From e561fe29c94be01555d077639dda5d2c70e3ab4d Mon Sep 17 00:00:00 2001
From: HAOCHENYE <21724054@zju.edu.cn>
Date: Thu, 21 Sep 2023 15:50:44 +0800
Subject: [PATCH 01/12] Support install mmengine lite

---
 .circleci/test.yml                     | 27 ++++++++++++++++++++++
 docs/en/get_started/installation.md    | 10 ++++++++
 docs/zh_cn/get_started/installation.md | 10 ++++++++
 setup.py                               | 32 +++++++++++++++-----------
 4 files changed, 65 insertions(+), 14 deletions(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index dd2f268b3c..1f36405bd7 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -54,6 +54,33 @@ jobs:
           name: Run unit tests
           command: pytest tests/test_config tests/test_registry tests/test_fileio tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils
 
+  build_lite:
+    parameters:
+      # The python version must match available image tags in
+      # https://circleci.com/developer/images/image/cimg/python
+      python:
+        type: string
+        default: "3.7.4"
+    docker:
+      - image: cimg/python:<< parameters.python >>
+    resource_class: large
+    steps:
+      - checkout
+      - run:
+          name: Upgrade pip
+          command: |
+            pip install pip --upgrade
+            pip --version
+      - run:
+          name: Build MMEngine from source
+          command: MMENGINE_LITE=1 pip install -e -v
+      - run:
+          name: Install unit tests dependencies
+          command: pip install -r requirements/tests.txt
+      - run:
+          name: Run unit tests
+          command: pytest tests/test_config tests/test_registry tests/test_fileio tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils
+
   build_cpu:
     parameters:
       # The python version must match available image tags in
diff --git a/docs/en/get_started/installation.md b/docs/en/get_started/installation.md
index 45a7affab3..3ed5e408a9 100644
--- a/docs/en/get_started/installation.md
+++ b/docs/en/get_started/installation.md
@@ -35,10 +35,17 @@ pip install -U openmim
 mim install mmengine
 ```
 
+If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
+
+```bash
+MMENGINE_LITE=1 mim install mmengine
+```
+
 ### Install with pip
 
 ```bash
 pip install mmengine
+# MMENGINE_LITE=1 pip install mmengine
 ```
 
 ### Use docker images
@@ -64,6 +71,9 @@ pip install mmengine
 git clone https://github.com/open-mmlab/mmengine.git
 cd mmengine
 pip install -e . -v
+
+# If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
+# MMENGINE_LITE=1 pip install -e . -v
 ```
 
 ### Verify the Installation
diff --git a/docs/zh_cn/get_started/installation.md b/docs/zh_cn/get_started/installation.md
index 917a256772..969256f849 100644
--- a/docs/zh_cn/get_started/installation.md
+++ b/docs/zh_cn/get_started/installation.md
@@ -35,10 +35,17 @@ pip install -U openmim
 mim install mmengine
 ```
 
+如果你只想使用 MMEngine 中的 fileio、registry 和 configs，可以安装 mmengine lite：
+
+```bash
+MMENGINE_LITE=1 mim install mmengine
+```
+
 ### 使用 pip 安装
 
 ```bash
 pip install mmengine
+# MMENGINE_LITE=1 pip install mmengine
 ```
 
 ### 使用 docker 镜像
@@ -64,6 +71,9 @@ pip install mmengine
 git clone https://github.com/open-mmlab/mmengine.git
 cd mmengine
 pip install -e . -v
+
+# If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
+# MMENGINE_LITE=1 pip install -e . -v
 ```
 
 ## 验证安装
diff --git a/setup.py b/setup.py
index 1d358e14ca..127dcdc529 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,4 @@
+import os
 import re
 from setuptools import find_packages, setup  # type: ignore
 
@@ -106,20 +107,23 @@ def gen_packages_items():
     return packages
 
 
-install_requires = parse_requirements()
-try:
-    # OpenCV installed via conda.
-    import cv2  # NOQA: F401
-    major, minor, *rest = cv2.__version__.split('.')
-    if int(major) < 3:
-        raise RuntimeError(
-            f'OpenCV >=3 is required but {cv2.__version__} is installed')
-except ImportError:
-    # If first not installed install second package
-    CHOOSE_INSTALL_REQUIRES = [('opencv-python-headless>=3',
-                                'opencv-python>=3')]
-    for main, secondary in CHOOSE_INSTALL_REQUIRES:
-        install_requires.append(choose_requirement(main, secondary))
+if int(os.getenv('MMENGINE_LITE', '0')) == 1:
+    install_requires = parse_requirements('requirements/runtime_lite.txt')
+else:
+    install_requires = parse_requirements()
+    try:
+        # OpenCV installed via conda.
+        import cv2  # NOQA: F401
+        major, minor, *rest = cv2.__version__.split('.')
+        if int(major) < 3:
+            raise RuntimeError(
+                f'OpenCV >=3 is required but {cv2.__version__} is installed')
+    except ImportError:
+        # If first not installed install second package
+        CHOOSE_INSTALL_REQUIRES = [('opencv-python-headless>=3',
+                                    'opencv-python>=3')]
+        for main, secondary in CHOOSE_INSTALL_REQUIRES:
+            install_requires.append(choose_requirement(main, secondary))
 
 setup(
     name='mmengine',

From 2bf8df4fe4038669df2ef3eb872e6fdad32ae653 Mon Sep 17 00:00:00 2001
From: HAOCHENYE <21724054@zju.edu.cn>
Date: Thu, 21 Sep 2023 20:11:09 +0800
Subject: [PATCH 02/12] Fix

---
 .circleci/test.yml            | 8 ++++++--
 requirements/runtime_lite.txt | 7 +++++++
 2 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 requirements/runtime_lite.txt

diff --git a/.circleci/test.yml b/.circleci/test.yml
index 1f36405bd7..a06794c74c 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -73,7 +73,7 @@ jobs:
             pip --version
       - run:
           name: Build MMEngine from source
-          command: MMENGINE_LITE=1 pip install -e -v
+          command: MMENGINE_LITE=1 pip install -e . -v
       - run:
           name: Install unit tests dependencies
           command: pip install -r requirements/tests.txt
@@ -244,10 +244,14 @@ workflows:
             branches:
               ignore:
                 - main
+      - build_lite:
+          name: build lite
+          requires:
+            - lint
       - build_without_torch:
           name: build without torch
           requires:
-            - lint
+            - build_lite
       - build_cpu:
           name: minimum_version_cpu
           torch: 1.6.0
diff --git a/requirements/runtime_lite.txt b/requirements/runtime_lite.txt
new file mode 100644
index 0000000000..1c396a63d6
--- /dev/null
+++ b/requirements/runtime_lite.txt
@@ -0,0 +1,7 @@
+addict
+numpy
+pyyaml
+regex;sys_platform=='win32'
+rich
+termcolor
+yapf

From b9fb47d89912fa33df982ec6fd4aafb8eecff136 Mon Sep 17 00:00:00 2001
From: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>
Date: Sat, 7 Oct 2023 18:57:53 +0800
Subject: [PATCH 03/12] Update installation.md

---
 docs/en/get_started/installation.md | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/docs/en/get_started/installation.md b/docs/en/get_started/installation.md
index 3ed5e408a9..6ee0a0ab3a 100644
--- a/docs/en/get_started/installation.md
+++ b/docs/en/get_started/installation.md
@@ -26,6 +26,14 @@
 
 ## Install MMEngine
 
+:::{note}
+If you only want to use the fileio, registry, and config modules in MMEngine, you can set the `MMENGINE_LITE` environment variable, which will only install the few third-party library dependencies that are necessary (e.g., it will not install opencv, matplotlib):
+
+```bash
+MMENGINE_LITE=1 pip install mmengine
+```
+:::
+
 ### Install with mim
 
 [mim](https://github.com/open-mmlab/mim) is a package management tool for OpenMMLab projects, which can be used to install the OpenMMLab project easily.
@@ -35,17 +43,10 @@ pip install -U openmim
 mim install mmengine
 ```
 
-If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
-
-```bash
-MMENGINE_LITE=1 mim install mmengine
-```
-
 ### Install with pip
 
 ```bash
 pip install mmengine
-# MMENGINE_LITE=1 pip install mmengine
 ```
 
 ### Use docker images
@@ -71,9 +72,6 @@ pip install mmengine
 git clone https://github.com/open-mmlab/mmengine.git
 cd mmengine
 pip install -e . -v
-
-# If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
-# MMENGINE_LITE=1 pip install -e . -v
 ```
 
 ### Verify the Installation

From b52c526c294ad0647b0c8d0f4f45740fd3c5031a Mon Sep 17 00:00:00 2001
From: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>
Date: Sat, 7 Oct 2023 19:16:50 +0800
Subject: [PATCH 04/12] Update installation.md

---
 docs/zh_cn/get_started/installation.md | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/docs/zh_cn/get_started/installation.md b/docs/zh_cn/get_started/installation.md
index 969256f849..5ead92204e 100644
--- a/docs/zh_cn/get_started/installation.md
+++ b/docs/zh_cn/get_started/installation.md
@@ -26,6 +26,14 @@
 
 ## 安装 MMEngine
 
+:::{note}
+如果你只想使用 MMEngine 中的 fileio、registry 和 config 模块，你可以设置 `MMENGINE_LITE` 环境变量，它只会安装必须的几个第三方库依赖（例如不会安装 opencv、matplotlib）：
+
+```bash
+MMENGINE_LITE=1 pip install mmengine
+```
+:::
+
 ### 使用 mim 安装
 
 [mim](https://github.com/open-mmlab/mim) 是 OpenMMLab 项目的包管理工具，使用它可以很方便地安装 OpenMMLab 项目。
@@ -35,17 +43,10 @@ pip install -U openmim
 mim install mmengine
 ```
 
-如果你只想使用 MMEngine 中的 fileio、registry 和 configs，可以安装 mmengine lite：
-
-```bash
-MMENGINE_LITE=1 mim install mmengine
-```
-
 ### 使用 pip 安装
 
 ```bash
 pip install mmengine
-# MMENGINE_LITE=1 pip install mmengine
 ```
 
 ### 使用 docker 镜像
@@ -71,9 +72,6 @@ pip install mmengine
 git clone https://github.com/open-mmlab/mmengine.git
 cd mmengine
 pip install -e . -v
-
-# If you only want to use fileio, registry and configs in MMEngine, you can install mmengine lite:
-# MMENGINE_LITE=1 pip install -e . -v
 ```
 
 ## 验证安装

From 05e8e0f55c081721ebdadf4f850086dd0026320d Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 11:54:52 +0800
Subject: [PATCH 05/12] fix lint

---
 docs/en/get_started/installation.md    | 1 +
 docs/zh_cn/get_started/installation.md | 1 +
 2 files changed, 2 insertions(+)

diff --git a/docs/en/get_started/installation.md b/docs/en/get_started/installation.md
index 6ee0a0ab3a..4ae5e3cd7b 100644
--- a/docs/en/get_started/installation.md
+++ b/docs/en/get_started/installation.md
@@ -32,6 +32,7 @@ If you only want to use the fileio, registry, and config modules in MMEngine, yo
 ```bash
 MMENGINE_LITE=1 pip install mmengine
 ```
+
 :::
 
 ### Install with mim
diff --git a/docs/zh_cn/get_started/installation.md b/docs/zh_cn/get_started/installation.md
index 5ead92204e..56b1ed5169 100644
--- a/docs/zh_cn/get_started/installation.md
+++ b/docs/zh_cn/get_started/installation.md
@@ -32,6 +32,7 @@
 ```bash
 MMENGINE_LITE=1 pip install mmengine
 ```
+
 :::
 
 ### 使用 mim 安装

From 750f459684f3ca525840f3fd1032dd3fec679a5c Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 14:09:40 +0800
Subject: [PATCH 06/12] update

---
 .circleci/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index a06794c74c..1112d3e799 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -251,7 +251,7 @@ workflows:
       - build_without_torch:
           name: build without torch
           requires:
-            - build_lite
+            - lint
       - build_cpu:
           name: minimum_version_cpu
           torch: 1.6.0

From 34bc92de7cebc6675213556b7731f8a6830a5ccc Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 14:16:17 +0800
Subject: [PATCH 07/12] update

---
 .circleci/test.yml                                        | 2 +-
 tests/test_fileio/test_backends/test_http_backend.py      | 2 +-
 tests/test_fileio/test_backends/test_lmdb_backend.py      | 2 +-
 tests/test_fileio/test_backends/test_local_backend.py     | 2 +-
 tests/test_fileio/test_backends/test_memcached_backend.py | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index 1112d3e799..a06794c74c 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -251,7 +251,7 @@ workflows:
       - build_without_torch:
           name: build without torch
           requires:
-            - lint
+            - build_lite
       - build_cpu:
           name: minimum_version_cpu
           torch: 1.6.0
diff --git a/tests/test_fileio/test_backends/test_http_backend.py b/tests/test_fileio/test_backends/test_http_backend.py
index c69394d147..5e2ba778b3 100644
--- a/tests/test_fileio/test_backends/test_http_backend.py
+++ b/tests/test_fileio/test_backends/test_http_backend.py
@@ -2,13 +2,13 @@
 from pathlib import Path
 from unittest import TestCase
 
-import cv2
 import numpy as np
 
 from mmengine.fileio.backends import HTTPBackend
 
 
 def imfrombytes(content):
+    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_lmdb_backend.py b/tests/test_fileio/test_backends/test_lmdb_backend.py
index dc2c7ded2b..4ec43437cf 100644
--- a/tests/test_fileio/test_backends/test_lmdb_backend.py
+++ b/tests/test_fileio/test_backends/test_lmdb_backend.py
@@ -2,7 +2,6 @@
 from pathlib import Path
 from unittest import TestCase
 
-import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -10,6 +9,7 @@
 
 
 def imfrombytes(content):
+    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_local_backend.py b/tests/test_fileio/test_backends/test_local_backend.py
index 427ebf789a..cb0a8796c9 100644
--- a/tests/test_fileio/test_backends/test_local_backend.py
+++ b/tests/test_fileio/test_backends/test_local_backend.py
@@ -9,7 +9,6 @@
 from unittest import TestCase
 from unittest.mock import patch
 
-import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -17,6 +16,7 @@
 
 
 def imfrombytes(content):
+    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_memcached_backend.py b/tests/test_fileio/test_backends/test_memcached_backend.py
index d320fcb16b..8c6acdb07f 100644
--- a/tests/test_fileio/test_backends/test_memcached_backend.py
+++ b/tests/test_fileio/test_backends/test_memcached_backend.py
@@ -4,7 +4,6 @@
 from unittest import TestCase
 from unittest.mock import MagicMock, patch
 
-import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -12,6 +11,7 @@
 
 
 def imfrombytes(content):
+    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img

From 82036256a69f817bfe570085384f89d500d4d679 Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 14:20:19 +0800
Subject: [PATCH 08/12] update

---
 .circleci/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index a06794c74c..1112d3e799 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -251,7 +251,7 @@ workflows:
       - build_without_torch:
           name: build without torch
           requires:
-            - build_lite
+            - lint
       - build_cpu:
           name: minimum_version_cpu
           torch: 1.6.0

From b8f01b22756a9e9ac8526e63bae16fa6f28c8285 Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 14:30:01 +0800
Subject: [PATCH 09/12] update

---
 .circleci/test.yml                                        | 2 +-
 tests/test_fileio/test_backends/test_http_backend.py      | 2 +-
 tests/test_fileio/test_backends/test_lmdb_backend.py      | 2 +-
 tests/test_fileio/test_backends/test_local_backend.py     | 2 +-
 tests/test_fileio/test_backends/test_memcached_backend.py | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index 1112d3e799..71ea346c14 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -79,7 +79,7 @@ jobs:
           command: pip install -r requirements/tests.txt
       - run:
           name: Run unit tests
-          command: pytest tests/test_config tests/test_registry tests/test_fileio tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils
+          command: pytest tests/test_config tests/test_registry tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils
 
   build_cpu:
     parameters:
diff --git a/tests/test_fileio/test_backends/test_http_backend.py b/tests/test_fileio/test_backends/test_http_backend.py
index 5e2ba778b3..c69394d147 100644
--- a/tests/test_fileio/test_backends/test_http_backend.py
+++ b/tests/test_fileio/test_backends/test_http_backend.py
@@ -2,13 +2,13 @@
 from pathlib import Path
 from unittest import TestCase
 
+import cv2
 import numpy as np
 
 from mmengine.fileio.backends import HTTPBackend
 
 
 def imfrombytes(content):
-    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_lmdb_backend.py b/tests/test_fileio/test_backends/test_lmdb_backend.py
index 4ec43437cf..dc2c7ded2b 100644
--- a/tests/test_fileio/test_backends/test_lmdb_backend.py
+++ b/tests/test_fileio/test_backends/test_lmdb_backend.py
@@ -2,6 +2,7 @@
 from pathlib import Path
 from unittest import TestCase
 
+import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -9,7 +10,6 @@
 
 
 def imfrombytes(content):
-    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_local_backend.py b/tests/test_fileio/test_backends/test_local_backend.py
index cb0a8796c9..427ebf789a 100644
--- a/tests/test_fileio/test_backends/test_local_backend.py
+++ b/tests/test_fileio/test_backends/test_local_backend.py
@@ -9,6 +9,7 @@
 from unittest import TestCase
 from unittest.mock import patch
 
+import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -16,7 +17,6 @@
 
 
 def imfrombytes(content):
-    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img
diff --git a/tests/test_fileio/test_backends/test_memcached_backend.py b/tests/test_fileio/test_backends/test_memcached_backend.py
index 8c6acdb07f..d320fcb16b 100644
--- a/tests/test_fileio/test_backends/test_memcached_backend.py
+++ b/tests/test_fileio/test_backends/test_memcached_backend.py
@@ -4,6 +4,7 @@
 from unittest import TestCase
 from unittest.mock import MagicMock, patch
 
+import cv2
 import numpy as np
 from parameterized import parameterized
 
@@ -11,7 +12,6 @@
 
 
 def imfrombytes(content):
-    import cv2
     img_np = np.frombuffer(content, np.uint8)
     img = cv2.imdecode(img_np, cv2.IMREAD_COLOR)
     return img

From d1fe331eb050762f39c72de13d74d15eb9319427 Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 15:53:56 +0800
Subject: [PATCH 10/12] update

---
 .circleci/test.yml                   |  2 +-
 requirements/tests_lite.txt          |  2 ++
 tests/test_logging/test_logger.py    |  2 ++
 tests/test_registry/test_registry.py |  8 +++-----
 tests/test_utils/test_misc.py        | 15 +++++++++------
 5 files changed, 17 insertions(+), 12 deletions(-)
 create mode 100644 requirements/tests_lite.txt

diff --git a/.circleci/test.yml b/.circleci/test.yml
index 71ea346c14..779045ffdb 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -76,7 +76,7 @@ jobs:
           command: MMENGINE_LITE=1 pip install -e . -v
       - run:
           name: Install unit tests dependencies
-          command: pip install -r requirements/tests.txt
+          command: pip install -r requirements/tests_lite.txt
       - run:
           name: Run unit tests
           command: pytest tests/test_config tests/test_registry tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils
diff --git a/requirements/tests_lite.txt b/requirements/tests_lite.txt
new file mode 100644
index 0000000000..c4090fd237
--- /dev/null
+++ b/requirements/tests_lite.txt
@@ -0,0 +1,2 @@
+parameterized
+pytest
diff --git a/tests/test_logging/test_logger.py b/tests/test_logging/test_logger.py
index 5dd264e9e1..2ac2b3548e 100644
--- a/tests/test_logging/test_logger.py
+++ b/tests/test_logging/test_logger.py
@@ -11,6 +11,7 @@
 
 from mmengine.logging import MMLogger, print_log
 from mmengine.logging.logger import _get_device_id
+from mmengine.utils import is_installed
 
 
 class TestLogger:
@@ -237,6 +238,7 @@ def test_file_handlers(self, tmp_path):
         MMLogger._instance_dict.clear()
 
 
+@pytest.mark.skipif(not is_installed('torch'), reason='tests requires torch')
 @patch('torch.cuda.device_count', lambda: 4)
 def test_get_device_id():
 
diff --git a/tests/test_registry/test_registry.py b/tests/test_registry/test_registry.py
index 6a902c5b71..eb99b3dc8e 100644
--- a/tests/test_registry/test_registry.py
+++ b/tests/test_registry/test_registry.py
@@ -7,7 +7,7 @@
 from mmengine.config import Config, ConfigDict  # type: ignore
 from mmengine.registry import (DefaultScope, Registry, build_from_cfg,
                                build_model_from_cfg)
-from mmengine.utils import ManagerMixin
+from mmengine.utils import ManagerMixin, is_installed
 
 
 class TestRegistry:
@@ -637,11 +637,9 @@ def __init__(self, name):
     Visualizer.get_current_instance()
 
 
+@pytest.mark.skipif(not is_installed('torch'), reason='tests requires torch')
 def test_build_model_from_cfg():
-    try:
-        import torch.nn as nn
-    except ImportError:
-        pytest.skip('require torch')
+    import torch.nn as nn
 
     BACKBONES = Registry('backbone', build_func=build_model_from_cfg)
 
diff --git a/tests/test_utils/test_misc.py b/tests/test_utils/test_misc.py
index 580a3f2d73..7c43d04853 100644
--- a/tests/test_utils/test_misc.py
+++ b/tests/test_utils/test_misc.py
@@ -4,9 +4,9 @@
 
 import numpy as np
 import pytest
-import torch
 
 from mmengine import MMLogger
+from mmengine.utils import is_installed
 # yapf: disable
 from mmengine.utils.misc import (apply_to, concat_list, deprecated_api_warning,
                                  deprecated_function, get_object_from_string,
@@ -290,7 +290,10 @@ def deprecated_demo1():
     assert expected_docstring.strip(' ') == deprecated_demo1.__doc__
 
 
+@pytest.mark.skipif(not is_installed('torch'), reason='tests requires torch')
 def test_apply_to():
+    import torch
+
     # Test only apply `+1` to int object.
     data = dict(a=1, b=2.0)
     result = apply_to(data, lambda x: isinstance(x, int), lambda x: x + 1)
@@ -332,9 +335,9 @@ def test_apply_to():
 
 def test_locate():
     assert get_object_from_string('a.b.c') is None
-    model_module = import_module('mmengine.model')
-    assert get_object_from_string('mmengine.model') is model_module
+    config_module = import_module('mmengine.config')
+    assert get_object_from_string('mmengine.config') is config_module
     assert get_object_from_string(
-        'mmengine.model.BaseModel') is model_module.BaseModel
-    assert get_object_from_string('mmengine.model.BaseModel.forward') is \
-        model_module.BaseModel.forward
+        'mmengine.config.Config') is config_module.Config
+    assert get_object_from_string('mmengine.config.Config.fromfile') is \
+        config_module.Config.fromfile

From 70e0e6f9def6a4977aa87b1b2a628a0326f4ee6f Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 16:12:01 +0800
Subject: [PATCH 11/12] update

---
 .circleci/test.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/test.yml b/.circleci/test.yml
index 779045ffdb..78f8da28a9 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -49,7 +49,7 @@ jobs:
           command: pip install -e . -v
       - run:
           name: Install unit tests dependencies
-          command: pip install -r requirements/tests.txt
+          command: pip install -r requirements/tests_lite.txt
       - run:
           name: Run unit tests
           command: pytest tests/test_config tests/test_registry tests/test_fileio tests/test_logging tests/test_utils --ignore=tests/test_utils/test_dl_utils

From 8d63e7ef9683f811217ad687d7c974cdf816f976 Mon Sep 17 00:00:00 2001
From: zhouzaida <zhouzaida@163.com>
Date: Sun, 8 Oct 2023 16:17:30 +0800
Subject: [PATCH 12/12] update

---
 requirements/tests_lite.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/requirements/tests_lite.txt b/requirements/tests_lite.txt
index c4090fd237..9e8922d300 100644
--- a/requirements/tests_lite.txt
+++ b/requirements/tests_lite.txt
@@ -1,2 +1,3 @@
+lmdb
 parameterized
 pytest