tokenserver: Validate and parse service_accounts.cfg rules.

tokenserver/appengine/impl/serviceaccounts/config_test.go

Index: tokenserver/appengine/impl/serviceaccounts/config_test.go
diff --git a/tokenserver/appengine/impl/serviceaccounts/config_test.go b/tokenserver/appengine/impl/serviceaccounts/config_test.go
index 22b1c698172cb300318d6861a1f4d8898cab11fc..1f823cb191f96cc0198ff7e7ca2e136a64767510 100644
--- a/tokenserver/appengine/impl/serviceaccounts/config_test.go
+++ b/tokenserver/appengine/impl/serviceaccounts/config_test.go
@@ -15,6 +15,7 @@
 package serviceaccounts
 
 import (
+	"sort"
 	"testing"
 
 	"github.com/golang/protobuf/proto"
@@ -34,15 +35,46 @@ func TestRules(t *testing.T) {
 				name: "rule 1"
 				owner: "developer@example.com"
 				service_account: "abc@robots.com"
-				allowed_scope: "https://scope"
+				service_account: "def@robots.com"
+				allowed_scope: "https://www.googleapis.com/scope1"
+				allowed_scope: "https://www.googleapis.com/scope2"
 				end_user: "user:abc@example.com"
-				end_user: "group:group-name"
+				end_user: "group:enduser-group"
 				proxy: "user:proxy@example.com"
-				max_grant_validity_duration: 3600
+				proxy: "group:proxy-group"
+			}
+			rules {
+				name: "rule 2"
+				service_account: "xyz@robots.com"
 			}
 		`)
 		So(err, ShouldBeNil)
 		So(cfg, ShouldNotBeNil)
+
+		rule := cfg.Rule("abc@robots.com")
+		So(rule, ShouldNotBeNil)
+		So(rule.Rule.Name, ShouldEqual, "rule 1")
+
+		scopes := rule.AllowedScopes.ToSlice()
+		sort.Strings(scopes)
+		So(scopes, ShouldResemble, []string{
+			"https://www.googleapis.com/scope1",
+			"https://www.googleapis.com/scope2",
+		})
+
+		So(rule.EndUsers.ToStrings(), ShouldResemble, []string{
+			"group:enduser-group",
+			"user:abc@example.com",
+		})
+		So(rule.Proxies.ToStrings(), ShouldResemble, []string{
+			"group:proxy-group",
+			"user:proxy@example.com",
+		})
+		So(rule.Rule.MaxGrantValidityDuration, ShouldEqual, 24*3600)
+
+		So(cfg.Rule("def@robots.com").Rule.Name, ShouldEqual, "rule 1")
+		So(cfg.Rule("xyz@robots.com").Rule.Name, ShouldEqual, "rule 2")
+		So(cfg.Rule("unknown@robots.com"), ShouldBeNil)
 	})
 }