windows support for plugin ipc (#7251)

* windows support for plugin ipc

* unix test fix

plugin/rpcplugin/supervisor_test.go

@@ -18,7 +18,7 @@ func TestSupervisor(t *testing.T) {
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 
-	backend := filepath.Join(dir, "backend")
+	backend := filepath.Join(dir, "backend.exe")
 	compileGo(t, `
 		package main
 
@@ -42,7 +42,7 @@ func TestSupervisor(t *testing.T) {
 		}
 	`, backend)
 
-	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend"}}`), 0600)
+	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend.exe"}}`), 0600)
 
 	bundle := plugin.BundleInfoForPath(dir)
 	supervisor, err := SupervisorProvider(bundle)
@@ -58,7 +58,7 @@ func TestSupervisor_StartTimeout(t *testing.T) {
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 
-	backend := filepath.Join(dir, "backend")
+	backend := filepath.Join(dir, "backend.exe")
 	compileGo(t, `
 		package main
 
@@ -68,7 +68,7 @@ func TestSupervisor_StartTimeout(t *testing.T) {
 		}
 	`, backend)
 
-	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend"}}`), 0600)
+	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend.exe"}}`), 0600)
 
 	bundle := plugin.BundleInfoForPath(dir)
 	supervisor, err := SupervisorProvider(bundle)
@@ -82,7 +82,7 @@ func TestSupervisor_PluginCrash(t *testing.T) {
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 
-	backend := filepath.Join(dir, "backend")
+	backend := filepath.Join(dir, "backend.exe")
 	compileGo(t, `
 		package main
 
@@ -109,7 +109,7 @@ func TestSupervisor_PluginCrash(t *testing.T) {
 		}
 	`, backend)
 
-	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend"}}`), 0600)
+	ioutil.WriteFile(filepath.Join(dir, "plugin.json"), []byte(`{"id": "foo", "backend": {"executable": "backend.exe"}}`), 0600)
 
 	bundle := plugin.BundleInfoForPath(dir)
 	supervisor, err := SupervisorProvider(bundle)