Adding ResourceRequirementSpec to v1beta1, v1beta2, and v1beta3 APIs. The old resource

quantities 'CPU' and 'Memory' will be preserved until support for v1beta1 and v1beta2 APIs are
dropped.
Improved resource validation in the process.

pkg/api/resource_helpers_test.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package api
+
+import (
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api/resource"
+)
+
+func TestResourceHelpers(t *testing.T) {
+	cpuLimit := resource.MustParse("10")
+	memoryLimit := resource.MustParse("10G")
+	resourceSpec := ResourceRequirementSpec{
+		Limits: ResourceList{
+			"cpu":             cpuLimit,
+			"memory":          memoryLimit,
+			"kube.io/storage": memoryLimit,
+		},
+	}
+	if res := resourceSpec.Limits.Cpu(); *res != cpuLimit {
+		t.Errorf("expected cpulimit %d, got %d", cpuLimit, res)
+	}
+	if res := resourceSpec.Limits.Memory(); *res != memoryLimit {
+		t.Errorf("expected memorylimit %d, got %d", memoryLimit, res)
+	}
+	resourceSpec = ResourceRequirementSpec{
+		Limits: ResourceList{
+			"memory":          memoryLimit,
+			"kube.io/storage": memoryLimit,
+		},
+	}
+	if res := resourceSpec.Limits.Cpu(); res.Value() != 0 {
+		t.Errorf("expected cpulimit %d, got %d", 0, res)
+	}
+	if res := resourceSpec.Limits.Memory(); *res != memoryLimit {
+		t.Errorf("expected memorylimit %d, got %d", memoryLimit, res)
+	}
+}