Adding Int64 and GlobalInt64 in context, plus related tests

context.go

@@ -31,6 +31,11 @@ func (c *Context) Int(name string) int {
 	return lookupInt(name, c.flagSet)
 }
 
+// Int64 looks up the value of a local int flag, returns 0 if no int flag exists
+func (c *Context) Int64(name string) int64 {
+	return lookupInt64(name, c.flagSet)
+}
+
 // Duration looks up the value of a local time.Duration flag, returns 0 if no
 // time.Duration flag exists
 func (c *Context) Duration(name string) time.Duration {
@@ -84,6 +89,14 @@ func (c *Context) GlobalInt(name string) int {
 	return 0
 }
 
+// GlobalInt64 looks up the value of a global int flag, returns 0 if no int flag exists
+func (c *Context) GlobalInt64(name string) int64 {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupInt64(name, fs)
+	}
+	return 0
+}
+
 // GlobalFloat64 looks up the value of a global float64 flag, returns float64(0)
 // if no float64 flag exists
 func (c *Context) GlobalFloat64(name string) float64 {
@@ -316,6 +329,19 @@ func lookupInt(name string, set *flag.FlagSet) int {
 	return 0
 }
 
+func lookupInt64(name string, set *flag.FlagSet) int64 {
+	f := set.Lookup(name)
+	if f != nil {
+		val, err := strconv.ParseInt(f.Value.String(), 10, 64)
+		if err != nil {
+			return 0
+		}
+		return val
+	}
+
+	return 0
+}
+
 func lookupDuration(name string, set *flag.FlagSet) time.Duration {
 	f := set.Lookup(name)
 	if f != nil {

context_test.go

@@ -9,17 +9,21 @@ import (
 func TestNewContext(t *testing.T) {
 	set := flag.NewFlagSet("test", 0)
 	set.Int("myflag", 12, "doc")
+	set.Int("myflagInt64", 12, "doc")
 	set.Float64("myflag64", float64(17), "doc")
 	globalSet := flag.NewFlagSet("test", 0)
 	globalSet.Int("myflag", 42, "doc")
+	globalSet.Int("myflagInt64", 42, "doc")
 	globalSet.Float64("myflag64", float64(47), "doc")
 	globalCtx := NewContext(nil, globalSet, nil)
 	command := Command{Name: "mycommand"}
 	c := NewContext(nil, set, globalCtx)
 	c.Command = command
 	expect(t, c.Int("myflag"), 12)
+	expect(t, c.Int64("myflagInt64"), int64(12))
 	expect(t, c.Float64("myflag64"), float64(17))
 	expect(t, c.GlobalInt("myflag"), 42)
+	expect(t, c.GlobalInt64("myflagInt64"), int64(42))
 	expect(t, c.GlobalFloat64("myflag64"), float64(47))
 	expect(t, c.Command.Name, "mycommand")
 }
@@ -31,6 +35,13 @@ func TestContext_Int(t *testing.T) {
 	expect(t, c.Int("myflag"), 12)
 }
 
+func TestContext_Int64(t *testing.T) {
+	set := flag.NewFlagSet("test", 0)
+	set.Int64("myflagInt64", 12, "doc")
+	c := NewContext(nil, set, nil)
+	expect(t, c.Int64("myflagInt64"), int64(12))
+}
+
 func TestContext_GlobalInt(t *testing.T) {
 	set := flag.NewFlagSet("test", 0)
 	set.Int("myflag", 12, "doc")
@@ -39,6 +50,14 @@ func TestContext_GlobalInt(t *testing.T) {
 	expect(t, c.GlobalInt("nope"), 0)
 }
 
+func TestContext_GlobalInt64(t *testing.T) {
+	set := flag.NewFlagSet("test", 0)
+	set.Int64("myflagInt64", 12, "doc")
+	c := NewContext(nil, set, nil)
+	expect(t, c.GlobalInt64("myflagInt64"), int64(12))
+	expect(t, c.GlobalInt64("nope"), int64(0))
+}
+
 func TestContext_Float64(t *testing.T) {
 	set := flag.NewFlagSet("test", 0)
 	set.Float64("myflag", float64(17), "doc")