Add newer Ubuntu and Golang versions to testmatrix

Also, GO111MODULE should default to on since 1.13 anyways. And our makefile
installs goversioninfo itself. Also separate tests form building.

Author: dragetd

.github/workflows/test.yml

@@ -8,44 +8,36 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.13.x]
-        platform: [ubuntu-18.04, macOS-10.15, windows-2019]
+        go-version: [ '1.13', '1.16' ]
+        platform: [ ubuntu-18.04, ubuntu-20.04, macOS-10.15, windows-2019 ]
     runs-on: ${{ matrix.platform }}
     env:
-      GO111MODULE: "on"
+      GOPATH: "${HOME}/go"
+      PATH: "${PATH}:${GOPATH}/bin"
 
     steps:
       - name: Install Go
         uses: actions/[email protected]
         with:
           go-version: ${{ matrix.go-version }}
       - name: Install libgtk-3-dev
-        if: matrix.platform == 'ubuntu-18.04'
-        run: |
-          sudo apt-get update -y
-          sudo apt-get install -y libgtk-3-dev
+        if: startsWith(matrix.os, 'ubuntu')
+        run: sudo apt-get update -y && sudo apt-get install -y libgtk-3-dev
       - name: Install UPX (Linux)
-        if: matrix.platform == 'ubuntu-18.04'
-        run: sudo apt-get update && sudo apt-get install upx-ucl
+        if: startsWith(matrix.os, 'ubuntu')
+        run: sudo apt-get update -y && sudo apt-get install -y upx-ucl
       - name: Install UPX (Windows)
-        if: matrix.platform == 'windows-2019'
+        if: startsWith(matrix.os, 'windows')
         run: choco install upx -y
-      - name: Install goversioninfo
-        shell: bash
-        run: |
-          export GOPATH="${HOME}/go"
-          mkdir -p ${GOPATH}/bin
-          mkdir -p ${GOPATH}/pkg
-          mkdir -p ${GOPATH}/src
-          go get github.com/josephspurrier/goversioninfo/cmd/goversioninfo@63e6d1acd3dd857ec6b8c54fbf52e10ce24a8786
       - name: Checkout repository
         uses: actions/[email protected]
-      - name: Test and build
+      - name: Build
         shell: bash
         run: |
-          export GOPATH="${HOME}/go"
-          export PATH="${GOPATH}/bin:${PATH}"
-          make test
           make copy-test-files
           make
           make tools
+      - name: Test
+        shell: bash
+        run: |
+          make test