remove_test.go

Documentation: github.com/docker/cli/e2e/stack

     1  package stack
     2  
     3  import (
     4  	"strings"
     5  	"testing"
     6  
     7  	"github.com/docker/cli/internal/test/environment"
     8  	"gotest.tools/v3/golden"
     9  	"gotest.tools/v3/icmd"
    10  	"gotest.tools/v3/poll"
    11  )
    12  
    13  var pollSettings = environment.DefaultPollSettings
    14  
    15  func TestRemove(t *testing.T) {
    16  	stackname := "test-stack-remove"
    17  	deployFullStack(t, stackname)
    18  	defer cleanupFullStack(t, stackname)
    19  	result := icmd.RunCommand("docker", "stack", "rm", stackname)
    20  	result.Assert(t, icmd.Expected{Err: icmd.None})
    21  	golden.Assert(t, result.Stdout(), "stack-remove-success.golden")
    22  }
    23  
    24  func deployFullStack(t *testing.T, stackname string) {
    25  	t.Helper()
    26  	// TODO: this stack should have full options not minimal options
    27  	result := icmd.RunCommand("docker", "stack", "deploy",
    28  		"--compose-file=./testdata/full-stack.yml", stackname)
    29  	result.Assert(t, icmd.Success)
    30  
    31  	poll.WaitOn(t, taskCount(stackname, 2), pollSettings)
    32  }
    33  
    34  func cleanupFullStack(t *testing.T, stackname string) {
    35  	t.Helper()
    36  	// FIXME(vdemeester) we shouldn't have to do that. it is hiding a race on docker stack rm
    37  	poll.WaitOn(t, stackRm(stackname), pollSettings)
    38  	poll.WaitOn(t, taskCount(stackname, 0), pollSettings)
    39  }
    40  
    41  func stackRm(stackname string) func(t poll.LogT) poll.Result {
    42  	return func(poll.LogT) poll.Result {
    43  		result := icmd.RunCommand("docker", "stack", "rm", stackname)
    44  		if result.Error != nil {
    45  			if strings.Contains(result.Stderr(), "not found") {
    46  				return poll.Success()
    47  			}
    48  			return poll.Continue("docker stack rm %s failed : %v", stackname, result.Error)
    49  		}
    50  		return poll.Success()
    51  	}
    52  }
    53  
    54  func taskCount(stackname string, expected int) func(t poll.LogT) poll.Result {
    55  	return func(poll.LogT) poll.Result {
    56  		result := icmd.RunCommand("docker", "stack", "ps", stackname, "-f=desired-state=running")
    57  		count := lines(result.Stdout()) - 1
    58  		if count == expected {
    59  			return poll.Success()
    60  		}
    61  		return poll.Continue("task count is %d waiting for %d", count, expected)
    62  	}
    63  }
    64  
    65  func lines(out string) int {
    66  	return len(strings.Split(strings.TrimSpace(out), "\n"))
    67  }
    68
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