helpers_test.go 12 KB

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  1. /*
  2. Copyright 2015 The Kubernetes Authors.
  3. Licensed under the Apache License, Version 2.0 (the "License");
  4. you may not use this file except in compliance with the License.
  5. You may obtain a copy of the License at
  6. http://www.apache.org/licenses/LICENSE-2.0
  7. Unless required by applicable law or agreed to in writing, software
  8. distributed under the License is distributed on an "AS IS" BASIS,
  9. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. See the License for the specific language governing permissions and
  11. limitations under the License.
  12. */
  13. package resource
  14. import (
  15. "testing"
  16. "github.com/stretchr/testify/assert"
  17. "k8s.io/api/core/v1"
  18. "k8s.io/apimachinery/pkg/api/equality"
  19. "k8s.io/apimachinery/pkg/api/resource"
  20. utilfeature "k8s.io/apiserver/pkg/util/feature"
  21. featuregatetesting "k8s.io/component-base/featuregate/testing"
  22. "k8s.io/kubernetes/pkg/features"
  23. )
  24. func TestResourceHelpers(t *testing.T) {
  25. cpuLimit := resource.MustParse("10")
  26. memoryLimit := resource.MustParse("10G")
  27. resourceSpec := v1.ResourceRequirements{
  28. Limits: v1.ResourceList{
  29. v1.ResourceCPU: cpuLimit,
  30. v1.ResourceMemory: memoryLimit,
  31. },
  32. }
  33. if res := resourceSpec.Limits.Cpu(); res.Cmp(cpuLimit) != 0 {
  34. t.Errorf("expected cpulimit %v, got %v", cpuLimit, res)
  35. }
  36. if res := resourceSpec.Limits.Memory(); res.Cmp(memoryLimit) != 0 {
  37. t.Errorf("expected memorylimit %v, got %v", memoryLimit, res)
  38. }
  39. resourceSpec = v1.ResourceRequirements{
  40. Limits: v1.ResourceList{
  41. v1.ResourceMemory: memoryLimit,
  42. },
  43. }
  44. if res := resourceSpec.Limits.Cpu(); res.Value() != 0 {
  45. t.Errorf("expected cpulimit %v, got %v", 0, res)
  46. }
  47. if res := resourceSpec.Limits.Memory(); res.Cmp(memoryLimit) != 0 {
  48. t.Errorf("expected memorylimit %v, got %v", memoryLimit, res)
  49. }
  50. }
  51. func TestDefaultResourceHelpers(t *testing.T) {
  52. resourceList := v1.ResourceList{}
  53. if resourceList.Cpu().Format != resource.DecimalSI {
  54. t.Errorf("expected %v, actual %v", resource.DecimalSI, resourceList.Cpu().Format)
  55. }
  56. if resourceList.Memory().Format != resource.BinarySI {
  57. t.Errorf("expected %v, actual %v", resource.BinarySI, resourceList.Memory().Format)
  58. }
  59. }
  60. func TestGetResourceRequest(t *testing.T) {
  61. defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.PodOverhead, true)()
  62. cases := []struct {
  63. pod *v1.Pod
  64. cName string
  65. resourceName v1.ResourceName
  66. expectedValue int64
  67. }{
  68. {
  69. pod: getPod("foo", podResources{cpuRequest: "9"}),
  70. resourceName: v1.ResourceCPU,
  71. expectedValue: 9000,
  72. },
  73. {
  74. pod: getPod("foo", podResources{memoryRequest: "90Mi"}),
  75. resourceName: v1.ResourceMemory,
  76. expectedValue: 94371840,
  77. },
  78. {
  79. cName: "just-overhead for cpu",
  80. pod: getPod("foo", podResources{cpuOverhead: "5", memoryOverhead: "5"}),
  81. resourceName: v1.ResourceCPU,
  82. expectedValue: 0,
  83. },
  84. {
  85. cName: "just-overhead for memory",
  86. pod: getPod("foo", podResources{memoryOverhead: "5"}),
  87. resourceName: v1.ResourceMemory,
  88. expectedValue: 0,
  89. },
  90. {
  91. cName: "cpu overhead and req",
  92. pod: getPod("foo", podResources{cpuRequest: "2", cpuOverhead: "5", memoryOverhead: "5"}),
  93. resourceName: v1.ResourceCPU,
  94. expectedValue: 7000,
  95. },
  96. {
  97. cName: "mem overhead and req",
  98. pod: getPod("foo", podResources{cpuRequest: "2", memoryRequest: "1024", cpuOverhead: "5", memoryOverhead: "5"}),
  99. resourceName: v1.ResourceMemory,
  100. expectedValue: 1029,
  101. },
  102. }
  103. as := assert.New(t)
  104. for idx, tc := range cases {
  105. actual := GetResourceRequest(tc.pod, tc.resourceName)
  106. as.Equal(actual, tc.expectedValue, "expected test case [%d] %v: to return %q; got %q instead", idx, tc.cName, tc.expectedValue, actual)
  107. }
  108. }
  109. func TestExtractResourceValue(t *testing.T) {
  110. cases := []struct {
  111. fs *v1.ResourceFieldSelector
  112. pod *v1.Pod
  113. cName string
  114. expectedValue string
  115. expectedError error
  116. }{
  117. {
  118. fs: &v1.ResourceFieldSelector{
  119. Resource: "limits.cpu",
  120. },
  121. cName: "foo",
  122. pod: getPod("foo", podResources{cpuLimit: "9"}),
  123. expectedValue: "9",
  124. },
  125. {
  126. fs: &v1.ResourceFieldSelector{
  127. Resource: "requests.cpu",
  128. },
  129. cName: "foo",
  130. pod: getPod("foo", podResources{}),
  131. expectedValue: "0",
  132. },
  133. {
  134. fs: &v1.ResourceFieldSelector{
  135. Resource: "requests.cpu",
  136. },
  137. cName: "foo",
  138. pod: getPod("foo", podResources{cpuRequest: "8"}),
  139. expectedValue: "8",
  140. },
  141. {
  142. fs: &v1.ResourceFieldSelector{
  143. Resource: "requests.cpu",
  144. },
  145. cName: "foo",
  146. pod: getPod("foo", podResources{cpuRequest: "100m"}),
  147. expectedValue: "1",
  148. },
  149. {
  150. fs: &v1.ResourceFieldSelector{
  151. Resource: "requests.cpu",
  152. Divisor: resource.MustParse("100m"),
  153. },
  154. cName: "foo",
  155. pod: getPod("foo", podResources{cpuRequest: "1200m"}),
  156. expectedValue: "12",
  157. },
  158. {
  159. fs: &v1.ResourceFieldSelector{
  160. Resource: "requests.memory",
  161. },
  162. cName: "foo",
  163. pod: getPod("foo", podResources{memoryRequest: "100Mi"}),
  164. expectedValue: "104857600",
  165. },
  166. {
  167. fs: &v1.ResourceFieldSelector{
  168. Resource: "requests.memory",
  169. Divisor: resource.MustParse("1Mi"),
  170. },
  171. cName: "foo",
  172. pod: getPod("foo", podResources{memoryRequest: "100Mi", memoryLimit: "1Gi"}),
  173. expectedValue: "100",
  174. },
  175. {
  176. fs: &v1.ResourceFieldSelector{
  177. Resource: "limits.memory",
  178. },
  179. cName: "foo",
  180. pod: getPod("foo", podResources{memoryRequest: "10Mi", memoryLimit: "100Mi"}),
  181. expectedValue: "104857600",
  182. },
  183. {
  184. fs: &v1.ResourceFieldSelector{
  185. Resource: "limits.cpu",
  186. },
  187. cName: "init-foo",
  188. pod: getPod("foo", podResources{cpuLimit: "9"}),
  189. expectedValue: "9",
  190. },
  191. {
  192. fs: &v1.ResourceFieldSelector{
  193. Resource: "requests.cpu",
  194. },
  195. cName: "init-foo",
  196. pod: getPod("foo", podResources{}),
  197. expectedValue: "0",
  198. },
  199. {
  200. fs: &v1.ResourceFieldSelector{
  201. Resource: "requests.cpu",
  202. },
  203. cName: "init-foo",
  204. pod: getPod("foo", podResources{cpuRequest: "8"}),
  205. expectedValue: "8",
  206. },
  207. {
  208. fs: &v1.ResourceFieldSelector{
  209. Resource: "requests.cpu",
  210. },
  211. cName: "init-foo",
  212. pod: getPod("foo", podResources{cpuRequest: "100m"}),
  213. expectedValue: "1",
  214. },
  215. {
  216. fs: &v1.ResourceFieldSelector{
  217. Resource: "requests.cpu",
  218. Divisor: resource.MustParse("100m"),
  219. },
  220. cName: "init-foo",
  221. pod: getPod("foo", podResources{cpuRequest: "1200m"}),
  222. expectedValue: "12",
  223. },
  224. {
  225. fs: &v1.ResourceFieldSelector{
  226. Resource: "requests.memory",
  227. },
  228. cName: "init-foo",
  229. pod: getPod("foo", podResources{memoryRequest: "100Mi"}),
  230. expectedValue: "104857600",
  231. },
  232. {
  233. fs: &v1.ResourceFieldSelector{
  234. Resource: "requests.memory",
  235. Divisor: resource.MustParse("1Mi"),
  236. },
  237. cName: "init-foo",
  238. pod: getPod("foo", podResources{memoryRequest: "100Mi", memoryLimit: "1Gi"}),
  239. expectedValue: "100",
  240. },
  241. {
  242. fs: &v1.ResourceFieldSelector{
  243. Resource: "limits.memory",
  244. },
  245. cName: "init-foo",
  246. pod: getPod("foo", podResources{memoryRequest: "10Mi", memoryLimit: "100Mi"}),
  247. expectedValue: "104857600",
  248. },
  249. }
  250. as := assert.New(t)
  251. for idx, tc := range cases {
  252. actual, err := ExtractResourceValueByContainerName(tc.fs, tc.pod, tc.cName)
  253. if tc.expectedError != nil {
  254. as.Equal(tc.expectedError, err, "expected test case [%d] to fail with error %v; got %v", idx, tc.expectedError, err)
  255. } else {
  256. as.Nil(err, "expected test case [%d] to not return an error; got %v", idx, err)
  257. as.Equal(tc.expectedValue, actual, "expected test case [%d] to return %q; got %q instead", idx, tc.expectedValue, actual)
  258. }
  259. }
  260. }
  261. func TestPodRequestsAndLimits(t *testing.T) {
  262. defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.PodOverhead, true)()
  263. cases := []struct {
  264. pod *v1.Pod
  265. cName string
  266. expectedRequests v1.ResourceList
  267. expectedLimits v1.ResourceList
  268. }{
  269. {
  270. cName: "just-limit-no-overhead",
  271. pod: getPod("foo", podResources{cpuLimit: "9"}),
  272. expectedRequests: v1.ResourceList{},
  273. expectedLimits: v1.ResourceList{
  274. v1.ResourceName(v1.ResourceCPU): resource.MustParse("9"),
  275. },
  276. },
  277. {
  278. cName: "just-overhead",
  279. pod: getPod("foo", podResources{cpuOverhead: "5", memoryOverhead: "5"}),
  280. expectedRequests: v1.ResourceList{
  281. v1.ResourceName(v1.ResourceCPU): resource.MustParse("5"),
  282. v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
  283. },
  284. expectedLimits: v1.ResourceList{},
  285. },
  286. {
  287. cName: "req-and-overhead",
  288. pod: getPod("foo", podResources{cpuRequest: "1", memoryRequest: "10", cpuOverhead: "5", memoryOverhead: "5"}),
  289. expectedRequests: v1.ResourceList{
  290. v1.ResourceName(v1.ResourceCPU): resource.MustParse("6"),
  291. v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
  292. },
  293. expectedLimits: v1.ResourceList{},
  294. },
  295. {
  296. cName: "all-req-lim-and-overhead",
  297. pod: getPod("foo", podResources{cpuRequest: "1", cpuLimit: "2", memoryRequest: "10", memoryLimit: "12", cpuOverhead: "5", memoryOverhead: "5"}),
  298. expectedRequests: v1.ResourceList{
  299. v1.ResourceName(v1.ResourceCPU): resource.MustParse("6"),
  300. v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
  301. },
  302. expectedLimits: v1.ResourceList{
  303. v1.ResourceName(v1.ResourceCPU): resource.MustParse("7"),
  304. v1.ResourceName(v1.ResourceMemory): resource.MustParse("17"),
  305. },
  306. },
  307. {
  308. cName: "req-some-lim-and-overhead",
  309. pod: getPod("foo", podResources{cpuRequest: "1", cpuLimit: "2", memoryRequest: "10", cpuOverhead: "5", memoryOverhead: "5"}),
  310. expectedRequests: v1.ResourceList{
  311. v1.ResourceName(v1.ResourceCPU): resource.MustParse("6"),
  312. v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
  313. },
  314. expectedLimits: v1.ResourceList{
  315. v1.ResourceName(v1.ResourceCPU): resource.MustParse("7"),
  316. },
  317. },
  318. }
  319. for idx, tc := range cases {
  320. resRequests, resLimits := PodRequestsAndLimits(tc.pod)
  321. if !equality.Semantic.DeepEqual(tc.expectedRequests, resRequests) {
  322. t.Errorf("test case failure[%d]: %v, requests:\n expected:\t%v\ngot\t\t%v", idx, tc.cName, tc.expectedRequests, resRequests)
  323. }
  324. if !equality.Semantic.DeepEqual(tc.expectedLimits, resLimits) {
  325. t.Errorf("test case failure[%d]: %v, limits:\n expected:\t%v\ngot\t\t%v", idx, tc.cName, tc.expectedLimits, resLimits)
  326. }
  327. }
  328. }
  329. type podResources struct {
  330. cpuRequest, cpuLimit, memoryRequest, memoryLimit, cpuOverhead, memoryOverhead string
  331. }
  332. func getPod(cname string, resources podResources) *v1.Pod {
  333. r := v1.ResourceRequirements{
  334. Limits: make(v1.ResourceList),
  335. Requests: make(v1.ResourceList),
  336. }
  337. overhead := make(v1.ResourceList)
  338. if resources.cpuLimit != "" {
  339. r.Limits[v1.ResourceCPU] = resource.MustParse(resources.cpuLimit)
  340. }
  341. if resources.memoryLimit != "" {
  342. r.Limits[v1.ResourceMemory] = resource.MustParse(resources.memoryLimit)
  343. }
  344. if resources.cpuRequest != "" {
  345. r.Requests[v1.ResourceCPU] = resource.MustParse(resources.cpuRequest)
  346. }
  347. if resources.memoryRequest != "" {
  348. r.Requests[v1.ResourceMemory] = resource.MustParse(resources.memoryRequest)
  349. }
  350. if resources.cpuOverhead != "" {
  351. overhead[v1.ResourceCPU] = resource.MustParse(resources.cpuOverhead)
  352. }
  353. if resources.memoryOverhead != "" {
  354. overhead[v1.ResourceMemory] = resource.MustParse(resources.memoryOverhead)
  355. }
  356. return &v1.Pod{
  357. Spec: v1.PodSpec{
  358. Containers: []v1.Container{
  359. {
  360. Name: cname,
  361. Resources: r,
  362. },
  363. },
  364. InitContainers: []v1.Container{
  365. {
  366. Name: "init-" + cname,
  367. Resources: r,
  368. },
  369. },
  370. Overhead: overhead,
  371. },
  372. }
  373. }