diff --git a/.github/workflows/unit.yaml b/.github/workflows/unit.yaml
index c16e3c5..beccc9d 100644
--- a/.github/workflows/unit.yaml
+++ b/.github/workflows/unit.yaml
@@ -88,3 +88,4 @@ jobs:
           file: ./coverage.xml
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
+          files: ./coverage.xml
diff --git a/docs/usage.rst b/docs/usage.rst
index 4293aed..801f00c 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -85,23 +85,115 @@ Finally you need to configure the ``pytest`` execution environment itself. Add t
 
 You are now ready to make API calls within your tests!
 
+Generate a test file tree in GEE
+--------------------------------
+
+Using the ``pytest_gee`` plugin, you can easily generate a test file tree in GEE that will be used to run your tests.
+This tree will start in a folder named with the ``gee_hash`` fixture and will be deleted at the end of the test session.
+
+By using this method you will ensure that the folder you are using for your test is unique and that it will not interfere with other tests (e.g. parallel tests).
+
+.. code-block:: python
+
+    # test_something.py
+
+    def test_something(gee_hash, gee_folder_root, gee_test_folder):
+        # this folder is existing within your GEE account and will be deleted at the end of the test session
+        print(gee_folder_root)
+
+Customize the test folder tree
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+By default the test folder tree is empty and will be deleted at the end of the test session.
+You can decide to populate it with some assets that will be used in your tests.
+
+To do so customize the ``gee_folder_structure`` fixture in your ``conftest.py`` file.
+This fixture is a ``dict`` that will be used to create the folder tree in GEE. As shown in the following example you can add subfolder and assets to this tree.
+assets need to be ``ee.Image`` or ``ee.FeatureCollection`` objects and remain small as the creation operation is taken care of by the plugin.
+Specifically for ``ee.Image`` objects, please use the ``clipToBoundsAndScale`` method to make sure the asset has a geometry and a scale.
+
+.. code-block:: python
+
+    # conftest.py
+
+    import pytest
+
+    @pytest.fixture(scope="session")
+    def gee_folder_structure():
+        """Override the default test folder structure."""
+        point = ee.Geometry.Point([0, 0])
+        return {
+            "folder": {
+                "image": ee.Image(1).clipToBoundsAndScale(point.buffer(100), scale=30),
+                "fc": ee.FeatureCollection(point),
+            }
+        }
+
+Which will render in your GEE account as:
+
+.. code-block::
+
+    8d98a5be574041a6a54d6def9d915c67/
+    └── folder/
+        ├── fc (FeatureCollection)
+        └── image (ImageCollection)
+
+Customize the root folder
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+By default the test folder will be created at the root of the user account. There are situation where one could prefer to store it in a specific folder.
+
+To do so customize the ``gee_folder_root`` fixture in your ``conftest.py`` file, simply return the asset id of the folder you want to use as root.
+
+.. code-block:: python
+
+    # conftest.py
+
+    import pytest
+
+    @pytest.fixture(scope="session")
+    def gee_folder_root():
+        """Override the default test folder root."""
+        return "users/username/my_root_folder"
+
+.. note::
+
+    This is compulsory if you use a service account to connect to GEE as the service account has no associated root folder.
+
 Create assets
 -------------
 
 Most of tests pipelines are checking different python versions in parallel which can create multiple issues from a GEE perspective:
 
 - The assets names need to be unique
-- the tasks names need also to be unique
+- The tasks names need also to be unique
 
-To avoid this issue, the plugin is shipped with a session wise unique hex fixture that can be used to suffix or prefix your assets and tasks names.
+To avoid this issue, the plugin is shipped with a session wise unique hex fixture ``gee_hash`` that can be used to suffix or prefix your assets and tasks names.
+To make sure the asset exist when you run your tests, you can use the ``pytest_gee.wait`` method to wait until the asset is effectively generated.
 
 .. code-block:: python
 
     # test.py
 
     import pytest
+    import pytest_gee
 
 
     def test_create_asset(gee_hash):
+        # create an asset name
         asset_name = f"asset_{gee_hash}"
+
+        # export the an object to this asset
+        task = ee.batch.Export.image.toAsset(
+            image=ee.Image(1),
+            description=asset_name,
+            assetId=asset_name,
+            scale=1,
+            maxPixels=1e9,
+        )
+        task.start()
+
+        # wait for the asset to be created
+        pytest_gee.wait(task)
+
         # Do something with the asset name
diff --git a/pytest_gee/__init__.py b/pytest_gee/__init__.py
index cad63f5..af18d2a 100644
--- a/pytest_gee/__init__.py
+++ b/pytest_gee/__init__.py
@@ -1,10 +1,15 @@
 """The init file of the package."""
+from __future__ import annotations
+
 import os
 from pathlib import Path
+from typing import Union
 
 import ee
 import httplib2
 
+from pytest_gee import utils
+
 __version__ = "0.2.0"
 __author__ = "Pierrick Rambaud"
 __email__ = "pierrick.rambaud49@gmail.com"
@@ -35,3 +40,18 @@ def init_ee_from_token():
     # if the user is in local development the authentication should
     # already be available
     ee.Initialize(http_transport=httplib2.Http())
+
+
+def wait(task: Union[ee.batch.Task, str], timeout: int = 5 * 60) -> str:
+    """Wait until the selected process is finished or we reached timeout value.
+
+    Args:
+        task: name of the running task or the Task object itself.
+        timeout: timeout in seconds. if set to 0 the parameter is ignored. default to 5 minutes.
+
+    Returns:
+        the final state of the task
+    """
+    # just expose the utils function
+    # this is compulsory as wait is also needed in the utils module
+    return utils.wait(task, timeout)
diff --git a/pytest_gee/plugin.py b/pytest_gee/plugin.py
index 558ece8..9a60864 100644
--- a/pytest_gee/plugin.py
+++ b/pytest_gee/plugin.py
@@ -1,10 +1,38 @@
 """A pytest plugin to build a GEE environment for a test session."""
+from __future__ import annotations
+
 import uuid
+from pathlib import Path
 
+import ee
 import pytest
 
+from . import utils
+
 
 @pytest.fixture(scope="session")
 def gee_hash():
     """Generate a unique hash for the test session."""
     return uuid.uuid4().hex
+
+
+@pytest.fixture(scope="session")
+def gee_folder_root():
+    """Link to the root folder of the connected account."""
+    return Path(ee.data.getAssetRoots()[0]["id"])
+
+
+@pytest.fixture(scope="session")
+def gee_folder_structure():
+    """The structure of the generated test folder."""
+    return {}
+
+
+@pytest.fixture(scope="session")
+def gee_test_folder(gee_hash, gee_folder_root, gee_folder_structure):
+    """Create a test folder for the duration of the test session."""
+    folder = utils.init_tree(gee_folder_structure, gee_hash, gee_folder_root)
+
+    yield folder
+
+    utils.delete_assets(folder, False)
diff --git a/pytest_gee/utils.py b/pytest_gee/utils.py
new file mode 100644
index 0000000..62775c9
--- /dev/null
+++ b/pytest_gee/utils.py
@@ -0,0 +1,227 @@
+"""functions used to build the API that we don't want to expose to end users.
+
+.. danger::
+
+    This module is for internal use only and should not be used directly.
+"""
+from __future__ import annotations
+
+import time
+from pathlib import Path, PurePosixPath
+from typing import List, Optional, Union
+
+import ee
+
+
+def wait(task: Union[ee.batch.Task, str], timeout: int = 10 * 60) -> str:
+    """Wait until the selected process is finished or we reached timeout value.
+
+    Args:
+        task: name of the running task or the Task object itself.
+        timeout: timeout in seconds. if set to 0 the parameter is ignored. default to 1 minutes.
+
+    Returns:
+        the final state of the task
+    """
+    # give 5 seconds of delay to GEE to make sure the task is created
+    time.sleep(5)
+
+    # init both the task object and the state
+    task = task if isinstance(task, ee.batch.Task) else get_task(task)
+    assert task is not None, "The task is not found"
+    state = "UNSUBMITTED"
+
+    # loop every 5s to check the task state. This is blocking the Python interpreter
+    start_time = time.time()
+    while state != "COMPLETED" and time.time() - start_time < timeout:
+        time.sleep(5)
+        state = task.status()["state"]
+        if state == "FAILED":
+            break
+
+    return state
+
+
+def get_task(task_descripsion: str) -> Optional[ee.batch.Task]:
+    """Search for the described task in the user Task list return None if nothing is found.
+
+    Args:
+        task_descripsion: the task description
+
+    Returns:
+        return the found task else None
+    """
+    task = None
+    for t in ee.batch.Task.list():
+        if t.config["description"] == task_descripsion:
+            task = t
+            break
+
+    return task
+
+
+def get_assets(folder: Union[str, Path]) -> List[dict]:
+    """Get all the assets from the parameter folder. every nested asset will be displayed.
+
+    Args:
+        folder: the initial GEE folder
+
+    Returns:
+        the asset list. each asset is a dict with 3 keys: 'type', 'name' and 'id'
+    """
+    # set the folder and init the list
+    asset_list: list = []
+    folder = folder if isinstance(folder, str) else folder.as_posix()
+
+    # recursive function to get all the assets
+    def _recursive_get(folder, asset_list):
+        for asset in ee.data.listAssets({"parent": folder})["assets"]:
+            asset_list.append(asset)
+            if asset["type"] == "FOLDER":
+                asset_list = _recursive_get(asset["name"], asset_list)
+        return asset_list
+
+    return _recursive_get(folder, asset_list)
+
+
+def export_asset(
+    object: ee.ComputedObject, asset_id: Union[str, Path], description: str
+) -> PurePosixPath:
+    """Export assets to the GEE platform, only working for very simple objects.
+
+    ARgs:
+        object: the object to export
+        asset_id: the name of the asset to create
+        description: the description of the task
+
+    Returns:
+        the path of the created asset
+    """
+    # convert the asset_id to a string note that GEE only supports unix style separator
+    asset_id = asset_id if isinstance(asset_id, str) else asset_id.as_posix()
+
+    if isinstance(object, ee.FeatureCollection):
+        task = ee.batch.Export.table.toAsset(
+            collection=object,
+            description=description,
+            assetId=asset_id,
+        )
+    elif isinstance(object, ee.Image):
+        task = ee.batch.Export.image.toAsset(
+            region=object.geometry(),
+            image=object,
+            description=description,
+            assetId=asset_id,
+        )
+    else:
+        raise ValueError("Only ee.Image and ee.FeatureCollection are supported")
+
+    # launch the task and wait for the end of exportation
+    task.start()
+    wait(description)
+
+    return PurePosixPath(asset_id)
+
+
+def init_tree(structure: dict, prefix: str, root: str) -> PurePosixPath:
+    """Create an EarthEngine folder tree from a dictionary.
+
+    The input ditionary should described the structure of the folder you want to create.
+    The keys are the folder names and the values are the subfolders.
+    Once you reach an ``ee.FeatureCollection`` and/or an ``ee.Image`` set it in the dictionary and the function will export the object.
+
+    Args:
+        structure: the structure of the folder to create
+        prefix: the prefix to use on every item (folder, tasks, asset_id, etc.)
+        root: the root folder of the test where to create the test folder.
+
+    Returns:
+        the path of the created folder
+
+    Examples:
+        >>> structure = {
+        ...     "folder_1": {
+        ...         "image": ee.image(1),
+        ...         "fc": ee.FeatureCollection(ee.Geometry.Point([0, 0])),
+        ...     },
+        ... }
+        ... init_tree(structure, "toto")
+    """
+    # recursive function to create the folder tree
+    def _recursive_create(structure, prefix, folder):
+        for name, content in structure.items():
+            asset_id = PurePosixPath(folder) / name
+            description = f"{prefix}_{name}"
+            if isinstance(content, dict):
+                ee.data.createAsset({"type": "FOLDER"}, str(asset_id))
+                _recursive_create(content, prefix, asset_id)
+            else:
+                export_asset(content, asset_id, description)
+
+    # create the root folder
+    root = ee.data.getAssetRoots()[0]["id"]
+    root_folder = f"{root}/{prefix}"
+    ee.data.createAsset({"type": "FOLDER"}, root_folder)
+
+    # start the recursive function
+    _recursive_create(structure, prefix, root_folder)
+
+    return PurePosixPath(root_folder)
+
+
+def delete_assets(asset_id: Union[str, Path], dry_run: bool = True) -> list:
+    """Delete the selected asset and all its content.
+
+    This method will delete all the files and folders existing in an asset folder.
+    By default a dry run will be launched and if you are satisfyed with the displayed names, change the ``dry_run`` variable to ``False``.
+    No other warnng will be displayed.
+
+    .. warning::
+
+        If this method is used on the root directory you will loose all your data, it's highly recommended to use a dry run first and carefully review the destroyed files.
+
+    Args:
+        asset_id: the Id of the asset or a folder
+        dry_run: whether or not a dry run should be launched. dry run will only display the files name without deleting them.
+
+    Returns:
+        a list of all the files deleted or to be deleted
+    """
+    # convert the asset_id to a string
+    asset_id = asset_id if isinstance(asset_id, str) else asset_id.as_posix()
+
+    # define a delete function to change the behaviour of the method depending of the mode
+    # in dry mode, the function only store the assets to be destroyed as a dictionary.
+    # in non dry mode, the function store the asset names in a dictionary AND delete them.
+    output = []
+
+    def delete(id: str):
+        output.append(id)
+        dry_run is True or ee.data.deleteAsset(id)
+
+    # identify the type of asset
+    asset_info = ee.data.getAsset(asset_id)
+
+    if asset_info["type"] == "FOLDER":
+
+        # get all the assets
+        asset_list = get_assets(folder=asset_id)
+
+        # split the files by nesting levels
+        # we will need to delete the more nested files first
+        assets_ordered: dict = {}
+        for asset in asset_list:
+            lvl = len(asset["id"].split("/"))
+            assets_ordered.setdefault(lvl, [])
+            assets_ordered[lvl].append(asset)
+
+        # delete all items starting from the more nested ones
+        assets_ordered = dict(sorted(assets_ordered.items(), reverse=True))
+        for lvl in assets_ordered:
+            for i in assets_ordered[lvl]:
+                delete(i["name"])
+
+    # delete the initial folder/asset
+    delete(asset_id)
+
+    return output
diff --git a/tests/conftest.py b/tests/conftest.py
index ff02bd5..f72300e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,6 @@
 """Pytest session configuration."""
+import ee
+import pytest
 
 import pytest_gee
 
@@ -6,3 +8,15 @@
 def pytest_configure():
     """Init GEE in the test environment."""
     pytest_gee.init_ee_from_token()
+
+
+@pytest.fixture(scope="session")
+def gee_folder_structure():
+    """Override the default test folder structure."""
+    point = ee.Geometry.Point([0, 0])
+    return {
+        "folder": {
+            "image": ee.Image(1).clipToBoundsAndScale(point.buffer(100), scale=30),
+            "fc": ee.FeatureCollection(point),
+        }
+    }
diff --git a/tests/test_pytest_gee.py b/tests/test_pytest_gee.py
index 02b4777..af18aa8 100644
--- a/tests/test_pytest_gee.py
+++ b/tests/test_pytest_gee.py
@@ -1,6 +1,8 @@
 """Test the pytest_gee package."""
 import ee
 
+import pytest_gee
+
 
 def test_hash_fixture(gee_hash):
     """Test the hash fixture."""
@@ -11,3 +13,29 @@ def test_hash_fixture(gee_hash):
 def test_gee_init():
     """Test the init_ee_from_token function."""
     assert ee.Number(1).getInfo() == 1
+
+
+def test_structure(gee_folder_structure):
+    """Test the structure fixture."""
+    assert isinstance(gee_folder_structure, dict)
+    assert "folder" in gee_folder_structure
+    assert "image" in gee_folder_structure["folder"]
+    assert "fc" in gee_folder_structure["folder"]
+
+
+def test_init_tree(gee_folder_root, gee_test_folder):
+    """Test the init_tree function."""
+    # search all the assets contained in the test_folder
+    asset_list = pytest_gee.utils.get_assets(gee_folder_root)
+    asset_list = [i["name"] for i in asset_list]
+
+    # identify specific files and folders
+    folder = gee_test_folder / "folder"
+    image = folder / "image"
+    feature_collection = folder / "fc"
+
+    # check that they exist
+    assert str(gee_test_folder) in asset_list
+    assert str(folder) in asset_list
+    assert str(image) in asset_list
+    assert str(feature_collection) in asset_list