diff --git a/tests/test_fetch_release.py b/tests/test_fetch_release.py
index 48ad10c..86362be 100644
--- a/tests/test_fetch_release.py
+++ b/tests/test_fetch_release.py
@@ -82,9 +82,8 @@ def test_get_micromamba_existing_version(retry_config, version, use_default_vers
 
     pytest.fail(f"Failed to fetch micromamba release info after multiple retries.")
 
-#TODO add a test with use_default_version = False
 @pytest.mark.parametrize("version", ("2.0.5.rc0", "2.0.4alpha1"))
-def test_get_micromamba_existing_dev_or_prerelease(retry_config, version):
+def test_get_micromamba_existing_dev_or_prerelease_use_default(retry_config, version):
     """
     Test fetching existing micromamba dev or prerelease version.
     """
@@ -106,6 +105,29 @@ def test_get_micromamba_existing_dev_or_prerelease(retry_config, version):
 
     pytest.fail(f"Failed to fetch micromamba release info after multiple retries.")
 
+@pytest.mark.parametrize("version", ("2.0.5.rc0", "2.0.4alpha1"))
+def test_get_micromamba_existing_dev_or_prerelease(retry_config, version):
+    """
+    Test fetching existing micromamba dev or prerelease version.
+    """
+    max_retries = retry_config['max_retries']
+    retry_delay = retry_config['retry_delay']
+
+    for _ in range(max_retries):
+        try:
+            get_micromamba(version, use_default_version = False)
+            assert get_output_value("MICROMAMBA_NEW_VERSION") == "false"
+            assert get_output_value("MICROMAMBA_NEW_PRERELEASE") == None
+            assert get_output_value("MICROMAMBA_LATEST") == None
+            assert get_output_value("MICROMAMBA_VERSION") == None
+            print(f"Fetched micromamba release {version} successfully.")
+            return
+        except requests.exceptions.RequestException as e:
+            print(f"Error fetching micromamba release, retrying... {e}")
+            time.sleep(retry_delay)
+
+    pytest.fail(f"Failed to fetch micromamba release info after multiple retries.")
+
 @pytest.mark.parametrize("use_default_version", (False, True))
 def test_get_micromamba_non_existing_version(use_default_version):
     """
@@ -115,51 +137,6 @@ def test_get_micromamba_non_existing_version(use_default_version):
     with pytest.raises(requests.exceptions.HTTPError):
         get_micromamba("9.10.5", use_default_version)
 
+#TODO mock test for non existing versions => new
+
 
-#def test_get_micromamba_default_version(retry_config):
-    #"""
-    #Test fetching the default (latest) version of micromamba from Anaconda API.
-    #This tests the `use_default_version=True` scenario.
-    #"""
-    #max_retries = retry_config['max_retries']
-    #retry_delay = retry_config['retry_delay']
-
-    #for _ in range(max_retries):
-        #try:
-            #get_micromamba("latest", use_default_version=True)  # Make actual request
-            #print("Fetched the latest micromamba release successfully.")
-            #return  # Success, break out of the loop
-        #except requests.exceptions.RequestException as e:
-            #print(f"Error fetching latest micromamba release, retrying... {e}")
-            #time.sleep(retry_delay)
-
-    #pytest.fail("Failed to fetch the latest micromamba release info after multiple retries.")
-
-
-#def test_get_all_tags_github_with_invalid_url():
-    #"""
-    #Test the behavior when the GitHub API endpoint is invalid (to check error handling).
-    #"""
-    #invalid_url = "https://api.github.com/repos/mamba-org/micromamba-releases/invalid_tags"
-    #try:
-        ## Temporarily override the URL to simulate failure
-        #response = requests.get(invalid_url)
-        #response.raise_for_status()  # Will raise HTTPError for bad responses
-        #pytest.fail("Expected HTTPError due to invalid URL, but the request succeeded.")
-    #except requests.exceptions.RequestException as e:
-        #print(f"Handled expected error: {e}")
-        #assert str(e).startswith("404")
-
-
-#def test_get_micromamba_with_invalid_version():
-    #"""
-    #Test fetching micromamba with an invalid version.
-    #This should raise an error or handle the scenario gracefully.
-    #"""
-    #invalid_version = "999.999.999"  # Invalid version that doesn't exist
-    #try:
-        #get_micromamba(invalid_version, use_default_version=False)
-        #pytest.fail(f"Expected failure for invalid version {invalid_version}, but the request succeeded.")
-    #except requests.exceptions.RequestException as e:
-        #print(f"Handled expected error: {e}")
-        #assert str(e).startswith("404")