github: add CI action

.github/workflows/ci.yml

@@ -0,0 +1,83 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    name: Build
+    strategy:
+      matrix:
+        go-version: [1.15.x, 1.14.x]
+        platform: [ubuntu-latest, macos-latest]
+        env:
+          - TAGS=""
+          - TAGS="-tags bounds"
+          - TAGS="-tags noasm"
+          - TAGS="-tags safe"
+          - FORCE_GOARCH=386
+        exclude:
+          - platform: macos-latest
+            env: TAGS="-tags bounds"
+          - platform: macos-latest
+            env: TAGS="-tags noasm"
+          - platform: macos-latest
+            env: TAGS="-tags safe"
+          - platform: macos-latest
+            env: FORCE_GOARCH=386
+
+    runs-on: ${{ matrix.platform }}
+    env:
+        GO111MODULE: on
+        GOPATH: ${{ github.workspace }}
+    defaults:
+        run:
+            working-directory: ${{ env.GOPATH }}/src/gonum.org/v1/gonum
+
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Cache-Go
+      uses: actions/cache@v1
+      with:
+        path: |
+            ~/go/pkg/mod              # Module download cache
+            ~/.cache/go-build         # Build cache (Linux)
+            ~/Library/Caches/go-build # Build cache (Mac)
+            '%LocalAppData%\go-build' # Build cache (Windows)
+
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+
+    - name: Checkout code
+      uses: actions/checkout@v2
+      with:
+          path: ${{ env.GOPATH }}/src/gonum.org/v1/gonum
+
+    - name: Check copyrights+imports+formatting+generate
+      if: matrix.platform == 'ubuntu-latest' && matrix.tags == ''
+      run: |
+        ./.travis/script.d/deps.sh
+        ./.travis/script.d/check-copyright.sh
+        ./.travis/script.d/check-imports.sh
+        ./.travis/script.d/check-formatting.sh
+        ./.travis/script.d/check-generate.sh
+
+    - name: Test
+      run: |
+        ./.travis/script.d/test.sh
+
+    - name: Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      run: |
+        ./.github/workflows/test-coverage.sh
+
+    - name: Upload-Coverage
+      if: matrix.platform == 'ubuntu-latest'
+      uses: codecov/codecov-action@v1

.github/workflows/test-coverage.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+MODE=set
+PROFILE_OUT="${PWD}/profile.out"
+ACC_OUT="${PWD}/coverage.txt"
+
+testCover() {
+    # set the return value to 0 (successful)
+    retval=0
+    # get the directory to check from the parameter. Default to '.'
+    d=${1:-.}
+    # skip if there are no Go files here
+    ls $d/*.go &> /dev/null || return $retval
+    # switch to the directory to check
+    pushd $d > /dev/null
+    # create the coverage profile
+    coverageresult=$(go test $TAGS -coverprofile="${PROFILE_OUT}" -covermode=${MODE})
+    # output the result so we can check the shell output
+    echo ${coverageresult}
+    # append the results to acc.out if coverage didn't fail, else set the retval to 1 (failed)
+    ( [[ ${coverageresult} == *FAIL* ]] && retval=1 ) || ( [ -f "${PROFILE_OUT}" ] && grep -v "mode: ${MODE}" "${PROFILE_OUT}" >> "${ACC_OUT}" )
+    # return to our working dir
+    popd > /dev/null
+    # return our return value
+    return $retval
+}
+
+# Init coverage.txt
+echo "mode: ${MODE}" > $ACC_OUT
+
+# Run test coverage on all directories containing go files except testlapack, testblas, testgraph and testrand.
+find . -type d -not -path '*testlapack*' -and -not -path '*testblas*' -and -not -path '*testgraph*' -and -not -path '*testrand*' | while read d; do testCover $d || exit; done

.travis/script.d/check-generate.sh

@@ -15,3 +15,6 @@ if [ -n "$(git diff)" ]; then
 	git diff
 	exit 1
 fi
+
+rm -rf *
+git reset --hard