cmd/micro/pluginmanager_test.go

   1 package main
   2
   3 import (
   4         "testing"
   5
   6         "github.com/blang/semver"
   7
   8         "github.com/flynn/json5"
   9 )
  10
  11 func TestDependencyResolving(t *testing.T) {
  12         js := `
  13 [{
  14   "Name": "Foo",
  15   "Versions": [{ "Version": "1.0.0" }, { "Version": "1.5.0" },{ "Version": "2.0.0" }]
  16 }, {
  17   "Name": "Bar",
  18   "Versions": [{ "Version": "1.0.0", "Require": {"Foo": ">1.0.0 <2.0.0"} }]
  19 }, {
  20   "Name": "Unresolvable",
  21   "Versions": [{ "Version": "1.0.0", "Require": {"Foo": "<=1.0.0", "Bar": ">0.0.0"} }]
  22         }]
  23 `
  24         var all PluginPackages
  25         err := json5.Unmarshal([]byte(js), &all)
  26         if err != nil {
  27                 t.Error(err)
  28         }
  29         selected, err := all.Resolve(PluginVersions{}, PluginDependencies{
  30                 &PluginDependency{"Bar", semver.MustParseRange(">=1.0.0")},
  31         })
  32
  33         check := func(name, version string) {
  34                 v := selected.find(name)
  35                 expected := semver.MustParse(version)
  36                 if v == nil {
  37                         t.Errorf("Failed to resolve %s", name)
  38                 } else if expected.NE(v.Version) {
  39                         t.Errorf("%s resolved in wrong version got %s", name, v)
  40                 }
  41         }
  42
  43         if err != nil {
  44                 t.Error(err)
  45         } else {
  46                 check("Foo", "1.5.0")
  47                 check("Bar", "1.0.0")
  48         }
  49
  50         selected, err = all.Resolve(PluginVersions{}, PluginDependencies{
  51                 &PluginDependency{"Unresolvable", semver.MustParseRange(">0.0.0")},
  52         })
  53         if err == nil {
  54                 t.Error("Unresolvable package resolved:", selected)
  55         }
  56 }