github.com/docker/libcompose@v0.4.1-0.20210616120443-2a046c0bdbf2/integration/scale_test.go (about)

     1  package integration
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  
     7  	. "gopkg.in/check.v1"
     8  )
     9  
    10  func (s *CliSuite) TestScale(c *C) {
    11  	p := s.ProjectFromText(c, "up", SimpleTemplate)
    12  
    13  	name := fmt.Sprintf("%s_%s_1", p, "hello")
    14  	name2 := fmt.Sprintf("%s_%s_2", p, "hello")
    15  	cn := s.GetContainerByName(c, name)
    16  	c.Assert(cn, NotNil)
    17  
    18  	c.Assert(cn.State.Running, Equals, true)
    19  
    20  	containers := s.GetContainersByProject(c, p)
    21  	c.Assert(1, Equals, len(containers))
    22  
    23  	s.FromText(c, p, "scale", "hello=2", SimpleTemplate)
    24  
    25  	containers = s.GetContainersByProject(c, p)
    26  	c.Assert(2, Equals, len(containers))
    27  
    28  	for _, name := range []string{name, name2} {
    29  		cn := s.GetContainerByName(c, name)
    30  		c.Assert(cn, NotNil)
    31  		c.Assert(cn.State.Running, Equals, true)
    32  	}
    33  
    34  	s.FromText(c, p, "scale", "--timeout", "0", "hello=1", SimpleTemplate)
    35  	containers = s.GetContainersByProject(c, p)
    36  	c.Assert(1, Equals, len(containers))
    37  
    38  	cn = s.GetContainerByName(c, name)
    39  	c.Assert(cn, IsNil)
    40  
    41  	cn = s.GetContainerByName(c, name2)
    42  	c.Assert(cn, NotNil)
    43  	c.Assert(cn.State.Running, Equals, true)
    44  }
    45  
    46  func (s *CliSuite) TestScaleWithHostPortWarning(c *C) {
    47  	template := `
    48  	test:
    49  	  image: busybox
    50  	  ports:
    51  	  - 8001:8001
    52  	`
    53  	p := s.ProjectFromText(c, "up", template)
    54  
    55  	name := fmt.Sprintf("%s_%s_1", p, "test")
    56  	cn := s.GetContainerByName(c, name)
    57  	c.Assert(cn, NotNil)
    58  
    59  	c.Assert(cn.State.Running, Equals, true)
    60  
    61  	containers := s.GetContainersByProject(c, p)
    62  	c.Assert(1, Equals, len(containers))
    63  
    64  	_, output := s.FromTextCaptureOutput(c, p, "scale", "test=2", template)
    65  
    66  	// Assert warning is given when trying to scale a service that specifies a host port
    67  	c.Assert(strings.Contains(output, "If multiple containers for this service are created on a single host, the port will clash."), Equals, true, Commentf(output))
    68  }