add action Build

.github/workflows/unit_test.yml

@@ -0,0 +1,38 @@
+name: Build
+
+on:
+  - push
+      # branches: [main, development]
+  - pull_request
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # os: [ubuntu-latest, macOS-latest]
+        os: [macOS-latest]
+        #python-version: ['3.6']
+        python-version: ['3.7', '3.8']
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+        pip install -e .
+    - name: coverall
+      run: |
+        pip install coveralls
+        pip install pytest-cover
+    - name: run pytest
+      run: |
+        py.test tods/tests/ --cov=tods
+        coveralls
+    - name: codecov
+      uses: codecov/codecov-action@v1

README.md

@@ -2,7 +2,9 @@
 
 <img width="500" src="./docs/img/tods_logo.png" alt="Logo" />
 
-[![Build Status](https://travis-ci.org/datamllab/tods.svg?branch=master)](https://travis-ci.org/datamllab/tods)
+[![Actions Status](https://github.com/datamllab/tods/workflows/Build/badge.svg)](https://github.com/datamllab/tods/actions)
+
+[![codecov](https://codecov.io/gh/datamllab/tods/branch/dev/graph/badge.svg?token=M90ZCVTRBF)](https://codecov.io/gh/datamllab/tods)
 
 [中文文档](README.zh-CN.md)