go,internal,io,mime: use slices and maps to clean tests

Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Change-Id: Id9cb550884da817da96befdeccfecb3325fb4414
GitHub-Last-Rev: 7d64d78feb86e3ea1af6c24ea6782cb85731bb52
GitHub-Pull-Request: golang/go#67612
Reviewed-on: https://go-review.googlesource.com/c/go/+/587819
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

5 files changed, 11 insertions, 11 deletions

diff --git a/src/internal/dag/alg_test.go b/src/internal/dag/alg_test.go
index e5ea8b6ab6..0659eb18e3 100644
--- a/src/internal/dag/alg_test.go
+++ b/src/internal/dag/alg_test.go
@@ -5,7 +5,7 @@
 package dag
 
 import (
-	"reflect"
+	"slices"
 	"strings"
 	"testing"
 )
@@ -26,7 +26,7 @@ func TestTopo(t *testing.T) {
 	//
 	// "a" is a leaf.
 	wantNodes := strings.Fields("d c b a")
-	if !reflect.DeepEqual(wantNodes, got) {
+	if !slices.Equal(wantNodes, got) {
 		t.Fatalf("want topo sort %v, got %v", wantNodes, got)
 	}
 }
diff --git a/src/internal/dag/parse_test.go b/src/internal/dag/parse_test.go
index b2520c3659..dda304ad3e 100644
--- a/src/internal/dag/parse_test.go
+++ b/src/internal/dag/parse_test.go
@@ -5,7 +5,7 @@
 package dag
 
 import (
-	"reflect"
+	"slices"
 	"strings"
 	"testing"
 )
@@ -52,7 +52,7 @@ func TestParse(t *testing.T) {
 	g := mustParse(t, diamond)
 
 	wantNodes := strings.Fields("a b c d")
-	if !reflect.DeepEqual(wantNodes, g.Nodes) {
+	if !slices.Equal(wantNodes, g.Nodes) {
 		t.Fatalf("want nodes %v, got %v", wantNodes, g.Nodes)
 	}
 
diff --git a/src/internal/godebug/godebug_test.go b/src/internal/godebug/godebug_test.go
index 5d426fd52e..6929630356 100644
--- a/src/internal/godebug/godebug_test.go
+++ b/src/internal/godebug/godebug_test.go
@@ -11,7 +11,6 @@ import (
 	"internal/testenv"
 	"os"
 	"os/exec"
-	"reflect"
 	"runtime/metrics"
 	"slices"
 	"strings"
@@ -125,7 +124,7 @@ func TestCmdBisect(t *testing.T) {
 	}
 	slices.Sort(have)
 
-	if !reflect.DeepEqual(have, want) {
+	if !slices.Equal(have, want) {
 		t.Errorf("bad bisect output:\nhave %v\nwant %v\ncomplete output:\n%s", have, want, string(out))
 	}
 }
diff --git a/src/internal/profile/proto_test.go b/src/internal/profile/proto_test.go
index 46c6d83063..4c09f7c47e 100644
--- a/src/internal/profile/proto_test.go
+++ b/src/internal/profile/proto_test.go
@@ -5,7 +5,7 @@
 package profile
 
 import (
-	"reflect"
+	"slices"
 	"testing"
 )
 
@@ -34,7 +34,7 @@ func TestPackedEncoding(t *testing.T) {
 		},
 	} {
 		source := &packedInts{tc.uint64s, tc.int64s}
-		if got, want := marshal(source), tc.encoded; !reflect.DeepEqual(got, want) {
+		if got, want := marshal(source), tc.encoded; !slices.Equal(got, want) {
 			t.Errorf("failed encode %d, got %v, want %v", i, got, want)
 		}
 
@@ -43,10 +43,10 @@ func TestPackedEncoding(t *testing.T) {
 			t.Errorf("failed decode %d: %v", i, err)
 			continue
 		}
-		if got, want := dest.uint64s, tc.uint64s; !reflect.DeepEqual(got, want) {
+		if got, want := dest.uint64s, tc.uint64s; !slices.Equal(got, want) {
 			t.Errorf("failed decode uint64s %d, got %v, want %v", i, got, want)
 		}
-		if got, want := dest.int64s, tc.int64s; !reflect.DeepEqual(got, want) {
+		if got, want := dest.int64s, tc.int64s; !slices.Equal(got, want) {
 			t.Errorf("failed decode int64s %d, got %v, want %v", i, got, want)
 		}
 	}
diff --git a/src/internal/xcoff/file_test.go b/src/internal/xcoff/file_test.go
index a6722e9453..d1f10d6bf1 100644
--- a/src/internal/xcoff/file_test.go
+++ b/src/internal/xcoff/file_test.go
@@ -6,6 +6,7 @@ package xcoff
 
 import (
 	"reflect"
+	"slices"
 	"testing"
 )
 
@@ -87,7 +88,7 @@ func TestOpen(t *testing.T) {
 		if err != nil {
 			t.Error(err)
 		}
-		if !reflect.DeepEqual(tl, fl) {
+		if !slices.Equal(tl, fl) {
 			t.Errorf("open %s: loader import = %v, want %v", tt.file, tl, fl)
 		}
 	}