diff --git a/changelog.txt b/changelog.txt
index 974bb730c..ebf42da41 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -63,6 +63,7 @@ Removed
  - The signac.common.validate module (#853).
  - The ``Config`` class (#860).
  - The ``DictManager`` class (#858).
+ - The ``signac.testing`` module (#863).
 
 Version 1
 =========
diff --git a/signac/__init__.py b/signac/__init__.py
index 130f79c20..f02334dbe 100644
--- a/signac/__init__.py
+++ b/signac/__init__.py
@@ -9,7 +9,7 @@
 collectively accessible.
 """
 
-from . import contrib, errors, sync, testing
+from . import contrib, errors, sync
 from ._synced_collections.backends.collection_json import (
     BufferedJSONAttrDict as JSONDict,
 )
@@ -44,5 +44,4 @@
     "JSONDict",
     "H5Store",
     "H5StoreManager",
-    "testing",
 ]
diff --git a/signac/testing.py b/signac/testing.py
deleted file mode 100644
index 2bdb91ce7..000000000
--- a/signac/testing.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright (c) 2019 The Regents of the University of Michigan
-# All rights reserved.
-# This software is licensed under the BSD 3-Clause License.
-"""Functions for initializing workspaces for testing purposes."""
-from itertools import cycle
-
-
-# TODO: This feels like something that should be a test fixture or
-# fixture-adjacent, not code that belongs in the main package.
-def init_jobs(project, nested=False, listed=False, heterogeneous=False):
-    """Initialize a dataspace for testing purposes.
-
-    Parameters
-    ----------
-    project : :class:`~signac.Project`
-        The project where jobs will be added.
-    nested : bool, optional
-        If True, included nested state points (Default value = False).
-    listed : bool, optional
-        If True, include lists as values of state point parameters (Default
-        value = False).
-    heterogeneous : bool, optional
-        If True, include heterogeneous state point parameters (Default value =
-        False).
-
-    Returns
-    -------
-    list[:class:`~signac.contrib.job.Job`]
-        A list containing the initialized jobs.
-
-    """
-    jobs_init = []
-    vals = [1, 1.0, "1", False, True, None]
-    if nested:
-        vals += [{"b": v, "c": 0} if heterogeneous else {"b": v} for v in vals]
-    if listed:
-        vals += [[v, 0] if heterogeneous else [v] for v in vals]
-    if heterogeneous:
-        for k, v in zip(cycle("ab"), vals):
-            jobs_init.append(project.open_job({k: v}).init())
-    else:
-        for v in vals:
-            jobs_init.append(project.open_job(dict(a=v)).init())
-    return jobs_init
diff --git a/tests/test_project.py b/tests/test_project.py
index d43ce33c2..529d23d17 100644
--- a/tests/test_project.py
+++ b/tests/test_project.py
@@ -3,7 +3,6 @@
 # This software is licensed under the BSD 3-Clause License.
 import gzip
 import io
-import itertools
 import json
 import logging
 import os
@@ -2431,21 +2430,6 @@ def test_pickle_jobs_directly(self):
             assert pickle.loads(pickle.dumps(job)) == job
 
 
-class TestTestingProjectInitialization(TestProjectBase):
-
-    # Sanity check on all different combinations of inputs
-    def test_input_args(self):
-        for nested, listed, het in itertools.product([True, False], repeat=3):
-            with self.project.temporary_project() as tmp_project:
-                jobs = signac.testing.init_jobs(
-                    tmp_project, nested=nested, listed=listed, heterogeneous=het
-                )
-                assert len(tmp_project) > 0
-                assert len(tmp_project) == len(jobs)
-                # check that call does not fail:
-                tmp_project.detect_schema()
-
-
 class TestProjectStoreBase(test_h5store.TestH5StoreBase):
 
     project_class = signac.Project