Merge pull request #82 from alexflint/subcommand-implv1.1.0

Add support for subcommands

1 files changed, 55 insertions, 0 deletions

diff --git a/reflect_test.go b/reflect_test.go
new file mode 100644
index 0000000..47e68b5
--- /dev/null
+++ b/reflect_test.go
@@ -0,0 +1,55 @@
+package arg
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func assertCanParse(t *testing.T, typ reflect.Type, parseable, boolean, multiple bool) {
+	p, b, m := canParse(typ)
+	assert.Equal(t, parseable, p, "expected %v to have parseable=%v but was %v", typ, parseable, p)
+	assert.Equal(t, boolean, b, "expected %v to have boolean=%v but was %v", typ, boolean, b)
+	assert.Equal(t, multiple, m, "expected %v to have multiple=%v but was %v", typ, multiple, m)
+}
+
+func TestCanParse(t *testing.T) {
+	var b bool
+	var i int
+	var s string
+	var f float64
+	var bs []bool
+	var is []int
+
+	assertCanParse(t, reflect.TypeOf(b), true, true, false)
+	assertCanParse(t, reflect.TypeOf(i), true, false, false)
+	assertCanParse(t, reflect.TypeOf(s), true, false, false)
+	assertCanParse(t, reflect.TypeOf(f), true, false, false)
+
+	assertCanParse(t, reflect.TypeOf(&b), true, true, false)
+	assertCanParse(t, reflect.TypeOf(&s), true, false, false)
+	assertCanParse(t, reflect.TypeOf(&i), true, false, false)
+	assertCanParse(t, reflect.TypeOf(&f), true, false, false)
+
+	assertCanParse(t, reflect.TypeOf(bs), true, true, true)
+	assertCanParse(t, reflect.TypeOf(&bs), true, true, true)
+
+	assertCanParse(t, reflect.TypeOf(is), true, false, true)
+	assertCanParse(t, reflect.TypeOf(&is), true, false, true)
+}
+
+type implementsTextUnmarshaler struct{}
+
+func (*implementsTextUnmarshaler) UnmarshalText(text []byte) error {
+	return nil
+}
+
+func TestCanParseTextUnmarshaler(t *testing.T) {
+	var u implementsTextUnmarshaler
+	var su []implementsTextUnmarshaler
+	assertCanParse(t, reflect.TypeOf(u), true, false, false)
+	assertCanParse(t, reflect.TypeOf(&u), true, false, false)
+	assertCanParse(t, reflect.TypeOf(su), true, false, true)
+	assertCanParse(t, reflect.TypeOf(&su), true, false, true)
+}