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add test fixtures (GoogleCloudPlatform#100)
* add test fixtures * PR feedback
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| // Copyright 2021 Google LLC | ||
| // | ||
| // 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. | ||
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| package imagetest | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/GoogleCloudPlatform/compute-image-tools/daisy" | ||
| ) | ||
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| const ( | ||
| createVMsStepName = "create-vms" | ||
| createDisksStepName = "create-disks" | ||
| successMatch = "FINISHED-TEST" | ||
| ) | ||
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| // TestVM is a test VM. | ||
| type TestVM struct { | ||
| name string | ||
| testWorkflow *TestWorkflow | ||
| instance *daisy.Instance | ||
| } | ||
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| // AddMetadata adds the specified key:value pair to metadata during VM creation. | ||
| func (t *TestVM) AddMetadata(key, value string) { | ||
| createVMStep := t.testWorkflow.wf.Steps[createVMsStepName] | ||
| for _, vm := range createVMStep.CreateInstances.Instances { | ||
| if vm.Name == t.name { | ||
| if vm.Metadata == nil { | ||
| vm.Metadata = make(map[string]string) | ||
| } | ||
| vm.Metadata[key] = value | ||
| return | ||
| } | ||
| } | ||
| } | ||
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| // RunTests runs only the named tests on the testVM. | ||
| // | ||
| // From go help test: | ||
| // -run regexp | ||
| // Run only those tests and examples matching the regular expression. | ||
| // For tests, the regular expression is split by unbracketed slash (/) | ||
| // characters into a sequence of regular expressions, and each part | ||
| // of a test's identifier must match the corresponding element in | ||
| // the sequence, if any. Note that possible parents of matches are | ||
| // run too, so that -run=X/Y matches and runs and reports the result | ||
| // of all tests matching X, even those without sub-tests matching Y, | ||
| // because it must run them to look for those sub-tests. | ||
| func (t *TestVM) RunTests(runtest string) { | ||
| t.AddMetadata("_test_run", runtest) | ||
| } | ||
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| // SetShutdownScript sets the `shutdown-script` metadata key for a VM. | ||
| func (t *TestVM) SetShutdownScript(script string) { | ||
| t.AddMetadata("shutdown-script", script) | ||
| } | ||
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| // SetStartupScript sets the `startup-script` metadata key for a VM. | ||
| func (t *TestVM) SetStartupScript(script string) { | ||
| t.AddMetadata("startup-script", script) | ||
| } | ||
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| // Reboot stops the VM, waits for it to shutdown, then starts it again. Your | ||
| // test package must handle being run twice. | ||
| func (t *TestVM) Reboot() error { | ||
| // Grab the wait step that was added with CreateTestVM. | ||
| waitStep, ok := t.testWorkflow.wf.Steps["wait-"+t.name] | ||
| if !ok { | ||
| return fmt.Errorf("wait-%s step missing", t.name) | ||
| } | ||
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| stopInstancesStep, err := t.testWorkflow.addStopStep(t.name, t.name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if err := t.testWorkflow.wf.AddDependency(stopInstancesStep, waitStep); err != nil { | ||
| return err | ||
| } | ||
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| waitStopStep, err := t.testWorkflow.addWaitStep("stopped-"+t.name, t.name, true) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if err := t.testWorkflow.wf.AddDependency(waitStopStep, stopInstancesStep); err != nil { | ||
| return err | ||
| } | ||
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| startInstancesStep, err := t.testWorkflow.addStartStep(t.name, t.name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if err := t.testWorkflow.wf.AddDependency(startInstancesStep, waitStopStep); err != nil { | ||
| return err | ||
| } | ||
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| waitStartedStep, err := t.testWorkflow.addWaitStep("started-"+t.name, t.name, false) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| if err := t.testWorkflow.wf.AddDependency(waitStartedStep, startInstancesStep); err != nil { | ||
| return err | ||
| } | ||
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| return nil | ||
| } |
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