feat(pty): add cols/rows methods and resize tests

addons/godot_xterm/native/src/pty.cpp

@@ -47,6 +47,14 @@ void PTY::_bind_methods() {
     ADD_SIGNAL(MethodInfo("data_received", PropertyInfo(Variant::PACKED_BYTE_ARRAY, "data")));
     ADD_SIGNAL(MethodInfo("exited", PropertyInfo(Variant::INT, "exit_code"), PropertyInfo(Variant::INT, "signal_code")));
 
+	ClassDB::bind_method(D_METHOD("set_cols", "num_cols"), &PTY::set_cols);
+	ClassDB::bind_method(D_METHOD("get_cols"), &PTY::get_cols);
+	ClassDB::add_property("PTY", PropertyInfo(Variant::INT, "cols"), "set_cols", "get_cols");
+
+	ClassDB::bind_method(D_METHOD("set_rows", "num_rows"), &PTY::set_rows);
+	ClassDB::bind_method(D_METHOD("get_rows"), &PTY::get_rows);
+	ClassDB::add_property("PTY", PropertyInfo(Variant::INT, "rows"), "set_rows", "get_rows");
+
 	ClassDB::bind_method(D_METHOD("get_env"), &PTY::get_env);
 	ClassDB::bind_method(D_METHOD("set_env", "env"), &PTY::set_env);
 	ClassDB::add_property("PTY", PropertyInfo(Variant::DICTIONARY, "env"), "set_env", "get_env");
@@ -90,10 +98,24 @@ PTY::PTY() {
     #endif
 }
 
+void PTY::set_cols(const int num_cols) {
+    if (cols != num_cols) {
+        cols = num_cols;
+        resize(cols, rows);
+    }
+}
+
 int PTY::get_cols() const {
    return cols;
 }
 
+void PTY::set_rows(const int num_rows) {
+    if (rows != num_rows) {
+        rows = num_rows;
+        resize(cols, rows);
+    }
+}
+
 int PTY::get_rows() const {
    return rows;
 }
@@ -127,14 +149,14 @@ String PTY::get_pts_name() const {
     return pts_name;
 }
 
-Error PTY::fork(const String &file, const PackedStringArray &args, const String &cwd, const int cols, const int rows) {
+Error PTY::fork(const String &file, const PackedStringArray &args, const String &cwd, const int p_cols, const int p_rows) {
     String fork_file = _get_fork_file(file);
     Dictionary fork_env = _get_fork_env();
     Dictionary result;
 
     #if defined(__linux__) || defined(__APPLE__)
     String helper_path = ProjectSettings::get_singleton()->globalize_path("res://addons/godot_xterm/native/bin/spawn-helper");
-    result = PTYUnix::fork(fork_file, args, _parse_env(fork_env), cwd, cols, rows, -1, -1, true, helper_path, Callable(this, "_on_exit"));
+    result = PTYUnix::fork(fork_file, args, _parse_env(fork_env), cwd, p_cols, p_rows, -1, -1, true, helper_path, Callable(this, "_on_exit"));
     #endif
 
     Error err = static_cast<Error>((int)result["error"]);
@@ -178,14 +200,22 @@ Error PTY::open(const int cols, const int rows) {
    Error err = static_cast<Error>((int)result["error"]);
    ERR_FAIL_COND_V(err != OK, err);
 
+   fd = result["master"];
    pts_name = result["pty"];
 
    return OK;
 }
 
-void PTY::resize(const int cols, const int rows) const {
+void PTY::resize(const int p_cols, const int p_rows) {
+    cols = p_cols;
+    rows = p_rows;
+
     #if defined(__linux__) || defined(__APPLE__)
+    if (fd > -1) {
         PTYUnix::resize(fd, cols, rows);
+    } else {
+        ERR_PRINT("fd <= -1");
+    }
     #endif
 }
 

addons/godot_xterm/native/src/pty.h

@@ -43,7 +43,9 @@ namespace godot
 
     Status status = STATUS_CLOSED;
 
+    void set_cols(const int num_cols);
     int get_cols() const;
+    void set_rows(const int num_rows);
     int get_rows() const;
 
     Dictionary get_env() const;
@@ -60,8 +62,8 @@ namespace godot
     Error fork(const String &file = "", const PackedStringArray &args = PackedStringArray(), const String &cwd = ".", const int cols = 80, const int rows = 24);
     void kill(const int signum = Signal::SIGNAL_SIGHUP);
     Error open(const int cols = 80, const int rows = 24);
-    void resize(const int cols, const int rows) const;
-    void resizev(const Vector2i &size) const { resize(size.x, size.y); };
+    void resize(const int cols, const int rows);
+    void resizev(const Vector2i &size) { resize(size.x, size.y); };
     void write(const Variant &data) const;
 
     void _notification(int p_what);
@@ -73,8 +75,8 @@ namespace godot
     int pid = -1;
     int fd = -1;
 
-    unsigned int cols = 0;
-    unsigned int rows = 0;
+    unsigned int cols = 80;
+    unsigned int rows = 24;
 
     Dictionary env = Dictionary();
     bool use_os_env = true;

test/test_nix.gd

@@ -152,55 +152,95 @@ class Helper:
 		return {rows = int(size.x), cols = int(size.y)}
 
 
-class XTestPTYSize:
-	extends NixTest
-	# Tests to check that psuedoterminal size (as reported by the stty command)
-	# matches the size of the Terminal node. Uses various scene tree layouts with
-	# Terminal and PTY nodes in different places.
-	# See: https://github.com/lihop/godot-xterm/issues/56
+class TestPTYSize:
+	extends GodotXtermTest
 
-	var terminal: Terminal
-	var scene: Node
 	var regex := RegEx.new()
 
+	func get_described_class():
+		return PTY
+
 	func before_all():
-		regex.compile(".*rows (?<rows>[0-9]+).*columns (?<columns>[0-9]+).*")
+		# Depending on the implementation, the output of stty -a may vary.
+		# For example, on linux the format is "rows 24; columns 80;", while on
+		# macOS it is "rows 24; columns 80;". This regex should match both.
+		(
+			regex
+			. compile(
+				".*rows (?<rows>[0-9]+).*columns (?<columns>[0-9]+).*|.*; (?<rows>[0-9]+) rows; (?<columns>[0-9]+) columns.*"
+			)
+		)
 
-	func before_each():
-		scene = add_child_autofree(preload("res://test/scenes/pty_and_terminal.tscn").instantiate())
-
-	func xtest_correct_stty_reports_correct_size():
-		for s in [
-			"PTYChild",
-			"PTYSiblingAbove",
-			"PTYSiblingBelow",
-			"PTYCousinAbove",
-			"PTYCousinBelow",
-			"PTYCousinAbove2",
-			"PTYCousinBelow2"
-		]:
-			subject = scene.get_node(s).find_child("PTY")
-			terminal = scene.get_node(s).find_child("Terminal")
-
-			subject.call_deferred("fork", OS.get_environment("SHELL"))
+	# Get the size as reported by stty.
+	func get_stty_size() -> Vector2i:
+		await wait_frames(1)
 		subject.call_deferred("write", "stty -a | head -n1\n")
 		var output := ""
-			while not "rows" in output and not "columns" in output:
-				output = (await subject.data_received).get_string_from_utf8()
+		while not "rows" in output or not "columns" in output:
+			output += (await subject.data_received).get_string_from_utf8()
 		var regex_match = regex.search(output)
 		var stty_rows = int(regex_match.get_string("rows"))
 		var stty_cols = int(regex_match.get_string("columns"))
+		return Vector2i(stty_cols, stty_rows)
 
-			assert_eq(
-				stty_rows,
-				terminal.get_rows(),
-				"Expected stty to report correct number of rows for layout '%s'" % s
-			)
-			assert_eq(
-				stty_cols,
-				terminal.get_cols(),
-				"Expected stty to report correct number of columns for layout '%s'" % s
-			)
+	func before_each():
+		super.before_each()
+		subject.call_deferred("fork", OS.get_environment("SHELL"))
+		await wait_for_signal(subject.data_received, 1)
+
+	func after_each():
+		subject.call_deferred("kill", PTY.SIGNAL_SIGHUP)
+		await wait_for_signal(subject.exited, 1)
+
+	func test_pty_default_size():
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(80, 24))
+
+	func test_pty_set_cols():
+		subject.set_cols(5768)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(5768, 24))
+
+	func test_pty_set_rows():
+		subject.set_rows(5768)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(80, 5768))
+
+	func test_pty_resize():
+		subject.resize(2778, 8120)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(2778, 8120))
+
+	func test_pty_resizev():
+		subject.resizev(Vector2i(2778, 8120))
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(2778, 8120))
+
+	func test_pty_min_size():
+		subject.resize(0, 0)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i.ZERO)
+
+	func test_pty_max_size():
+		subject.resize(65535, 65535)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(65535, 65535))
+
+	func test_pty_set_size_on_open():
+		subject = described_class.new()
+		add_child_autofree(subject)
+		subject.call_deferred("fork", OS.get_environment("SHELL"), [], ".", 2236, 1998)
+		var stty_size = await get_stty_size()
+		assert_eq(stty_size, Vector2i(2236, 1998))
+
+
+# FIXME: Currently tests fail when threads are disabled.
+class XTestPTYSizeNoThreads:
+	extends TestPTYSize
+
+	func before_each():
+		super.before_each()
+		subject.use_threads = false
 
 
 class LinuxHelper:

test/test_pty.gd

@@ -13,8 +13,7 @@ class TestInterface:
 
 	# Properties.
 
-	# TODO: Implement cols property.
-	func xtest_has_property_cols() -> void:
+	func test_has_property_cols() -> void:
 		assert_has_property_with_default_value("cols", 80)
 
 	func test_has_property_env() -> void:
@@ -22,8 +21,7 @@ class TestInterface:
 			"env", {"TERM": "xterm-256color", "COLORTERM": "truecolor"}
 		)
 
-	# TODO: Implement rows property.
-	func xtest_has_property_rows() -> void:
+	func test_has_property_rows() -> void:
 		assert_has_property_with_default_value("rows", 24)
 
 	# TODO: Implement terminal_path property.