virtualx-engine/tests/test_config_file.h

/*************************************************************************/
/*  test_config_file.h                                                   */
/*************************************************************************/
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#ifndef TEST_CONFIG_FILE_H
#define TEST_CONFIG_FILE_H

#include "core/io/config_file.h"

#include "tests/test_macros.h"

namespace TestConfigFile {

TEST_CASE("[ConfigFile] Parsing well-formatted files") {
	ConfigFile config_file;
	// Formatting is intentionally hand-edited to see how human-friendly the parser is.
	const Error error = config_file.parse(R"(
[player]

name = "Unnamed Player"
tagline="Waiting
for
Godot"

color =Color(   0, 0.5,1, 1) ; Inline comment
position= Vector2(
	3,
	4
)

[graphics]

antialiasing = true

; Testing comments and case-sensitivity...
antiAliasing = false
)");

	CHECK_MESSAGE(error == OK, "The configuration file should parse successfully.");
	CHECK_MESSAGE(
			String(config_file.get_value("player", "name")) == "Unnamed Player",
			"Reading `player/name` should return the expected value.");
	CHECK_MESSAGE(
			String(config_file.get_value("player", "tagline")) == "Waiting\nfor\nGodot",
			"Reading `player/tagline` should return the expected value.");
	CHECK_MESSAGE(
			Color(config_file.get_value("player", "color")).is_equal_approx(Color(0, 0.5, 1)),
			"Reading `player/color` should return the expected value.");
	CHECK_MESSAGE(
			Vector2(config_file.get_value("player", "position")).is_equal_approx(Vector2(3, 4)),
			"Reading `player/position` should return the expected value.");
	CHECK_MESSAGE(
			bool(config_file.get_value("graphics", "antialiasing")),
			"Reading `graphics/antialiasing` should return `true`.");
	CHECK_MESSAGE(
			bool(config_file.get_value("graphics", "antiAliasing")) == false,
			"Reading `graphics/antiAliasing` should return `false`.");

	// An empty ConfigFile is valid.
	const Error error_empty = config_file.parse("");
	CHECK_MESSAGE(error_empty == OK,
			"An empty configuration file should parse successfully.");
}

TEST_CASE("[ConfigFile] Parsing malformatted file") {
	ConfigFile config_file;
	ERR_PRINT_OFF;
	const Error error = config_file.parse(R"(
[player]

name = "Unnamed Player"" ; Extraneous closing quote.
tagline = "Waiting\nfor\nGodot"

color = Color(0, 0.5, 1) ; Missing 4th parameter.
position = Vector2(
	3,,
	4
) ; Extraneous comma.

[graphics]

antialiasing = true
antialiasing = false ; Duplicate key.
)");
	ERR_PRINT_ON;

	CHECK_MESSAGE(error == ERR_PARSE_ERROR,
			"The configuration file shouldn't parse successfully.");
}

TEST_CASE("[ConfigFile] Saving file") {
	ConfigFile config_file;
	config_file.set_value("player", "name", "Unnamed Player");
	config_file.set_value("player", "tagline", "Waiting\nfor\nGodot");
	config_file.set_value("player", "color", Color(0, 0.5, 1));
	config_file.set_value("player", "position", Vector2(3, 4));
	config_file.set_value("graphics", "antialiasing", true);
	config_file.set_value("graphics", "antiAliasing", false);

#ifdef WINDOWS_ENABLED
	const String config_path = OS::get_singleton()->get_environment("TEMP").plus_file("config.ini");
#else
	const String config_path = "/tmp/config.ini";
#endif

	config_file.save(config_path);

	// Expected contents of the saved ConfigFile.
	const String contents = R"([player]

name="Unnamed Player"
tagline="Waiting
for
Godot"
color=Color(0, 0.5, 1, 1)
position=Vector2(3, 4)

[graphics]

antialiasing=true
antiAliasing=false
)";

	FileAccessRef file = FileAccess::open(config_path, FileAccess::READ);
	CHECK_MESSAGE(file->get_as_utf8_string() == contents,
			"The saved configuration file should match the expected format.");
}
} // namespace TestConfigFile

#endif // TEST_CONFIG_FILE_H