diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index c48688f3a..e6de86c36 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -48,7 +48,7 @@ def main(args=None, plugins=None):
     :arg plugins: list of plugin objects to be auto-registered during
                   initialization.
     """
-    from _pytest.main import EXIT_USAGEERROR
+    from _pytest.main import ExitCode
 
     try:
         try:
@@ -78,7 +78,7 @@ def main(args=None, plugins=None):
         tw = py.io.TerminalWriter(sys.stderr)
         for msg in e.args:
             tw.line("ERROR: {}\n".format(msg), red=True)
-        return EXIT_USAGEERROR
+        return ExitCode.USAGE_ERROR
 
 
 class cmdline:  # compatibility namespace
diff --git a/src/_pytest/main.py b/src/_pytest/main.py
index 735d60bd6..3aa36c80f 100644
--- a/src/_pytest/main.py
+++ b/src/_pytest/main.py
@@ -1,4 +1,5 @@
 """ core implementation of testing process: init, session, runtest loop. """
+import enum
 import fnmatch
 import functools
 import os
@@ -19,12 +20,15 @@ from _pytest.outcomes import exit
 from _pytest.runner import collect_one_node
 
 # exitcodes for the command line
-EXIT_OK = 0
-EXIT_TESTSFAILED = 1
-EXIT_INTERRUPTED = 2
-EXIT_INTERNALERROR = 3
-EXIT_USAGEERROR = 4
-EXIT_NOTESTSCOLLECTED = 5
+
+
+class ExitCode(enum.IntEnum):
+    OK = 0
+    TESTS_FAILED = 1
+    INTERRUPTED = 2
+    INTERNAL_ERROR = 3
+    USAGE_ERROR = 4
+    NO_TESTS_COLLECTED = 5
 
 
 def pytest_addoption(parser):
@@ -188,7 +192,7 @@ def pytest_configure(config):
 def wrap_session(config, doit):
     """Skeleton command line program"""
     session = Session(config)
-    session.exitstatus = EXIT_OK
+    session.exitstatus = ExitCode.OK
     initstate = 0
     try:
         try:
@@ -198,13 +202,13 @@ def wrap_session(config, doit):
             initstate = 2
             session.exitstatus = doit(config, session) or 0
         except UsageError:
-            session.exitstatus = EXIT_USAGEERROR
+            session.exitstatus = ExitCode.USAGE_ERROR
             raise
         except Failed:
-            session.exitstatus = EXIT_TESTSFAILED
+            session.exitstatus = ExitCode.TESTS_FAILED
         except (KeyboardInterrupt, exit.Exception):
             excinfo = _pytest._code.ExceptionInfo.from_current()
-            exitstatus = EXIT_INTERRUPTED
+            exitstatus = ExitCode.INTERRUPTED
             if isinstance(excinfo.value, exit.Exception):
                 if excinfo.value.returncode is not None:
                     exitstatus = excinfo.value.returncode
@@ -217,7 +221,7 @@ def wrap_session(config, doit):
         except:  # noqa
             excinfo = _pytest._code.ExceptionInfo.from_current()
             config.notify_exception(excinfo, config.option)
-            session.exitstatus = EXIT_INTERNALERROR
+            session.exitstatus = ExitCode.INTERNAL_ERROR
             if excinfo.errisinstance(SystemExit):
                 sys.stderr.write("mainloop: caught unexpected SystemExit!\n")
 
@@ -243,9 +247,9 @@ def _main(config, session):
     config.hook.pytest_runtestloop(session=session)
 
     if session.testsfailed:
-        return EXIT_TESTSFAILED
+        return ExitCode.TESTS_FAILED
     elif session.testscollected == 0:
-        return EXIT_NOTESTSCOLLECTED
+        return ExitCode.NO_TESTS_COLLECTED
 
 
 def pytest_collection(session):
diff --git a/src/_pytest/pytester.py b/src/_pytest/pytester.py
index 4f0342ab5..1da5bd9ef 100644
--- a/src/_pytest/pytester.py
+++ b/src/_pytest/pytester.py
@@ -19,8 +19,7 @@ from _pytest._io.saferepr import saferepr
 from _pytest.assertion.rewrite import AssertionRewritingHook
 from _pytest.capture import MultiCapture
 from _pytest.capture import SysCapture
-from _pytest.main import EXIT_INTERRUPTED
-from _pytest.main import EXIT_OK
+from _pytest.main import ExitCode
 from _pytest.main import Session
 from _pytest.monkeypatch import MonkeyPatch
 from _pytest.pathlib import Path
@@ -691,7 +690,7 @@ class Testdir:
         p = py.path.local(arg)
         config.hook.pytest_sessionstart(session=session)
         res = session.perform_collect([str(p)], genitems=False)[0]
-        config.hook.pytest_sessionfinish(session=session, exitstatus=EXIT_OK)
+        config.hook.pytest_sessionfinish(session=session, exitstatus=ExitCode.OK)
         return res
 
     def getpathnode(self, path):
@@ -708,11 +707,11 @@ class Testdir:
         x = session.fspath.bestrelpath(path)
         config.hook.pytest_sessionstart(session=session)
         res = session.perform_collect([x], genitems=False)[0]
-        config.hook.pytest_sessionfinish(session=session, exitstatus=EXIT_OK)
+        config.hook.pytest_sessionfinish(session=session, exitstatus=ExitCode.OK)
         return res
 
     def genitems(self, colitems):
-        """Generate all test items from a collection node.
+        """Generate all test items from a collection node.src/_pytest/main.py
 
         This recurses into the collection node and returns a list of all the
         test items contained within.
@@ -841,7 +840,7 @@ class Testdir:
 
             # typically we reraise keyboard interrupts from the child run
             # because it's our user requesting interruption of the testing
-            if ret == EXIT_INTERRUPTED and not no_reraise_ctrlc:
+            if ret == ExitCode.INTERRUPTED and not no_reraise_ctrlc:
                 calls = reprec.getcalls("pytest_keyboard_interrupt")
                 if calls and calls[-1].excinfo.type == KeyboardInterrupt:
                     raise KeyboardInterrupt()
diff --git a/src/_pytest/terminal.py b/src/_pytest/terminal.py
index 6f9890301..91e373852 100644
--- a/src/_pytest/terminal.py
+++ b/src/_pytest/terminal.py
@@ -16,11 +16,7 @@ from more_itertools import collapse
 
 import pytest
 from _pytest import nodes
-from _pytest.main import EXIT_INTERRUPTED
-from _pytest.main import EXIT_NOTESTSCOLLECTED
-from _pytest.main import EXIT_OK
-from _pytest.main import EXIT_TESTSFAILED
-from _pytest.main import EXIT_USAGEERROR
+from _pytest.main import ExitCode
 
 REPORT_COLLECTING_RESOLUTION = 0.5
 
@@ -654,17 +650,17 @@ class TerminalReporter:
         outcome.get_result()
         self._tw.line("")
         summary_exit_codes = (
-            EXIT_OK,
-            EXIT_TESTSFAILED,
-            EXIT_INTERRUPTED,
-            EXIT_USAGEERROR,
-            EXIT_NOTESTSCOLLECTED,
+            ExitCode.OK,
+            ExitCode.TESTS_FAILED,
+            ExitCode.INTERRUPTED,
+            ExitCode.USAGE_ERROR,
+            ExitCode.NO_TESTS_COLLECTED,
         )
         if exitstatus in summary_exit_codes:
             self.config.hook.pytest_terminal_summary(
                 terminalreporter=self, exitstatus=exitstatus, config=self.config
             )
-        if exitstatus == EXIT_INTERRUPTED:
+        if exitstatus == ExitCode.INTERRUPTED:
             self._report_keyboardinterrupt()
             del self._keyboardinterrupt_memo
         self.summary_stats()
diff --git a/src/pytest.py b/src/pytest.py
index a6376843d..a3fa26084 100644
--- a/src/pytest.py
+++ b/src/pytest.py
@@ -15,6 +15,7 @@ from _pytest.fixtures import fillfixtures as _fillfuncargs
 from _pytest.fixtures import fixture
 from _pytest.fixtures import yield_fixture
 from _pytest.freeze_support import freeze_includes
+from _pytest.main import ExitCode
 from _pytest.main import Session
 from _pytest.mark import MARK_GEN as mark
 from _pytest.mark import param
@@ -57,6 +58,7 @@ __all__ = [
     "Collector",
     "deprecated_call",
     "exit",
+    "ExitCode",
     "fail",
     "File",
     "fixture",
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index caa0d5191..60cc21c4a 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -8,8 +8,7 @@ import importlib_metadata
 import py
 
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
-from _pytest.main import EXIT_USAGEERROR
+from _pytest.main import ExitCode
 from _pytest.warnings import SHOW_PYTEST_WARNINGS_ARG
 
 
@@ -24,7 +23,7 @@ class TestGeneralUsage:
     def test_config_error(self, testdir):
         testdir.copy_example("conftest_usageerror/conftest.py")
         result = testdir.runpytest(testdir.tmpdir)
-        assert result.ret == EXIT_USAGEERROR
+        assert result.ret == ExitCode.USAGE_ERROR
         result.stderr.fnmatch_lines(["*ERROR: hello"])
         result.stdout.fnmatch_lines(["*pytest_unconfigure_called"])
 
@@ -83,7 +82,7 @@ class TestGeneralUsage:
         """
         )
         result = testdir.runpytest("-s", "asd")
-        assert result.ret == 4  # EXIT_USAGEERROR
+        assert result.ret == ExitCode.USAGE_ERROR
         result.stderr.fnmatch_lines(["ERROR: file not found*asd"])
         result.stdout.fnmatch_lines(["*---configure", "*---unconfigure"])
 
@@ -229,7 +228,7 @@ class TestGeneralUsage:
         """
         )
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stdout.fnmatch_lines(["*1 skip*"])
 
     def test_issue88_initial_file_multinodes(self, testdir):
@@ -247,7 +246,7 @@ class TestGeneralUsage:
         """
         )
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         assert "should not be seen" not in result.stdout.str()
         assert "stderr42" not in result.stderr.str()
 
@@ -290,13 +289,13 @@ class TestGeneralUsage:
         sub2 = testdir.mkdir("sub2")
         sub1.join("conftest.py").write("assert 0")
         result = testdir.runpytest(sub2)
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         sub2.ensure("__init__.py")
         p = sub2.ensure("test_hello.py")
         result = testdir.runpytest(p)
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result = testdir.runpytest(sub1)
-        assert result.ret == EXIT_USAGEERROR
+        assert result.ret == ExitCode.USAGE_ERROR
 
     def test_directory_skipped(self, testdir):
         testdir.makeconftest(
@@ -308,7 +307,7 @@ class TestGeneralUsage:
         )
         testdir.makepyfile("def test_hello(): pass")
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stdout.fnmatch_lines(["*1 skipped*"])
 
     def test_multiple_items_per_collector_byid(self, testdir):
@@ -410,10 +409,10 @@ class TestGeneralUsage:
     def test_report_all_failed_collections_initargs(self, testdir):
         testdir.makeconftest(
             """
-            from _pytest.main import EXIT_USAGEERROR
+            from _pytest.main import ExitCode
 
             def pytest_sessionfinish(exitstatus):
-                assert exitstatus == EXIT_USAGEERROR
+                assert exitstatus == ExitCode.USAGE_ERROR
                 print("pytest_sessionfinish_called")
             """
         )
@@ -421,7 +420,7 @@ class TestGeneralUsage:
         result = testdir.runpytest("test_a.py::a", "test_b.py::b")
         result.stderr.fnmatch_lines(["*ERROR*test_a.py::a*", "*ERROR*test_b.py::b*"])
         result.stdout.fnmatch_lines(["pytest_sessionfinish_called"])
-        assert result.ret == EXIT_USAGEERROR
+        assert result.ret == ExitCode.USAGE_ERROR
 
     @pytest.mark.usefixtures("recwarn")
     def test_namespace_import_doesnt_confuse_import_hook(self, testdir):
@@ -612,7 +611,7 @@ class TestInvocationVariants:
 
     def test_invoke_with_path(self, tmpdir, capsys):
         retcode = pytest.main(tmpdir)
-        assert retcode == EXIT_NOTESTSCOLLECTED
+        assert retcode == ExitCode.NO_TESTS_COLLECTED
         out, err = capsys.readouterr()
 
     def test_invoke_plugin_api(self, testdir, capsys):
@@ -1160,7 +1159,7 @@ def test_fixture_mock_integration(testdir):
 
 def test_usage_error_code(testdir):
     result = testdir.runpytest("-unknown-option-")
-    assert result.ret == EXIT_USAGEERROR
+    assert result.ret == ExitCode.USAGE_ERROR
 
 
 @pytest.mark.filterwarnings("default")
diff --git a/testing/python/collect.py b/testing/python/collect.py
index d648452fd..c2b09aeb8 100644
--- a/testing/python/collect.py
+++ b/testing/python/collect.py
@@ -4,7 +4,7 @@ import textwrap
 
 import _pytest._code
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 from _pytest.nodes import Collector
 
 
@@ -246,7 +246,7 @@ class TestClass:
         """
         )
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 class TestFunction:
@@ -1140,7 +1140,7 @@ def test_unorderable_types(testdir):
     )
     result = testdir.runpytest()
     assert "TypeError" not in result.stdout.str()
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_collect_functools_partial(testdir):
diff --git a/testing/test_assertrewrite.py b/testing/test_assertrewrite.py
index 61c5b9383..0e6f42239 100644
--- a/testing/test_assertrewrite.py
+++ b/testing/test_assertrewrite.py
@@ -15,7 +15,7 @@ from _pytest.assertion import util
 from _pytest.assertion.rewrite import AssertionRewritingHook
 from _pytest.assertion.rewrite import PYTEST_TAG
 from _pytest.assertion.rewrite import rewrite_asserts
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 
 def setup_module(mod):
@@ -692,7 +692,7 @@ class TestRewriteOnImport:
             import test_gum.test_lizard"""
             % (z_fn,)
         )
-        assert testdir.runpytest().ret == EXIT_NOTESTSCOLLECTED
+        assert testdir.runpytest().ret == ExitCode.NO_TESTS_COLLECTED
 
     def test_readonly(self, testdir):
         sub = testdir.mkdir("testing")
@@ -792,7 +792,7 @@ def test_rewritten():
         pkg = testdir.mkdir("a_package_without_init_py")
         pkg.join("module.py").ensure()
         testdir.makepyfile("import a_package_without_init_py.module")
-        assert testdir.runpytest().ret == EXIT_NOTESTSCOLLECTED
+        assert testdir.runpytest().ret == ExitCode.NO_TESTS_COLLECTED
 
     def test_rewrite_warning(self, testdir):
         testdir.makeconftest(
diff --git a/testing/test_cacheprovider.py b/testing/test_cacheprovider.py
index a2e701740..cbba27e5f 100644
--- a/testing/test_cacheprovider.py
+++ b/testing/test_cacheprovider.py
@@ -6,7 +6,7 @@ import textwrap
 import py
 
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 pytest_plugins = ("pytester",)
 
@@ -757,7 +757,7 @@ class TestLastFailed:
                 "* 2 deselected in *",
             ]
         )
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
     def test_lastfailed_no_failures_behavior_empty_cache(self, testdir):
         testdir.makepyfile(
diff --git a/testing/test_capture.py b/testing/test_capture.py
index a85025c27..8d1d33bc7 100644
--- a/testing/test_capture.py
+++ b/testing/test_capture.py
@@ -12,7 +12,7 @@ import py
 import pytest
 from _pytest import capture
 from _pytest.capture import CaptureManager
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 # note: py.io capture tests where copied from
 # pylib 1.4.20.dev2 (rev 13d9af95547e)
@@ -361,7 +361,7 @@ class TestLoggingInteraction:
         )
         # make sure that logging is still captured in tests
         result = testdir.runpytest_subprocess("-s", "-p", "no:capturelog")
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stderr.fnmatch_lines(["WARNING*hello435*"])
         assert "operation on closed file" not in result.stderr.str()
 
diff --git a/testing/test_collection.py b/testing/test_collection.py
index c938a915d..864125c40 100644
--- a/testing/test_collection.py
+++ b/testing/test_collection.py
@@ -7,8 +7,7 @@ import py
 
 import pytest
 from _pytest.main import _in_venv
-from _pytest.main import EXIT_INTERRUPTED
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 from _pytest.main import Session
 
 
@@ -347,7 +346,7 @@ class TestCustomConftests:
         assert result.ret == 0
         result.stdout.fnmatch_lines(["*1 passed*"])
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stdout.fnmatch_lines(["*collected 0 items*"])
 
     def test_collectignore_exclude_on_option(self, testdir):
@@ -364,7 +363,7 @@ class TestCustomConftests:
         testdir.mkdir("hello")
         testdir.makepyfile(test_world="def test_hello(): pass")
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         assert "passed" not in result.stdout.str()
         result = testdir.runpytest("--XX")
         assert result.ret == 0
@@ -384,7 +383,7 @@ class TestCustomConftests:
         testdir.makepyfile(test_world="def test_hello(): pass")
         testdir.makepyfile(test_welt="def test_hallo(): pass")
         result = testdir.runpytest()
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stdout.fnmatch_lines(["*collected 0 items*"])
         result = testdir.runpytest("--XX")
         assert result.ret == 0
@@ -1172,7 +1171,7 @@ def test_collectignore_via_conftest(testdir, monkeypatch):
     ignore_me.ensure("conftest.py").write("assert 0, 'should_not_be_called'")
 
     result = testdir.runpytest()
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_collect_pkg_init_and_file_in_args(testdir):
@@ -1234,7 +1233,7 @@ def test_collect_sub_with_symlinks(use_pkg, testdir):
 def test_collector_respects_tbstyle(testdir):
     p1 = testdir.makepyfile("assert 0")
     result = testdir.runpytest(p1, "--tb=native")
-    assert result.ret == EXIT_INTERRUPTED
+    assert result.ret == ExitCode.INTERRUPTED
     result.stdout.fnmatch_lines(
         [
             "*_ ERROR collecting test_collector_respects_tbstyle.py _*",
diff --git a/testing/test_config.py b/testing/test_config.py
index c3b027ab9..b9fc388d2 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -10,10 +10,7 @@ from _pytest.config.exceptions import UsageError
 from _pytest.config.findpaths import determine_setup
 from _pytest.config.findpaths import get_common_ancestor
 from _pytest.config.findpaths import getcfg
-from _pytest.main import EXIT_NOTESTSCOLLECTED
-from _pytest.main import EXIT_OK
-from _pytest.main import EXIT_TESTSFAILED
-from _pytest.main import EXIT_USAGEERROR
+from _pytest.main import ExitCode
 
 
 class TestParseIni:
@@ -189,7 +186,7 @@ class TestConfigCmdlineParsing:
 
         temp_ini_file = normpath(str(temp_ini_file))
         ret = pytest.main(["-c", temp_ini_file])
-        assert ret == _pytest.main.EXIT_OK
+        assert ret == ExitCode.OK
 
 
 class TestConfigAPI:
@@ -726,7 +723,7 @@ def test_consider_args_after_options_for_rootdir(testdir, args):
 @pytest.mark.skipif("sys.platform == 'win32'")
 def test_toolongargs_issue224(testdir):
     result = testdir.runpytest("-m", "hello" * 500)
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_config_in_subdirectory_colon_command_line_issue2148(testdir):
@@ -1086,7 +1083,7 @@ class TestOverrideIniArgs:
                 % (testdir.request.config._parser.optparser.prog,)
             ]
         )
-        assert result.ret == _pytest.main.EXIT_USAGEERROR
+        assert result.ret == _pytest.main.ExitCode.USAGE_ERROR
 
     def test_override_ini_does_not_contain_paths(self, _config_for_test, _sys_snapshot):
         """Check that -o no longer swallows all options after it (#3103)"""
@@ -1175,13 +1172,13 @@ def test_help_and_version_after_argument_error(testdir):
     )
     # Does not display full/default help.
     assert "to see available markers type: pytest --markers" not in result.stdout.lines
-    assert result.ret == EXIT_USAGEERROR
+    assert result.ret == ExitCode.USAGE_ERROR
 
     result = testdir.runpytest("--version")
     result.stderr.fnmatch_lines(
         ["*pytest*{}*imported from*".format(pytest.__version__)]
     )
-    assert result.ret == EXIT_USAGEERROR
+    assert result.ret == ExitCode.USAGE_ERROR
 
 
 def test_config_does_not_load_blocked_plugin_from_args(testdir):
@@ -1189,11 +1186,11 @@ def test_config_does_not_load_blocked_plugin_from_args(testdir):
     p = testdir.makepyfile("def test(capfd): pass")
     result = testdir.runpytest(str(p), "-pno:capture")
     result.stdout.fnmatch_lines(["E       fixture 'capfd' not found"])
-    assert result.ret == EXIT_TESTSFAILED
+    assert result.ret == ExitCode.TESTS_FAILED
 
     result = testdir.runpytest(str(p), "-pno:capture", "-s")
     result.stderr.fnmatch_lines(["*: error: unrecognized arguments: -s"])
-    assert result.ret == EXIT_USAGEERROR
+    assert result.ret == ExitCode.USAGE_ERROR
 
 
 @pytest.mark.parametrize(
@@ -1219,7 +1216,7 @@ def test_config_blocked_default_plugins(testdir, plugin):
     result = testdir.runpytest(str(p), "-pno:%s" % plugin)
 
     if plugin == "python":
-        assert result.ret == EXIT_USAGEERROR
+        assert result.ret == ExitCode.USAGE_ERROR
         result.stderr.fnmatch_lines(
             [
                 "ERROR: not found: */test_config_blocked_default_plugins.py",
@@ -1228,13 +1225,13 @@ def test_config_blocked_default_plugins(testdir, plugin):
         )
         return
 
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
     if plugin != "terminal":
         result.stdout.fnmatch_lines(["* 1 passed in *"])
 
     p = testdir.makepyfile("def test(): assert 0")
     result = testdir.runpytest(str(p), "-pno:%s" % plugin)
-    assert result.ret == EXIT_TESTSFAILED
+    assert result.ret == ExitCode.TESTS_FAILED
     if plugin != "terminal":
         result.stdout.fnmatch_lines(["* 1 failed in *"])
     else:
diff --git a/testing/test_conftest.py b/testing/test_conftest.py
index f29531eb7..447416f10 100644
--- a/testing/test_conftest.py
+++ b/testing/test_conftest.py
@@ -4,9 +4,7 @@ import py
 
 import pytest
 from _pytest.config import PytestPluginManager
-from _pytest.main import EXIT_NOTESTSCOLLECTED
-from _pytest.main import EXIT_OK
-from _pytest.main import EXIT_USAGEERROR
+from _pytest.main import ExitCode
 
 
 def ConftestWithSetinitial(path):
@@ -223,11 +221,11 @@ def test_conftest_symlink(testdir):
             "PASSED",
         ]
     )
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
 
     # Should not cause "ValueError: Plugin already registered" (#4174).
     result = testdir.runpytest("-vs", "symlink")
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
 
     realtests.ensure("__init__.py")
     result = testdir.runpytest("-vs", "symlinktests/test_foo.py::test1")
@@ -238,7 +236,7 @@ def test_conftest_symlink(testdir):
             "PASSED",
         ]
     )
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
 
 
 @pytest.mark.skipif(
@@ -274,16 +272,16 @@ def test_conftest_symlink_files(testdir):
     build.chdir()
     result = testdir.runpytest("-vs", "app/test_foo.py")
     result.stdout.fnmatch_lines(["*conftest_loaded*", "PASSED"])
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
 
 
 def test_no_conftest(testdir):
     testdir.makeconftest("assert 0")
     result = testdir.runpytest("--noconftest")
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
     result = testdir.runpytest()
-    assert result.ret == EXIT_USAGEERROR
+    assert result.ret == ExitCode.USAGE_ERROR
 
 
 def test_conftest_existing_resultlog(testdir):
diff --git a/testing/test_helpconfig.py b/testing/test_helpconfig.py
index ec061cad9..962750f7b 100644
--- a/testing/test_helpconfig.py
+++ b/testing/test_helpconfig.py
@@ -1,5 +1,5 @@
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 
 def test_version(testdir, pytestconfig):
@@ -49,7 +49,7 @@ def test_hookvalidation_optional(testdir):
     """
     )
     result = testdir.runpytest()
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_traceconfig(testdir):
@@ -59,7 +59,7 @@ def test_traceconfig(testdir):
 
 def test_debug(testdir, monkeypatch):
     result = testdir.runpytest_subprocess("--debug")
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
     p = testdir.tmpdir.join("pytestdebug.log")
     assert "pytest_sessionstart" in p.read()
 
@@ -67,7 +67,7 @@ def test_debug(testdir, monkeypatch):
 def test_PYTEST_DEBUG(testdir, monkeypatch):
     monkeypatch.setenv("PYTEST_DEBUG", "1")
     result = testdir.runpytest_subprocess()
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
     result.stderr.fnmatch_lines(
         ["*pytest_plugin_registered*", "*manager*PluginManager*"]
     )
diff --git a/testing/test_mark.py b/testing/test_mark.py
index 8d97f8b4e..c22e9dbb5 100644
--- a/testing/test_mark.py
+++ b/testing/test_mark.py
@@ -3,7 +3,7 @@ import sys
 from unittest import mock
 
 import pytest
-from _pytest.main import EXIT_INTERRUPTED
+from _pytest.main import ExitCode
 from _pytest.mark import EMPTY_PARAMETERSET_OPTION
 from _pytest.mark import MarkGenerator as Mark
 from _pytest.nodes import Collector
@@ -903,7 +903,7 @@ def test_parameterset_for_fail_at_collect(testdir):
             "*= 1 error in *",
         ]
     )
-    assert result.ret == EXIT_INTERRUPTED
+    assert result.ret == ExitCode.INTERRUPTED
 
 
 def test_parameterset_for_parametrize_bad_markname(testdir):
diff --git a/testing/test_pluginmanager.py b/testing/test_pluginmanager.py
index 8afb37fa1..97f220ca5 100644
--- a/testing/test_pluginmanager.py
+++ b/testing/test_pluginmanager.py
@@ -5,7 +5,7 @@ import types
 import pytest
 from _pytest.config import PytestPluginManager
 from _pytest.config.exceptions import UsageError
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 from _pytest.main import Session
 
 
@@ -227,7 +227,7 @@ class TestPytestPluginManager:
         p.copy(p.dirpath("skipping2.py"))
         monkeypatch.setenv("PYTEST_PLUGINS", "skipping2")
         result = testdir.runpytest("-rw", "-p", "skipping1", syspathinsert=True)
-        assert result.ret == EXIT_NOTESTSCOLLECTED
+        assert result.ret == ExitCode.NO_TESTS_COLLECTED
         result.stdout.fnmatch_lines(
             ["*skipped plugin*skipping1*hello*", "*skipped plugin*skipping2*hello*"]
         )
diff --git a/testing/test_pytester.py b/testing/test_pytester.py
index ca12672f5..37b63f31a 100644
--- a/testing/test_pytester.py
+++ b/testing/test_pytester.py
@@ -8,9 +8,7 @@ import py.path
 import _pytest.pytester as pytester
 import pytest
 from _pytest.config import PytestPluginManager
-from _pytest.main import EXIT_NOTESTSCOLLECTED
-from _pytest.main import EXIT_OK
-from _pytest.main import EXIT_TESTSFAILED
+from _pytest.main import ExitCode
 from _pytest.pytester import CwdSnapshot
 from _pytest.pytester import HookRecorder
 from _pytest.pytester import LineMatcher
@@ -206,11 +204,11 @@ class TestInlineRunModulesCleanup:
     def test_inline_run_test_module_not_cleaned_up(self, testdir):
         test_mod = testdir.makepyfile("def test_foo(): assert True")
         result = testdir.inline_run(str(test_mod))
-        assert result.ret == EXIT_OK
+        assert result.ret == ExitCode.OK
         # rewrite module, now test should fail if module was re-imported
         test_mod.write("def test_foo(): assert False")
         result2 = testdir.inline_run(str(test_mod))
-        assert result2.ret == EXIT_TESTSFAILED
+        assert result2.ret == ExitCode.TESTS_FAILED
 
     def spy_factory(self):
         class SysModulesSnapshotSpy:
@@ -411,12 +409,12 @@ def test_testdir_subprocess(testdir):
 
 def test_unicode_args(testdir):
     result = testdir.runpytest("-k", "💩")
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_testdir_run_no_timeout(testdir):
     testfile = testdir.makepyfile("def test_no_timeout(): pass")
-    assert testdir.runpytest_subprocess(testfile).ret == EXIT_OK
+    assert testdir.runpytest_subprocess(testfile).ret == ExitCode.OK
 
 
 def test_testdir_run_with_timeout(testdir):
@@ -429,7 +427,7 @@ def test_testdir_run_with_timeout(testdir):
     end = time.time()
     duration = end - start
 
-    assert result.ret == EXIT_OK
+    assert result.ret == ExitCode.OK
     assert duration < timeout
 
 
diff --git a/testing/test_runner.py b/testing/test_runner.py
index 13f722036..15180c071 100644
--- a/testing/test_runner.py
+++ b/testing/test_runner.py
@@ -653,7 +653,7 @@ def test_pytest_fail_notrace_non_ascii(testdir):
 def test_pytest_no_tests_collected_exit_status(testdir):
     result = testdir.runpytest()
     result.stdout.fnmatch_lines(["*collected 0 items*"])
-    assert result.ret == main.EXIT_NOTESTSCOLLECTED
+    assert result.ret == main.ExitCode.NO_TESTS_COLLECTED
 
     testdir.makepyfile(
         test_foo="""
@@ -664,12 +664,12 @@ def test_pytest_no_tests_collected_exit_status(testdir):
     result = testdir.runpytest()
     result.stdout.fnmatch_lines(["*collected 1 item*"])
     result.stdout.fnmatch_lines(["*1 passed*"])
-    assert result.ret == main.EXIT_OK
+    assert result.ret == main.ExitCode.OK
 
     result = testdir.runpytest("-k nonmatch")
     result.stdout.fnmatch_lines(["*collected 1 item*"])
     result.stdout.fnmatch_lines(["*1 deselected*"])
-    assert result.ret == main.EXIT_NOTESTSCOLLECTED
+    assert result.ret == main.ExitCode.NO_TESTS_COLLECTED
 
 
 def test_exception_printing_skip():
diff --git a/testing/test_session.py b/testing/test_session.py
index 1a0ae8080..dbe057376 100644
--- a/testing/test_session.py
+++ b/testing/test_session.py
@@ -1,5 +1,5 @@
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 
 class SessionTests:
@@ -330,7 +330,7 @@ def test_sessionfinish_with_start(testdir):
     """
     )
     res = testdir.runpytest("--collect-only")
-    assert res.ret == EXIT_NOTESTSCOLLECTED
+    assert res.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 @pytest.mark.parametrize("path", ["root", "{relative}/root", "{environment}/root"])
diff --git a/testing/test_terminal.py b/testing/test_terminal.py
index cc2c474ab..bf029fbc5 100644
--- a/testing/test_terminal.py
+++ b/testing/test_terminal.py
@@ -10,7 +10,7 @@ import pluggy
 import py
 
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 from _pytest.reports import BaseReport
 from _pytest.terminal import _folded_skips
 from _pytest.terminal import _get_line_with_reprcrash_message
@@ -937,7 +937,7 @@ def test_tbstyle_short(testdir):
 def test_traceconfig(testdir, monkeypatch):
     result = testdir.runpytest("--traceconfig")
     result.stdout.fnmatch_lines(["*active plugins*"])
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 class TestGenericReporting:
diff --git a/testing/test_unittest.py b/testing/test_unittest.py
index adcc232fd..2467ddd39 100644
--- a/testing/test_unittest.py
+++ b/testing/test_unittest.py
@@ -1,7 +1,7 @@
 import gc
 
 import pytest
-from _pytest.main import EXIT_NOTESTSCOLLECTED
+from _pytest.main import ExitCode
 
 
 def test_simple_unittest(testdir):
@@ -55,7 +55,7 @@ def test_isclasscheck_issue53(testdir):
     """
     )
     result = testdir.runpytest(testpath)
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_setup(testdir):
@@ -704,7 +704,7 @@ def test_unorderable_types(testdir):
     )
     result = testdir.runpytest()
     assert "TypeError" not in result.stdout.str()
-    assert result.ret == EXIT_NOTESTSCOLLECTED
+    assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 
 def test_unittest_typerror_traceback(testdir):