Add test coverage to pkg/signal

Signed-off-by: Naveed Jamil <naveed.jamil@tenpearls.com>

pkg/signal/signal_linux_test.go

@@ -0,0 +1,58 @@
+// +build darwin linux solaris
+
+package signal
+
+import (
+	"os"
+	"syscall"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCatchAll(t *testing.T) {
+	sigs := make(chan os.Signal, 1)
+	CatchAll(sigs)
+	defer StopCatch(sigs)
+
+	listOfSignals := map[string]string{
+		"CONT": syscall.SIGCONT.String(),
+		"HUP":  syscall.SIGHUP.String(),
+		"CHLD": syscall.SIGCHLD.String(),
+		"ILL":  syscall.SIGILL.String(),
+		"FPE":  syscall.SIGFPE.String(),
+		"CLD":  syscall.SIGCLD.String(),
+	}
+
+	for sigStr := range listOfSignals {
+		signal, ok := SignalMap[sigStr]
+		if ok {
+			go func() {
+				time.Sleep(1 * time.Millisecond)
+				syscall.Kill(syscall.Getpid(), signal)
+			}()
+
+			s := <-sigs
+			assert.EqualValues(t, s.String(), signal.String())
+		}
+
+	}
+}
+
+func TestStopCatch(t *testing.T) {
+	signal, _ := SignalMap["HUP"]
+	channel := make(chan os.Signal, 1)
+	CatchAll(channel)
+	go func() {
+
+		time.Sleep(1 * time.Millisecond)
+		syscall.Kill(syscall.Getpid(), signal)
+	}()
+	signalString := <-channel
+	assert.EqualValues(t, signalString.String(), signal.String())
+
+	StopCatch(channel)
+	_, ok := <-channel
+	assert.EqualValues(t, ok, false)
+}

pkg/signal/signal_test.go

@@ -0,0 +1,33 @@
+package signal
+
+import (
+	"syscall"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseSignal(t *testing.T) {
+	_, checkAtoiError := ParseSignal("0")
+	assert.EqualError(t, checkAtoiError, "Invalid signal: 0")
+
+	_, error := ParseSignal("SIG")
+	assert.EqualError(t, error, "Invalid signal: SIG")
+
+	for sigStr := range SignalMap {
+		responseSignal, error := ParseSignal(sigStr)
+		assert.NoError(t, error)
+		signal := SignalMap[sigStr]
+		assert.EqualValues(t, signal, responseSignal)
+	}
+}
+
+func TestValidSignalForPlatform(t *testing.T) {
+	isValidSignal := ValidSignalForPlatform(syscall.Signal(0))
+	assert.EqualValues(t, false, isValidSignal)
+
+	for _, sigN := range SignalMap {
+		isValidSignal = ValidSignalForPlatform(syscall.Signal(sigN))
+		assert.EqualValues(t, true, isValidSignal)
+	}
+}