Update github.com/jessevdk/go-flags

vendor/src/github.com/jessevdk/go-flags/arg_test.go

@@ -51,3 +51,113 @@ func TestPositionalRequired(t *testing.T) {
 
 	assertError(t, err, ErrRequired, "the required argument `Filename` was not provided")
 }
+
+func TestPositionalRequiredRest1Fail(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"yes"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{})
+
+	assertError(t, err, ErrRequired, "the required argument `Rest (at least 1 argument)` was not provided")
+}
+
+func TestPositionalRequiredRest1Pass(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"yes"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{"rest1"})
+
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+		return
+	}
+
+	if len(opts.Positional.Rest) != 1 {
+		t.Fatalf("Expected 1 positional rest argument")
+	}
+
+	assertString(t, opts.Positional.Rest[0], "rest1")
+}
+
+func TestPositionalRequiredRest2Fail(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"2"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{"rest1"})
+
+	assertError(t, err, ErrRequired, "the required argument `Rest (at least 2 arguments, but got only 1)` was not provided")
+}
+
+func TestPositionalRequiredRest2Pass(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"2"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{"rest1", "rest2", "rest3"})
+
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+		return
+	}
+
+	if len(opts.Positional.Rest) != 3 {
+		t.Fatalf("Expected 3 positional rest argument")
+	}
+
+	assertString(t, opts.Positional.Rest[0], "rest1")
+	assertString(t, opts.Positional.Rest[1], "rest2")
+	assertString(t, opts.Positional.Rest[2], "rest3")
+}
+
+func TestPositionalRequiredRestRangeFail(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"1-2"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{"rest1", "rest2", "rest3"})
+
+	assertError(t, err, ErrRequired, "the required argument `Rest (at most 2 arguments, but got 3)` was not provided")
+}
+
+func TestPositionalRequiredRestRangeEmptyFail(t *testing.T) {
+	var opts = struct {
+		Value bool `short:"v"`
+
+		Positional struct {
+			Rest []string `required:"0-0"`
+		} `positional-args:"yes"`
+	}{}
+
+	p := NewParser(&opts, None)
+	_, err := p.ParseArgs([]string{"some", "thing"})
+
+	assertError(t, err, ErrRequired, "the required argument `Rest (zero arguments)` was not provided")
+}