"
+  ENV_SAMPLE_DIR = "/application/examples/env_sample"
+
+suite "Environment variable canister tests":
+  test "local environment is returned by the canister":
+    ensureIcpNetworkStarted(ENV_SAMPLE_DIR)
+
+    let originalDir = getCurrentDir()
+    try:
+      setCurrentDir(ENV_SAMPLE_DIR)
+
+      let (deployOutput, deployExitCode) = execCmdEx(ICP_PATH & " deploy -y")
+      check deployExitCode == 0
+      if deployExitCode == 0:
+        let (callOutput, callExitCode) = execCmdEx(
+          ICP_PATH & " canister call backend env '()'"
+        )
+        check callExitCode == 0
+        check callOutput.strip() == "(\"local\")"
+      else:
+        echo deployOutput
+    finally:
+      setCurrentDir(originalDir)