fix: improve error message when _session_store is missing from context (

#67)

* fix: add proper error message when _session_store is missing from context

We need to know when _session_store is missing from context and the session
middleware is not properly initialized.

session/session.go

@@ -36,7 +36,7 @@ var (
 func Get(name string, c echo.Context) (*sessions.Session, error) {
  s := c.Get(key)
  if s == nil {
- return nil, fmt.Errorf("%q session not found", name)
+ return nil, fmt.Errorf("%q session store not found", key)
  }
  store := s.(sessions.Store)
  return store.Get(c.Request(), name)

session/session_test.go

@@ -1,6 +1,7 @@
 package session
 
 import (
+ "fmt"
  "net/http"
  "net/http/httptest"
  "testing"
@@ -50,4 +51,15 @@ func TestMiddleware(t *testing.T) {
  h = mw(handler)
  assert.NoError(t, h(c))
  assert.Contains(t, rec.Header().Get(echo.HeaderSetCookie), "labstack.com")
+
+}
+
+func TestGetSessionMissingStore(t *testing.T) {
+ e := echo.New()
+ req := httptest.NewRequest(echo.GET, "/", nil)
+ rec := httptest.NewRecorder()
+ c := e.NewContext(req, rec)
+ _, err := Get("test", c)
+
+ assert.EqualError(t, err, fmt.Sprintf("%q session store not found", key))
 }