def test_lcd_print_long(capsys):
lcd = lcd_mock.LCD(
rs=board.D27,
backlight=board.D15,
enable=board.D22,
d4=board.D18,
d5=board.D23,
d6=board.D24,
d7=board.D25,
)
lcd.begin(20, 4)
# Flush the current stdout buffer from begin() and prints
_ = capsys.readouterr()
# print into the first line, too long
lcd.print("test string that's too long", 1, 1)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "|test string that's too long|\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
def test_lcd_begin_small_null(capsys):
lcd = lcd_mock.LCD(None, None, None, None, None, None, None)
lcd.begin(10, 2)
captured = capsys.readouterr()
assert captured.out == (
"*==========*\n" + "| |\n" + "| |\n" + "*==========*\n"
)
assert lcd.cols == 10
assert lcd.rows == 2
def test_lcd_create():
# the mock LCD doesn't use it's inputs, real or None inputs should work
lcd = lcd_mock.LCD(
rs=board.D27,
backlight=board.D15,
enable=board.D22,
d4=board.D18,
d5=board.D23,
d6=board.D24,
d7=board.D25,
)
assert lcd is not None
def test_lcd_no_begin():
lcd = lcd_mock.LCD(
rs=board.D27,
backlight=board.D15,
enable=board.D22,
d4=board.D18,
d5=board.D23,
d6=board.D24,
d7=board.D25,
)
# print without using begin() first
with pytest.raises(ValueError):
lcd.print("This should fail", 1, 1)
def test_lcd_begin_large_null(capsys):
lcd = lcd_mock.LCD(None, None, None, None, None, None, None)
lcd.begin(20, 4)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
assert lcd.cols == 20
assert lcd.rows == 4
def test_lcd_begin_small(capsys):
lcd = lcd_mock.LCD(
rs=board.D27,
backlight=board.D15,
enable=board.D22,
d4=board.D18,
d5=board.D23,
d6=board.D24,
d7=board.D25,
)
lcd.begin(10, 2)
captured = capsys.readouterr()
assert captured.out == (
"*==========*\n" + "| |\n" + "| |\n" + "*==========*\n"
)
assert lcd.cols == 10
assert lcd.rows == 2
def test_lcd_clear(capsys):
lcd = lcd_mock.LCD(None, None, None, None, None, None, None)
# test that a 20x4 empty box is properly shown on
lcd.begin(20, 4)
lcd.print("test string", 1, 2)
lcd.print("test string", 2, 2)
lcd.print("test string", 3, 2)
lcd.print("test string", 4, 2)
# Flush the current stdout buffer from begin() and prints
_ = capsys.readouterr()
# clear the LCD
lcd.clear()
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
# clear the LCD again
lcd.clear()
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
def test_lcd_print_right(capsys):
lcd = lcd_mock.LCD(
rs=board.D27,
backlight=board.D15,
enable=board.D22,
d4=board.D18,
d5=board.D23,
d6=board.D24,
d7=board.D25,
)
lcd.begin(20, 4)
# Flush the current stdout buffer from begin() output
_ = capsys.readouterr()
# print into the first line
lcd.print("test string 1", 1, 3)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| test string 1|\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
# print into the first line again
lcd.print("test string 1 (2)", 1, 3)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| test string 1 (2)|\n"
+ "| |\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
# print into the second line
lcd.print("test string 2", 2, 3)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| test string 1 (2)|\n"
+ "| test string 2|\n"
+ "| |\n"
+ "| |\n"
+ "*====================*\n"
)
# print into the third line
lcd.print("test string 3", 3, 3)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| test string 1 (2)|\n"
+ "| test string 2|\n"
+ "| test string 3|\n"
+ "| |\n"
+ "*====================*\n"
)
# print into the fourth line, too long
lcd.print("test string 4", 4, 3)
captured = capsys.readouterr()
assert captured.out == (
"*====================*\n"
+ "| test string 1 (2)|\n"
+ "| test string 2|\n"
+ "| test string 3|\n"
+ "| test string 4|\n"
+ "*====================*\n"
)
def test_lcd_create_null():
lcd = lcd_mock.LCD(None, None, None, None, None, None, None)
assert lcd is not None
def test_lcd_no_begin_null():
lcd = lcd_mock.LCD(None, None, None, None, None, None, None)
# print without using begin() first
with pytest.raises(ValueError):
lcd.print("This should fail", 1, 1)
