builder/amazon: tests

builder/amazon/common/block_device_test.go

@@ -7,8 +7,12 @@ import (
 )
 
 func TestBlockDevice(t *testing.T) {
-	ec2Mapping := []ec2.BlockDeviceMapping{
+	cases := []struct {
-		ec2.BlockDeviceMapping{
+		Config *BlockDevice
+		Result *ec2.BlockDeviceMapping
+	}{
+		{
+			Config: &BlockDevice{
 				DeviceName:          "/dev/sdb",
 				VirtualName:         "ephemeral0",
 				SnapshotId:          "snap-1234",
@@ -17,9 +21,8 @@ func TestBlockDevice(t *testing.T) {
 				DeleteOnTermination: true,
 				IOPS:                1000,
 			},
-	}
 
-	blockDevice := BlockDevice{
+			Result: &ec2.BlockDeviceMapping{
 				DeviceName:          "/dev/sdb",
 				VirtualName:         "ephemeral0",
 				SnapshotId:          "snap-1234",
@@ -27,18 +30,24 @@ func TestBlockDevice(t *testing.T) {
 				VolumeSize:          8,
 				DeleteOnTermination: true,
 				IOPS:                1000,
+			},
+		},
 	}
 
+	for _, tc := range cases {
 		blockDevices := BlockDevices{
-		AMIMappings:    []BlockDevice{blockDevice},
+			AMIMappings:    []BlockDevice{*tc.Config},
-		LaunchMappings: []BlockDevice{blockDevice},
+			LaunchMappings: []BlockDevice{*tc.Config},
 		}
 
-	if !reflect.DeepEqual(ec2Mapping, blockDevices.BuildAMIDevices()) {
+		expected := []ec2.BlockDeviceMapping{*tc.Result}
-		t.Fatalf("bad: %#v", ec2Mapping)
+
+		if !reflect.DeepEqual(expected, blockDevices.BuildAMIDevices()) {
+			t.Fatalf("bad: %#v", expected)
 		}
 
-	if !reflect.DeepEqual(ec2Mapping, blockDevices.BuildLaunchDevices()) {
+		if !reflect.DeepEqual(expected, blockDevices.BuildLaunchDevices()) {
-		t.Fatalf("bad: %#v", ec2Mapping)
+			t.Fatalf("bad: %#v", expected)
+		}
 	}
 }