[ci] use GitHub Actions for R CI jobs (fixes #2353)

.ci/setup.sh

@@ -36,12 +36,12 @@ else  # Linux
         mv $AMDAPPSDK_PATH/lib/x86_64/sdk/* $AMDAPPSDK_PATH/lib/x86_64/
         echo libamdocl64.so > $OPENCL_VENDOR_PATH/amdocl64.icd
     fi
-    if [[ $TRAVIS == "true" ]]; then
+    if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIONS == "true" ]]; then
         wget -q -O conda.sh https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
     fi
 fi
 
-if [[ $TRAVIS == "true" ]] || [[ $OS_NAME == "macos" ]]; then
+if [[ $TRAVIS == "true" ]] || [[ $GITHUB_ACTIONS == "true" ]] || [[ $OS_NAME == "macos" ]]; then
     sh conda.sh -b -p $CONDA
 fi
 conda config --set always_yes yes --set changeps1 no

.ci/test_r_package.sh

@@ -13,7 +13,7 @@ export PATH="$R_LIB_PATH/R/bin:$PATH"
 #
 # This only needs to get run on Travis because R environment for Linux
 # used by Azure pipelines is set up in https://github.com/guolinke/lightgbm-ci-docker
-if [[ $TRAVIS == "true" ]] && [[ $OS_NAME == "linux" ]]; then
+if [[ $AZURE != "true" ]] && [[ $OS_NAME == "linux" ]]; then
     sudo apt-key adv \
         --keyserver keyserver.ubuntu.com \
         --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
@@ -23,7 +23,7 @@ if [[ $TRAVIS == "true" ]] && [[ $OS_NAME == "linux" ]]; then
     sudo apt-get install \
         --no-install-recommends \
         -y \
-            r-base-dev=${R_TRAVIS_LINUX_VERSION} \
+            r-base-dev=${R_LINUX_VERSION} \
             texinfo \
             texlive-latex-recommended \
             texlive-fonts-recommended \

.github/workflows/main.yml

@@ -0,0 +1,57 @@
+name: GitHub Actions
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  test:
+    name: ${{ matrix.task }} (${{ matrix.os }}, ${{ matrix.compiler }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            task: r-package
+            compiler: gcc
+          - os: ubuntu-latest
+            task: r-package
+            compiler: clang
+          - os: macOS-latest
+            task: r-package
+            compiler: gcc
+          - os: macOS-latest
+            task: r-package
+            compiler: clang
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 5
+          submodules: true
+      - name: Setup and run tests on Linux and macOS
+        if: matrix.os != 'windows-latest'
+        shell: bash
+        run: |
+          export TASK="${{ matrix.task }}"
+          export COMPILER="${{ matrix.compiler }}"
+          export GITHUB_ACTIONS="true"
+          if [[ "${{ matrix.os }}" == "macOS-latest" ]]; then
+              export OS_NAME="macos"
+              export R_MAC_VERSION=3.6.3
+          elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
+              export OS_NAME="linux"
+              export R_LINUX_VERSION=3.6.3-1bionic;
+          fi
+          export BUILD_DIRECTORY="$GITHUB_WORKSPACE"
+          export CONDA_ENV="test-env"
+          export CONDA="$HOME/miniconda"
+          export PATH="$CONDA/bin:${HOME}/.local/bin:$PATH"
+          export LGB_VER=$(head -n 1 VERSION.txt)
+          $GITHUB_WORKSPACE/.ci/setup.sh
+          $GITHUB_WORKSPACE/.ci/test.sh

.travis.yml

@@ -24,7 +24,6 @@ env:
     - TASK=mpi METHOD=pip PYTHON_VERSION=3.7
     - TASK=gpu METHOD=source PYTHON_VERSION=3.5
     - TASK=gpu METHOD=pip PYTHON_VERSION=3.6
-    - TASK=r-package
 
 matrix:
   exclude:
@@ -44,11 +43,9 @@ before_install:
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then
         export OS_NAME="macos";
         export COMPILER="gcc";
-        export R_MAC_VERSION=3.6.3;
     else
         export OS_NAME="linux";
         export COMPILER="clang";
-        export R_TRAVIS_LINUX_VERSION=3.6.3-1bionic;
     fi
   - export CONDA="$HOME/miniconda"
   - export PATH="$CONDA/bin:$PATH"

.vsts-ci.yml

@@ -22,7 +22,7 @@ jobs:
     vmImage: 'ubuntu-latest'
   container: ubuntu1404
   strategy:
-    maxParallel: 7
+    maxParallel: 6
     matrix:
       regular:
         TASK: regular
@@ -41,8 +41,6 @@ jobs:
         TASK: gpu
         METHOD: source
         PYTHON_VERSION: 3.6
-      r_package:
-        TASK: r-package
   steps:
   - script: |
       echo "##vso[task.setvariable variable=BUILD_DIRECTORY]$BUILD_SOURCESDIRECTORY"
@@ -74,7 +72,7 @@ jobs:
   pool:
     vmImage: 'macOS-10.14'
   strategy:
-    maxParallel: 4
+    maxParallel: 3
     matrix:
       regular:
         TASK: regular
@@ -84,8 +82,6 @@ jobs:
         PYTHON_VERSION: 3.5
       bdist:
         TASK: bdist
-      r_package:
-        TASK: r-package
   steps:
   - script: |
       echo "##vso[task.setvariable variable=BUILD_DIRECTORY]$BUILD_SOURCESDIRECTORY"
@@ -96,7 +92,6 @@ jobs:
       echo "##vso[task.setvariable variable=CONDA]$CONDA"
       echo "##vso[task.prependpath]$CONDA/bin"
       echo "##vso[task.setvariable variable=JAVA_HOME]$JAVA_HOME_8_X64"
-      echo "##vso[task.setvariable variable=R_MAC_VERSION]3.6.3"
     displayName: 'Set variables'
   - bash: $(Build.SourcesDirectory)/.ci/setup.sh
     displayName: Setup