gopls/internal/lsp: enable min/max builtin completion test

For golang/go#59488

Change-Id: I93680138c90750454b4d94af6dc84fe942c9dd34
Reviewed-on: https://go-review.googlesource.com/c/tools/+/498516
Run-TryBot: Cuong Manh Le <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
Reviewed-by: Matthew Dempsky <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Auto-Submit: Cuong Manh Le <[email protected]>
gopls-CI: kokoro <[email protected]>

Author: cuonglm

gopls/internal/lsp/completion_test.go

@@ -25,8 +25,8 @@ func (r *runner) Completion(t *testing.T, src span.Span, test tests.Completion,
 		opts.LiteralCompletions = strings.Contains(string(src.URI()), "literal")
 		opts.ExperimentalPostfixCompletions = strings.Contains(string(src.URI()), "postfix")
 	})
-	got = filterSkipCompletionItems(tests.FilterBuiltins(src, got))
-	want := filterSkipCompletionItems(expected(t, test, items))
+	got = tests.FilterBuiltins(src, got)
+	want := expected(t, test, items)
 	if diff := tests.DiffCompletionItems(want, got); diff != "" {
 		t.Errorf("mismatching completion items (-want +got):\n%s", diff)
 	}
@@ -175,16 +175,3 @@ func (r *runner) callCompletion(t *testing.T, src span.Span, options func(*sourc
 	}
 	return list.Items
 }
-
-func filterSkipCompletionItems(items []protocol.CompletionItem) []protocol.CompletionItem {
-	n := 0
-	for _, item := range items {
-		// TODO(cuonglm): remove once https://go-review.googlesource.com/c/go/+/498495 land.
-		if item.Label == "max" || item.Label == "min" {
-			continue
-		}
-		items[n] = item
-		n++
-	}
-	return items[:n]
-}

gopls/internal/lsp/testdata/builtins/builtins.go

@@ -28,8 +28,8 @@ package builtins
 /* int8 */ //@item(int8, "int8", "", "type")
 /* iota */ //@item(iota, "iota", "", "const")
 /* len(v Type) int */ //@item(len, "len", "func(v Type) int", "func")
-/* max(x Type, y ...Type) Type */ //@item(max, "max", "func(x Type, y ...Type) Type", "func")
-/* min(y Type, y ...Type) Type */ //@item(min, "min", "func(y Type, y ...Type) Type", "func")
+/* max(x T, y ...T) T */ //@item(max, "max", "func(x T, y ...T) T", "func")
+/* min(y T, y ...T) T */ //@item(min, "min", "func(x T, y ...T) T", "func")
 /* make(t Type, size ...int) Type */ //@item(make, "make", "func(t Type, size ...int) Type", "func")
 /* new(Type) *Type */ //@item(new, "new", "func(Type) *Type", "func")
 /* nil */ //@item(_nil, "nil", "", "var")