x/tools: use internal/expect instead of go/expect

The only remaining uses of go/expect are from packagestest.

Updates golang/go#70229

Change-Id: I5a8c835b761381747fbd3f936d261ed773b536e3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/625919
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

README.md

@@ -51,9 +51,6 @@ Selected packages:
 
 - `go/cfg` provides a simple control-flow graph (CFG) for a Go function.
 
-- `go/expect` reads Go source files used as test inputs and interprets
-  special comments within them as queries or assertions for testing.
-
 - `go/gcexportdata` and `go/gccgoexportdata` read and write the binary
   files containing type information used by the standard and `gccgo` compilers.
 

go/ssa/builder_generic_test.go

@@ -13,9 +13,9 @@ import (
 	"sort"
 	"testing"
 
-	"golang.org/x/tools/go/expect"
 	"golang.org/x/tools/go/loader"
 	"golang.org/x/tools/go/ssa"
+	"golang.org/x/tools/internal/expect"
 )
 
 // TestGenericBodies tests that bodies of generic functions and methods containing
@@ -29,7 +29,7 @@ import (
 //
 // where a, b and c are the types of the arguments to the print call
 // serialized using go/types.Type.String().
-// See x/tools/go/expect for details on the syntax.
+// See x/tools/internal/expect for details on the syntax.
 func TestGenericBodies(t *testing.T) {
 	for _, content := range []string{
 		`

go/ssa/builder_test.go

@@ -25,10 +25,10 @@ import (
 
 	"golang.org/x/sync/errgroup"
 	"golang.org/x/tools/go/analysis/analysistest"
-	"golang.org/x/tools/go/expect"
 	"golang.org/x/tools/go/packages"
 	"golang.org/x/tools/go/ssa"
 	"golang.org/x/tools/go/ssa/ssautil"
+	"golang.org/x/tools/internal/expect"
 	"golang.org/x/tools/internal/testenv"
 )
 

go/ssa/source_test.go

@@ -18,8 +18,8 @@ import (
 	"testing"
 
 	"golang.org/x/tools/go/ast/astutil"
-	"golang.org/x/tools/go/expect"
 	"golang.org/x/tools/go/ssa"
+	"golang.org/x/tools/internal/expect"
 )
 
 func TestObjValueLookup(t *testing.T) {

gopls/internal/cache/mod_tidy.go

@@ -267,7 +267,7 @@ func missingModuleDiagnostics(ctx context.Context, snapshot *Snapshot, pm *Parse
 			// Example:
 			//
 			// import (
-			//   "golang.org/x/tools/go/expect"
+			//   "golang.org/x/tools/internal/expect"
 			//   "golang.org/x/tools/go/packages"
 			// )
 			// They both are related to the same module: "golang.org/x/tools".

gopls/internal/test/marker/doc.go

@@ -10,7 +10,7 @@ Use this command to run the tests:
 
 	$ go test ./gopls/internal/test/marker [-update]
 
-A marker test uses the '//@' marker syntax of the x/tools/go/expect package
+A marker test uses the '//@' marker syntax of the x/tools/internal/expect package
 to annotate source code with various information such as locations and
 arguments of LSP operations to be executed by the test. The syntax following
 '@' is parsed as a comma-separated list of ordinary Go function calls, for
@@ -277,7 +277,7 @@ The following markers are supported within marker tests:
 
 # Argument conversion
 
-Marker arguments are first parsed by the go/expect package, which accepts
+Marker arguments are first parsed by the internal/expect package, which accepts
 the following tokens as defined by the Go spec:
   - string, int64, float64, and rune literals
   - true and false

gopls/internal/test/marker/marker_test.go

@@ -30,7 +30,6 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"golang.org/x/tools/go/expect"
 	"golang.org/x/tools/gopls/internal/cache"
 	"golang.org/x/tools/gopls/internal/debug"
 	"golang.org/x/tools/gopls/internal/lsprpc"
@@ -42,6 +41,7 @@ import (
 	"golang.org/x/tools/gopls/internal/util/safetoken"
 	"golang.org/x/tools/internal/diff"
 	"golang.org/x/tools/internal/diff/myers"
+	"golang.org/x/tools/internal/expect"
 	"golang.org/x/tools/internal/jsonrpc2"
 	"golang.org/x/tools/internal/jsonrpc2/servertest"
 	"golang.org/x/tools/internal/testenv"

internal/refactor/inline/inline_test.go

@@ -23,10 +23,10 @@ import (
 	"unsafe"
 
 	"golang.org/x/tools/go/ast/astutil"
-	"golang.org/x/tools/go/expect"
 	"golang.org/x/tools/go/packages"
 	"golang.org/x/tools/go/types/typeutil"
 	"golang.org/x/tools/internal/diff"
+	"golang.org/x/tools/internal/expect"
 	"golang.org/x/tools/internal/refactor/inline"
 	"golang.org/x/tools/internal/testenv"
 	"golang.org/x/tools/txtar"