backend/remote-state/cos: Don't use github.com/likexian/gokit

We don't use this library anywhere else in Terraform, and this backend was
using it only for trivial helpers that are easy to express inline anyway.
The new direct code is also type-checkable, whereas these helper functions
seem to be written using reflection.

This gives us one fewer dependency to worry about and makes the test code
for this backend follow a similar assertions style as the rest of this
codebase.

go.mod

@@ -51,7 +51,6 @@ require (
 	github.com/joyent/triton-go v0.0.0-20180313100802-d8f9c0314926
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0
 	github.com/lib/pq v1.10.3
-	github.com/likexian/gokit v0.20.15
 	github.com/lusis/go-artifactory v0.0.0-20160115162124-7e4ce345df82
 	github.com/masterzen/winrm v0.0.0-20200615185753-c42b5136ff88
 	github.com/mattn/go-isatty v0.0.12

go.sum

@@ -460,14 +460,6 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/lib/pq v1.10.3 h1:v9QZf2Sn6AmjXtQeFpdoq/eaNtYP6IN+7lcrygsIAtg=
 github.com/lib/pq v1.10.3/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
-github.com/likexian/gokit v0.0.0-20190309162924-0a377eecf7aa/go.mod h1:QdfYv6y6qPA9pbBA2qXtoT8BMKha6UyNbxWGWl/9Jfk=
-github.com/likexian/gokit v0.0.0-20190418170008-ace88ad0983b/go.mod h1:KKqSnk/VVSW8kEyO2vVCXoanzEutKdlBAPohmGXkxCk=
-github.com/likexian/gokit v0.0.0-20190501133040-e77ea8b19cdc/go.mod h1:3kvONayqCaj+UgrRZGpgfXzHdMYCAO0KAt4/8n0L57Y=
-github.com/likexian/gokit v0.20.15 h1:DgtIqqTRFqtbiLJFzuRESwVrxWxfs8OlY6hnPYBa3BM=
-github.com/likexian/gokit v0.20.15/go.mod h1:kn+nTv3tqh6yhor9BC4Lfiu58SmH8NmQ2PmEl+uM6nU=
-github.com/likexian/simplejson-go v0.0.0-20190409170913-40473a74d76d/go.mod h1:Typ1BfnATYtZ/+/shXfFYLrovhFyuKvzwrdOnIDHlmg=
-github.com/likexian/simplejson-go v0.0.0-20190419151922-c1f9f0b4f084/go.mod h1:U4O1vIJvIKwbMZKUJ62lppfdvkCdVd2nfMimHK81eec=
-github.com/likexian/simplejson-go v0.0.0-20190502021454-d8787b4bfa0b/go.mod h1:3BWwtmKP9cXWwYCr5bkoVDEfLywacOv0s06OBEDpyt8=
 github.com/lusis/go-artifactory v0.0.0-20160115162124-7e4ce345df82 h1:wnfcqULT+N2seWf6y4yHzmi7GD2kNx4Ute0qArktD48=
 github.com/lusis/go-artifactory v0.0.0-20160115162124-7e4ce345df82/go.mod h1:y54tfGmO3NKssKveTEFFzH8C/akrSOy/iW9qEAUDV84=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=

internal/backend/remote-state/cos/backend_state.go

@@ -11,7 +11,6 @@ import (
 	"github.com/hashicorp/terraform/internal/states"
 	"github.com/hashicorp/terraform/internal/states/remote"
 	"github.com/hashicorp/terraform/internal/states/statemgr"
-	"github.com/likexian/gokit/assert"
 )
 
 // Define file suffix
@@ -88,7 +87,15 @@ func (b *Backend) StateMgr(name string) (statemgr.Full, error) {
 		return nil, err
 	}
 
-	if !assert.IsContains(ws, name) {
+	exists := false
+	for _, candidate := range ws {
+		if candidate == name {
+			exists = true
+			break
+		}
+	}
+
+	if !exists {
 		log.Printf("[DEBUG] workspace %v not exists", name)
 
 		// take a lock on this state while we write it

internal/backend/remote-state/cos/backend_test.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/hashicorp/terraform/internal/backend"
 	"github.com/hashicorp/terraform/internal/states/remote"
-	"github.com/likexian/gokit/assert"
 )
 
 const (
@@ -38,12 +37,18 @@ func TestStateFile(t *testing.T) {
 	}
 
 	for _, c := range cases {
-		b := &Backend{
-			prefix: c.prefix,
-			key:    c.key,
-		}
-		assert.Equal(t, b.stateFile(c.stateName), c.wantStateFile)
-		assert.Equal(t, b.lockFile(c.stateName), c.wantLockFile)
+		t.Run(fmt.Sprintf("%s %s %s", c.prefix, c.key, c.stateName), func(t *testing.T) {
+			b := &Backend{
+				prefix: c.prefix,
+				key:    c.key,
+			}
+			if got, want := b.stateFile(c.stateName), c.wantStateFile; got != want {
+				t.Errorf("wrong state file name\ngot:  %s\nwant: %s", got, want)
+			}
+			if got, want := b.lockFile(c.stateName), c.wantLockFile; got != want {
+				t.Errorf("wrong lock file name\ngot:  %s\nwant: %s", got, want)
+			}
+		})
 	}
 }
 
@@ -56,10 +61,14 @@ func TestRemoteClient(t *testing.T) {
 	defer teardownBackend(t, be)
 
 	ss, err := be.StateMgr(backend.DefaultStateName)
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	rs, ok := ss.(*remote.State)
-	assert.True(t, ok)
+	if !ok {
+		t.Fatalf("wrong state manager type\ngot:  %T\nwant: %T", ss, rs)
+	}
 
 	remote.TestClient(t, rs.Client)
 }
@@ -74,10 +83,14 @@ func TestRemoteClientWithPrefix(t *testing.T) {
 	defer teardownBackend(t, be)
 
 	ss, err := be.StateMgr(backend.DefaultStateName)
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	rs, ok := ss.(*remote.State)
-	assert.True(t, ok)
+	if !ok {
+		t.Fatalf("wrong state manager type\ngot:  %T\nwant: %T", ss, rs)
+	}
 
 	remote.TestClient(t, rs.Client)
 }
@@ -91,10 +104,14 @@ func TestRemoteClientWithEncryption(t *testing.T) {
 	defer teardownBackend(t, be)
 
 	ss, err := be.StateMgr(backend.DefaultStateName)
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	rs, ok := ss.(*remote.State)
-	assert.True(t, ok)
+	if !ok {
+		t.Fatalf("wrong state manager type\ngot:  %T\nwant: %T", ss, rs)
+	}
 
 	remote.TestClient(t, rs.Client)
 }
@@ -122,10 +139,14 @@ func TestRemoteLocks(t *testing.T) {
 	}
 
 	c0, err := remoteClient()
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	c1, err := remoteClient()
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	remote.TestRemoteLocks(t, c0, c1)
 }
@@ -203,10 +224,14 @@ func setupBackend(t *testing.T, bucket, prefix, key string, encrypt bool) backen
 	be := b.(*Backend)
 
 	c, err := be.client("tencentcloud")
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	err = c.putBucket()
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	return b
 }
@@ -215,10 +240,14 @@ func teardownBackend(t *testing.T, b backend.Backend) {
 	t.Helper()
 
 	c, err := b.(*Backend).client("tencentcloud")
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 
 	err = c.deleteBucket(true)
-	assert.Nil(t, err)
+	if err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
 }
 
 func bucketName(t *testing.T) string {