more doc and fix env issue

README.md

@@ -30,3 +30,8 @@ Step by step:
 7) Navigate to `http://demo.dev.canhearyou.com:3000/` and boom! Welcome to your new local WeCanHearYou development copy!
 
 Change some code, fix some bugs, implement some features and send us your Pull Request!
+
+# How to run the tests
+
+1) run `docker-compose up -d pgtest` to start a test-only PostgreSQL database on Docker.
+2) run `make test`.

app/pkg/env/env.go

@@ -38,8 +38,6 @@ func CurrentDomain() string {
 		return "test.canhearyou.com"
 	case "development":
 		return "dev.canhearyou.com"
-	case "staging":
-		return "staging.canhearyou.com"
 	}
 	return "canhearyou.com"
 
@@ -51,8 +49,6 @@ func Current() string {
 	switch env {
 	case "test":
 		return "test"
-	case "staging":
-		return "staging"
 	case "production":
 		return "production"
 	}
@@ -64,11 +60,6 @@ func IsProduction() bool {
 	return Current() == "production"
 }
 
-// IsStaging returns true on Wechy staging environment
-func IsStaging() bool {
-	return Current() == "staging"
-}
-
 // IsTest returns true on Wechy test environment
 func IsTest() bool {
 	return Current() == "test"

app/pkg/env/env_test.go

@@ -15,10 +15,9 @@ var envs = []struct {
 	isEnv  func() bool
 }{
 	{"test", "test.canhearyou.com", "test", env.IsTest},
-	{"staging", "staging.canhearyou.com", "staging", env.IsStaging},
 	{"development", "dev.canhearyou.com", "development", env.IsDevelopment},
 	{"production", "canhearyou.com", "production", env.IsProduction},
-	{"anything", "canhearyou.com", "development", env.IsDevelopment},
+	{"anything", "dev.canhearyou.com", "development", env.IsDevelopment},
 }
 
 func TestGetEnvOrDefault(t *testing.T) {