install go 1.14 on windows

.circleci/config.yml

@@ -4,6 +4,9 @@ orbs:
   win: circleci/windows@2.2.0
 
 commands:
+  win_install_go:
+    steps:
+      - run: .\scripts\install_go.ps1
   go_build:
     steps:
       - run: go build ./...
@@ -16,12 +19,14 @@ jobs:
     executor:
       name: win/default
     steps:
+      - win_install_go
       - checkout
       - go_build
   wintest:
     executor:
       name: win/default
     steps:
+      - win_install_go
       - checkout
       - go_test
 

scripts/install_go.ps1

@@ -0,0 +1,13 @@
+# Download the file to a specific location
+$clnt = new-object System.Net.WebClient
+$url = "https://golang.org/dl/go1.14.6.windows-amd64.zip"
+$file = "c:\go.zip"
+$clnt.DownloadFile($url,$file)
+
+# Unzip the file to specified location
+$shell_app=new-object -com shell.application
+$zip_file = $shell_app.namespace($file)
+$destination = $shell_app.namespace("c:\Go")
+$destination.Copyhere($zip_file.items())
+
+$env:Path += ";c:\Go\bin"