github.com/spirius/terraform@v0.10.0-beta2.0.20170714185654-87b2c0cf8fea/command/plugins_test.go (about)

     1  package command
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  	"path/filepath"
     8  	"reflect"
     9  	"testing"
    10  
    11  	"github.com/hashicorp/terraform/plugin/discovery"
    12  )
    13  
    14  func TestPluginPath(t *testing.T) {
    15  	td, err := ioutil.TempDir("", "tf")
    16  	defer os.RemoveAll(td)
    17  	defer testChdir(t, td)()
    18  
    19  	pluginPath := []string{"a", "b", "c"}
    20  
    21  	m := Meta{}
    22  	if err := m.storePluginPath(pluginPath); err != nil {
    23  		t.Fatal(err)
    24  	}
    25  
    26  	restoredPath, err := m.loadPluginPath()
    27  	if err != nil {
    28  		t.Fatal(err)
    29  	}
    30  
    31  	if !reflect.DeepEqual(pluginPath, restoredPath) {
    32  		t.Fatalf("expected plugin path %#v, got %#v", pluginPath, restoredPath)
    33  	}
    34  }
    35  
    36  // mockProviderInstaller is a discovery.PluginInstaller implementation that
    37  // is a mock for discovery.ProviderInstaller.
    38  type mockProviderInstaller struct {
    39  	// A map of provider names to available versions.
    40  	// The tests expect the versions to be in order from newest to oldest.
    41  	Providers map[string][]string
    42  
    43  	Dir               string
    44  	PurgeUnusedCalled bool
    45  }
    46  
    47  func (i *mockProviderInstaller) FileName(provider, version string) string {
    48  	return fmt.Sprintf("terraform-provider-%s_v%s_x4", provider, version)
    49  }
    50  
    51  func (i *mockProviderInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
    52  	noMeta := discovery.PluginMeta{}
    53  	versions := i.Providers[provider]
    54  	if len(versions) == 0 {
    55  		return noMeta, fmt.Errorf("provider %q not found", provider)
    56  	}
    57  
    58  	err := os.MkdirAll(i.Dir, 0755)
    59  	if err != nil {
    60  		return noMeta, fmt.Errorf("error creating plugins directory: %s", err)
    61  	}
    62  
    63  	for _, v := range versions {
    64  		version, err := discovery.VersionStr(v).Parse()
    65  		if err != nil {
    66  			panic(err)
    67  		}
    68  
    69  		if req.Allows(version) {
    70  			// provider filename
    71  			name := i.FileName(provider, v)
    72  			path := filepath.Join(i.Dir, name)
    73  			f, err := os.Create(path)
    74  			if err != nil {
    75  				return noMeta, fmt.Errorf("error fetching provider: %s", err)
    76  			}
    77  			f.Close()
    78  			return discovery.PluginMeta{
    79  				Name:    provider,
    80  				Version: discovery.VersionStr(v),
    81  				Path:    path,
    82  			}, nil
    83  		}
    84  	}
    85  
    86  	return noMeta, fmt.Errorf("no suitable version for provider %q found with constraints %s", provider, req)
    87  }
    88  
    89  func (i *mockProviderInstaller) PurgeUnused(map[string]discovery.PluginMeta) (discovery.PluginMetaSet, error) {
    90  	i.PurgeUnusedCalled = true
    91  	ret := make(discovery.PluginMetaSet)
    92  	ret.Add(discovery.PluginMeta{
    93  		Name:    "test",
    94  		Version: "0.0.0",
    95  		Path:    "mock-test",
    96  	})
    97  	return ret, nil
    98  }
    99  
   100  type callbackPluginInstaller func(provider string, req discovery.Constraints) (discovery.PluginMeta, error)
   101  
   102  func (cb callbackPluginInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
   103  	return cb(provider, req)
   104  }
   105  
   106  func (cb callbackPluginInstaller) PurgeUnused(map[string]discovery.PluginMeta) (discovery.PluginMetaSet, error) {
   107  	// does nothing
   108  	return make(discovery.PluginMetaSet), nil
   109  }