From 9643d63c6ed68a94da78401fe7dc444376ce589a Mon Sep 17 00:00:00 2001
From: Alex Dadgar <alex.dadgar@gmail.com>
Date: Fri, 25 Mar 2016 10:16:04 -0700
Subject: [PATCH] add test for precedence

---
 client/driver/env/env_test.go | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/client/driver/env/env_test.go b/client/driver/env/env_test.go
index f2dcbccfa..de831d573 100644
--- a/client/driver/env/env_test.go
+++ b/client/driver/env/env_test.go
@@ -140,7 +140,8 @@ func TestEnvironment_AsList(t *testing.T) {
 	env := NewTaskEnvironment(n).
 		SetNetworks(networks).
 		SetPortMap(portMap).
-		SetMeta(map[string]string{"foo": "baz"}).Build()
+		SetTaskGroupMeta(map[string]string{"foo": "bar", "baz": "bam"}).
+		SetTaskMeta(map[string]string{"foo": "baz"}).Build()
 
 	act := env.EnvList()
 	exp := []string{
@@ -148,6 +149,7 @@ func TestEnvironment_AsList(t *testing.T) {
 		"NOMAD_ADDR_https=127.0.0.1:443",
 		"NOMAD_HOST_PORT_https=443",
 		"NOMAD_META_FOO=baz",
+		"NOMAD_META_BAZ=bam",
 	}
 	sort.Strings(act)
 	sort.Strings(exp)
@@ -225,3 +227,23 @@ func TestEnvironment_AppendHostEnvVars(t *testing.T) {
 		t.Fatalf("Didn't filter environment variable %q", skip)
 	}
 }
+
+func TestEnvironment_MetaPrecedence(t *testing.T) {
+	n := mock.Node()
+	env := NewTaskEnvironment(n).
+		SetJobMeta(map[string]string{"foo": "job", "bar": "job", "baz": "job"}).
+		SetTaskGroupMeta(map[string]string{"foo": "tg", "bar": "tg"}).
+		SetTaskMeta(map[string]string{"foo": "task"}).Build()
+
+	act := env.EnvList()
+	exp := []string{
+		"NOMAD_META_FOO=task",
+		"NOMAD_META_BAR=tg",
+		"NOMAD_META_BAZ=job",
+	}
+	sort.Strings(act)
+	sort.Strings(exp)
+	if !reflect.DeepEqual(act, exp) {
+		t.Fatalf("env.List() returned %v; want %v", act, exp)
+	}
+}