Add Slurm Docker tests (#154)

* Add Slurm Docker tests

Start on #105, alternative to #125

Uses container from https://github.com/giovtorres/docker-centos7-slurm

* test more combinations

* sbatch output

.github/workflows/UnitTests.yml

@@ -0,0 +1,57 @@
+name: Unit Tests
+
+on:
+  pull_request:
+
+  push:
+    branches:
+      - master
+
+jobs:
+  test-slurm:
+    timeout-minutes: 20
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        julia_version: ["1.5", "nightly"]
+        julia_arch: [x64]
+      fail-fast: false
+
+    runs-on: ${{ matrix.os }}
+
+    env:
+      SLURM: "latest"
+
+    steps:
+    - name: Checkout
+      uses: actions/[email protected]
+
+    - uses: julia-actions/setup-julia@latest
+      with:
+        arch: ${{ matrix.julia_arch }}
+        version: ${{ matrix.julia_version }}
+
+    - name: Start Slurm Docker image
+      run: |
+        docker pull giovtorres/docker-centos7-slurm:$SLURM
+        docker run -d -it -h ernie -v $(pwd):/SlurmTools -v $(julia -e 'print(dirname(Sys.BINDIR))'):/julia --name slurm-$SLURM giovtorres/docker-centos7-slurm:$SLURM
+
+    - name: Instantiate package
+      run: docker exec slurm-$SLURM /julia/bin/julia --project=/SlurmTools -e 'using Pkg; Pkg.instantiate(verbose=true); Pkg.build(verbose=true)'
+
+    - name: Run tests without allocation
+      run: docker exec slurm-$SLURM /julia/bin/julia --project=/SlurmTools -e 'using Pkg; Pkg.test(test_args=["slurm"])'
+
+    - name: Run tests inside allocation
+      run: docker exec slurm-$SLURM salloc -t 00:10:00 -n 2 /julia/bin/julia --project=/SlurmTools -e 'using Pkg; Pkg.test(test_args=["slurm"])'
+
+    - name: Run tests inside sbatch
+      run: |
+         cat << EOF > sbatch.sh
+         #!/bin/bash
+         #SBATCH --ntasks=2
+         #SBATCH --time=00:10:00
+         /julia/bin/julia --project=/SlurmTools -e 'using Pkg; Pkg.test(test_args=["slurm"])'
+         EOF
+         docker exec slurm-$SLURM sbatch --wait --output=/SlurmTools/output --error=/SlurmTools/output /SlurmTools/sbatch.sh
+         cat output

test/runtests.jl

@@ -18,6 +18,19 @@ using Distributed
     wait(rmprocs(workers()))
 end
 
+if "slurm" in ARGS
+    @testset "Slurm" begin
+        p = addprocs_slurm(1)
+        @test nprocs() == 2
+        @test workers() == p
+        @test fetch(@spawnat :any myid()) == p[1]
+        @test remotecall_fetch(+,p[1],1,1) == 2
+        rmprocs(p)
+        @test nprocs() == 1
+        @test workers() == [1]
+    end
+end
+
 @static if Sys.iswindows()
     windows_which(command) = `powershell.exe -Command Get-Command $command`
     is_lsf_installed() = success(windows_which("bsub.exe"))