[pull] master from walkframe:master

.github/workflows/python.yaml

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+name: python
+on:
+  push:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.11"]
+    defaults:
+      run:
+        working-directory: python
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: setup
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: install
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -r ci_requirements.txt
+      - name: test
+        run: |
+          pytest --cov=covertable --cov-report=xml
+      - name: codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: ./python/coverage.xml
+          verbose: true
+
+  release:
+    needs: tests
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: python
+    if: github.ref == 'refs/heads/master'
+    name: pypi upload
+    steps:
+      - uses: actions/checkout@v3
+      - name: setup
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - name: install
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -r  ci_requirements.txt
+      - name: build
+        run: |
+          python -m build --sdist --wheel --outdir dist/ .
+      - name: upload
+        run: |
+          twine upload dist/* --non-interactive --skip-existing
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}

.github/workflows/typescript.yaml

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+name: typescript
+on:
+  push:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: typescript
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: setup
+        uses: actions/setup-node@v3
+        with:
+          node-version: "16"
+      - name: cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            node_modules
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+      - name: install
+        run: |
+          npm install
+      - name: test
+        run: |
+          npm test -- --coverage
+          # npm run codecov
+      - name: codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: ./typescript/coverage/lcov.info
+          verbose: true
+
+  release:
+    needs: tests
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: typescript
+
+    if: github.ref == 'refs/heads/master'
+    name: npm upload
+    steps:
+      - uses: actions/checkout@v3
+      - name: setup
+        uses: actions/setup-node@v3
+        with:
+          node-version: "16"
+      - name: cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            node_modules
+          key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+      - name: upload
+        run: |
+          npm install
+          npm run build
+          echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}" > .npmrc
+          npm publish || true
+

README.md

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+# CoverTable
+
+![covertable logo](./covertable.png)
+
+Time is limited.
+
+Creating a test case that satisfies all possible factors is often unrealistic and, more importantly, tedious.
+
+Save time with CoverTable, a flexible pairwise tool that generates combinations covering two (or more) factors.
+
+## Implementations
+
+CoverTable is available in two implementations, with TypeScript as the primary focus and Python offered as a secondary option.
+
+### TypeScript
+
+[![NPM Version](https://badge.fury.io/js/covertable.svg)](https://badge.fury.io/js/covertable) [![Build Status](https://github.com/walkframe/covertable/actions/workflows/typescript.yaml/badge.svg)](https://github.com/walkframe/covertable/actions/workflows/typescript.yaml)
+
+- [README](https://github.com/walkframe/covertable/blob/master/typescript/README.md)
+- [History](https://github.com/walkframe/covertable/blob/master/typescript/history.md)
+
+### Python (Legacy Support)
+
+[![PyPI Version](https://badge.fury.io/py/covertable.svg)](https://badge.fury.io/py/covertable) [![Build Status](https://github.com/walkframe/covertable/actions/workflows/python.yaml/badge.svg)](https://github.com/walkframe/covertable/actions/workflows/python.yaml)
+
+- [README](https://github.com/walkframe/covertable/blob/master/python/README.rst)
+- [History](https://github.com/walkframe/covertable/blob/master/python/history.md)
+
+
+For more details, please refer to the links above.
+
+## Performance
+
+> **Note:**  
+> The following data was measured in Python 3.7.7 on a `3.1 GHz 6-Core Intel Core i5`.  
+> The coverage number is `2`.
+
+| Combination       | Default                             | Minimum case                          | Fastest case                       |
+|-------------------|-------------------------------------|---------------------------------------|------------------------------------|
+| **3^4**           | num: `9` <br> time: `0.0006s`       | num: `9` <br> time: `0.0006s`         | num: `14` <br> time: `0.0005s`     |
+| **3^13**          | num: `19` <br> time: `0.03s`        | num: `17` <br> time: `0.03s`          | num: `21` <br> time: `0.003s`      |
+| **4^15 + 3^17 + 2^29** | num: `36` <br> time: `7.41s`   | num: `34` <br> time: `7.47s`          | num: `42` <br> time: `0.40s`       |
+| **4^1 + 3^39 + 2^35**  | num: `27` <br> time: `15.19s`  | num: `26` <br> time: `14.70s`         | num: `30` <br> time: `0.51s`       |
+| **2^100**         | num: `14` <br> time: `23.97s`       | num: `12` <br> time: `0.63s`          | num: `13` <br> time: `0.48s`       |
+| **10^20**         | num: `198` <br> time: `14.28s`      | num: `195` <br> time: `14.48s`        | num: `284` <br> time: `0.53s`      |
+
+In general, as the number of elements or coverage increases, the number of combinations tends to increase significantly.
+
+## Tolerance
+
+If you use the `greedy` criterion and specify a positive integer for the `tolerance` option, you can increase speed at the expense of the number of combinations.
+
+The greater the `tolerance`, the faster the speed and the larger the number of combinations.
+
+### Example: 10^20 Test Cases
+
+| Tolerance | num  | time   |
+|-----------|------|--------|
+| 0 (default) | `195` | `14.48s` |
+| 1         | `199` | `12.45s` |
+| 2         | `201` | `9.48s`  |
+| 3         | `201` | `7.17s`  |
+| 4         | `207` | `5.70s`  |
+| 5         | `212` | `4.58s`  |
+| 6         | `212` | `3.65s`  |
+| 7         | `216` | `3.07s`  |
+| 8         | `223` | `2.57s`  |
+| 9         | `226` | `2.14s`  |
+| 10        | `233` | `1.84s`  |
+| 11        | `237` | `1.61s`  |
+| 12        | `243` | `1.43s`  |
+| 13        | `249` | `1.28s`  |
+| 14        | `254` | `1.19s`  |
+
+