Restructure tests. Remoe exposted fields from Chip and replace with g…

…etter functions.

gpioioctl/README.md

@@ -0,0 +1,7 @@
+# GPIO IOCTL 
+
+This directory contains an implementation for linux GPIO manipulation 
+using the ioctl v2 interface.
+
+Basic test is provided, but a much more complete smoke test is provided
+in periph.io/x/cmd/periph-smoketest/gpiosmoketest

gpioioctl/basic_test.go

@@ -0,0 +1,120 @@
+package gpioioctl
+
+// Copyright 2024 The Periph Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+//
+// Basic tests. More complete test is contained in the
+// periph.io/x/cmd/v3/periph-smoketest/gpiosmoketest
+// folder.
+import (
+	"testing"
+
+	"periph.io/x/conn/v3/driver/driverreg"
+	"periph.io/x/conn/v3/gpio/gpioreg"
+)
+
+var _test_line *GPIOLine
+
+func init() {
+	_, _ = driverreg.Init()
+}
+
+func TestChips(t *testing.T) {
+	if len(Chips) <= 0 {
+		t.Fatal("Chips contains no entries.")
+	}
+	chip := Chips[0]
+	if len(chip.Name()) == 0 {
+		t.Error("chip.Name() is 0 length")
+	}
+	if len(chip.Path())==0 {
+		t.Error("chip path is 0 length")
+	}
+	if len(chip.Label())==0 {
+		t.Error("chip label is 0 length!")
+	}
+	if len(chip.Lines()) != chip.LineCount() {
+		t.Errorf("Incorrect line count. Found: %d for LineCount, Returned Lines length=%d", chip.LineCount(), len(chip.Lines()))
+	}
+	for _, line := range chip.Lines() {
+		if len(line.Consumer()) == 0 {
+			_test_line = line
+			break
+		}
+	}
+	if _test_line == nil {
+		t.Error("Error finding unused line for testing!")
+	}
+	for _, c := range Chips {
+		s := c.String()
+		if len(s) == 0 {
+			t.Error("Error calling chip.String(). No output returned!")
+		} else {
+			t.Log(s)
+		}
+
+	}
+
+}
+
+func TestGPIORegistryByName(t *testing.T) {
+	outLine := gpioreg.ByName(_test_line.Name())
+	if outLine == nil {
+		t.Fatalf("Error retrieving GPIO Line %s", _test_line.Name())
+	}
+	if outLine.Name() != _test_line.Name() {
+		t.Errorf("Error checking name. Expected %s, received %s", _test_line.Name(), outLine.Name())
+	}
+
+	if outLine.Number() < 0 || outLine.Number() >= len(Chips[0].Lines()) {
+		t.Errorf("Invalid chip number %d received for %s", outLine.Number(), _test_line.Name())
+	}
+}
+
+// Test the consumer field. Since this actually configures a line for output,
+// it actually tests a fair amount of the code to request a line, and configure
+// it.
+func TestConsumer(t *testing.T) {
+
+	l := Chips[0].ByName(_test_line.Name())
+	if l == nil {
+		t.Fatalf("Error retrieving GPIO Line %s", _test_line.Name())
+	}
+	defer l.Close()
+	// Consumer isn't written until the line is configured.
+	err := l.Out(true)
+	if err != nil {
+		t.Errorf("l.Out() %s", err)
+	}
+	if l.Consumer() != string(consumer) {
+		t.Errorf("Incorrect consumer name. Expected consumer name %s on line. received empty %s", string(consumer), l.Consumer())
+	}
+}
+
+func TestNumber(t *testing.T) {
+	chip := Chips[0]
+	l := chip.ByName(_test_line.Name())
+	if l == nil {
+		t.Fatalf("Error retrieving GPIO Line %s", _test_line.Name())
+	}
+	if l.Number() < 0 || l.Number() >= chip.LineCount() {
+		t.Errorf("line.Number() returned value (%d) out of range", l.Number())
+	}
+	l2 := chip.ByNumber(l.Number())
+	if l2 == nil {
+		t.Errorf("retrieve Line from chip by number %d failed.", l.Number())
+	}
+
+}
+
+func TestString(t *testing.T) {
+	line := gpioreg.ByName(_test_line.Name())
+	if line == nil {
+		t.Fatalf("Error retrieving GPIO Line %s", _test_line.Name())
+	}
+	s := line.String()
+	if len(s) == 0 {
+		t.Errorf("GPIOLine.String() failed.")
+	}
+}

gpioioctl/example_test.go

@@ -1,9 +1,9 @@
 package gpioioctl_test
+
 // Copyright 2024 The Periph Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
-
 import (
 	"fmt"
 	"log"