lib/config/load_test.go

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 package config
   6
   7 import (
   8         "bytes"
   9         "io"
  10         "os"
  11         "os/exec"
  12         "testing"
  13
  14         "git.curoverse.com/arvados.git/sdk/go/ctxlog"
  15         "github.com/ghodss/yaml"
  16         check "gopkg.in/check.v1"
  17 )
  18
  19 // Gocheck boilerplate
  20 func Test(t *testing.T) {
  21         check.TestingT(t)
  22 }
  23
  24 var _ = check.Suite(&LoadSuite{})
  25
  26 type LoadSuite struct{}
  27
  28 func (s *LoadSuite) TestEmpty(c *check.C) {
  29         cfg, err := Load(&bytes.Buffer{}, ctxlog.TestLogger(c))
  30         c.Check(cfg, check.IsNil)
  31         c.Assert(err, check.ErrorMatches, `config does not define any clusters`)
  32 }
  33
  34 func (s *LoadSuite) TestNoConfigs(c *check.C) {
  35         cfg, err := Load(bytes.NewBufferString(`Clusters: {"z1111": {}}`), ctxlog.TestLogger(c))
  36         c.Assert(err, check.IsNil)
  37         c.Assert(cfg.Clusters, check.HasLen, 1)
  38         cc, err := cfg.GetCluster("z1111")
  39         c.Assert(err, check.IsNil)
  40         c.Check(cc.ClusterID, check.Equals, "z1111")
  41         c.Check(cc.API.MaxRequestAmplification, check.Equals, 4)
  42         c.Check(cc.API.MaxItemsPerResponse, check.Equals, 1000)
  43 }
  44
  45 func (s *LoadSuite) TestMultipleClusters(c *check.C) {
  46         cfg, err := Load(bytes.NewBufferString(`{"Clusters":{"z1111":{},"z2222":{}}}`), ctxlog.TestLogger(c))
  47         c.Assert(err, check.IsNil)
  48         c1, err := cfg.GetCluster("z1111")
  49         c.Assert(err, check.IsNil)
  50         c.Check(c1.ClusterID, check.Equals, "z1111")
  51         c2, err := cfg.GetCluster("z2222")
  52         c.Assert(err, check.IsNil)
  53         c.Check(c2.ClusterID, check.Equals, "z2222")
  54 }
  55
  56 func (s *LoadSuite) TestMovedKeys(c *check.C) {
  57         s.checkEquivalent(c, `# config has old keys only
  58 Clusters:
  59  zzzzz:
  60   RequestLimits:
  61    MultiClusterRequestConcurrency: 3
  62    MaxItemsPerResponse: 999
  63 `, `
  64 Clusters:
  65  zzzzz:
  66   API:
  67    MaxRequestAmplification: 3
  68    MaxItemsPerResponse: 999
  69 `)
  70         s.checkEquivalent(c, `# config has both old and new keys; old values win
  71 Clusters:
  72  zzzzz:
  73   RequestLimits:
  74    MultiClusterRequestConcurrency: 0
  75    MaxItemsPerResponse: 555
  76   API:
  77    MaxRequestAmplification: 3
  78    MaxItemsPerResponse: 999
  79 `, `
  80 Clusters:
  81  zzzzz:
  82   API:
  83    MaxRequestAmplification: 0
  84    MaxItemsPerResponse: 555
  85 `)
  86 }
  87
  88 func (s *LoadSuite) checkEquivalent(c *check.C, goty, expectedy string) {
  89         got, err := Load(bytes.NewBufferString(goty), ctxlog.TestLogger(c))
  90         c.Assert(err, check.IsNil)
  91         expected, err := Load(bytes.NewBufferString(expectedy), ctxlog.TestLogger(c))
  92         c.Assert(err, check.IsNil)
  93         if !c.Check(got, check.DeepEquals, expected) {
  94                 cmd := exec.Command("diff", "-u", "--label", "expected", "--label", "got", "/dev/fd/3", "/dev/fd/4")
  95                 for _, obj := range []interface{}{expected, got} {
  96                         y, _ := yaml.Marshal(obj)
  97                         pr, pw, err := os.Pipe()
  98                         c.Assert(err, check.IsNil)
  99                         defer pr.Close()
 100                         go func() {
 101                                 io.Copy(pw, bytes.NewBuffer(y))
 102                                 pw.Close()
 103                         }()
 104                         cmd.ExtraFiles = append(cmd.ExtraFiles, pr)
 105                 }
 106                 diff, err := cmd.CombinedOutput()
 107                 c.Log(string(diff))
 108                 c.Check(err, check.IsNil)
 109         }
 110 }