tinygo.org/x/drivers@v0.27.1-0.20240509133757-7dbca2a54349/pcf8523/pcf8523_test.go (about)

     1  package pcf8523
     2  
     3  import (
     4  	"encoding/hex"
     5  	"testing"
     6  	"time"
     7  	"tinygo.org/x/drivers/tester"
     8  )
     9  
    10  func TestDecToBcd_RoundTrip(t *testing.T) {
    11  
    12  	for i := 0; i < 60; i++ {
    13  		a := bcd2bin(bin2bcd(i))
    14  		if a != i {
    15  			t.Logf("not equal: %d != %d", a, i)
    16  			t.FailNow()
    17  		}
    18  	}
    19  }
    20  
    21  func TestDevice_Reset(t *testing.T) {
    22  	bus := tester.NewI2CBus(t)
    23  	fake := bus.NewDevice(DefaultAddress)
    24  
    25  	dev := New(bus)
    26  
    27  	err := dev.Reset()
    28  	assertNoError(t, err)
    29  
    30  	assertEquals(t, fake.Registers[rControl1], 0x58)
    31  }
    32  
    33  func TestDevice_SetPowerManagement(t *testing.T) {
    34  	bus := tester.NewI2CBus(t)
    35  	fake := bus.NewDevice(DefaultAddress)
    36  
    37  	dev := New(bus)
    38  
    39  	err := dev.SetPowerManagement(PowerManagement_SwitchOver_ModeStandard)
    40  	assertNoError(t, err)
    41  
    42  	assertEquals(t, fake.Registers[rControl3], 0b100<<5)
    43  }
    44  
    45  func TestDevice_SetTime(t *testing.T) {
    46  	bus := tester.NewI2CBus(t)
    47  	fake := bus.NewDevice(DefaultAddress)
    48  
    49  	dev := New(bus)
    50  
    51  	pointInTime, _ := time.Parse(time.RFC3339, "2023-09-12T22:35:50Z")
    52  	err := dev.SetTime(pointInTime)
    53  	assertNoError(t, err)
    54  
    55  	actual := hex.EncodeToString(fake.Registers[rSeconds : rSeconds+7])
    56  	expected := "50352212020923"
    57  	assertEquals(t, actual, expected)
    58  }
    59  
    60  func TestDevice_ReadTime(t *testing.T) {
    61  	bus := tester.NewI2CBus(t)
    62  	fake := bus.NewDevice(DefaultAddress)
    63  
    64  	expectedPointInTime := time.Date(2023, 9, 12, 17, 55, 42, 0, time.UTC)
    65  	fake.Registers[rSeconds] = 0x42
    66  	fake.Registers[rMinutes] = 0x55
    67  	fake.Registers[rHours] = 0x17
    68  	fake.Registers[rDays] = 0x12
    69  	fake.Registers[rMonths] = 0x9
    70  	fake.Registers[rYears] = 0x23
    71  
    72  	dev := New(bus)
    73  
    74  	//when
    75  	actualPointInTime, err := dev.ReadTime()
    76  
    77  	//then
    78  	assertNoError(t, err)
    79  	assertEquals(t, actualPointInTime, expectedPointInTime)
    80  }
    81  
    82  func assertNoError(t testing.TB, e error) {
    83  	if e != nil {
    84  		t.Fatalf("unexpected error: %v", e)
    85  	}
    86  }
    87  func assertEquals[T comparable](t testing.TB, a, b T) {
    88  	if a != b {
    89  		t.Fatalf("%v != %v", a, b)
    90  	}
    91  }