cmd/micro/pluginmanager_test.go

   1 package main
   2
   3 import (
   4         "encoding/json"
   5         "github.com/blang/semver"
   6         "testing"
   7 )
   8
   9 func TestDependencyResolving(t *testing.T) {
  10         js := `
  11 [{
  12   "Name": "Foo",
  13   "Versions": [{ "Version": "1.0.0" }, { "Version": "1.5.0" },{ "Version": "2.0.0" }]
  14 }, {
  15   "Name": "Bar",
  16   "Versions": [{ "Version": "1.0.0", "Require": {"Foo": ">1.0.0 <2.0.0"} }]
  17 }, {
  18   "Name": "Unresolvable",
  19   "Versions": [{ "Version": "1.0.0", "Require": {"Foo": "<=1.0.0", "Bar": ">0.0.0"} }]
  20         }]
  21 `
  22         var all PluginPackages
  23         err := json.Unmarshal([]byte(js), &all)
  24         if err != nil {
  25                 t.Error(err)
  26         }
  27         selected, err := all.Resolve(PluginVersions{}, PluginDependencies{
  28                 &PluginDependency{"Bar", semver.MustParseRange(">=1.0.0")},
  29         })
  30
  31         check := func(name, version string) {
  32                 v := selected.find(name)
  33                 expected := semver.MustParse(version)
  34                 if v == nil {
  35                         t.Errorf("Failed to resolve %s", name)
  36                 } else if expected.NE(v.Version) {
  37                         t.Errorf("%s resolved in wrong version got %s", name, v)
  38                 }
  39         }
  40
  41         if err != nil {
  42                 t.Error(err)
  43         } else {
  44                 check("Foo", "1.5.0")
  45                 check("Bar", "1.0.0")
  46         }
  47
  48         selected, err = all.Resolve(PluginVersions{}, PluginDependencies{
  49                 &PluginDependency{"Unresolvable", semver.MustParseRange(">0.0.0")},
  50         })
  51         if err == nil {
  52                 t.Error("Unresolvable package resolved:", selected)
  53         }
  54 }