func TestChaingMultipleTransformers(t *testing.T) {
f1 := func(ct contentTransformer) {
ct.Write(bytes.Replace(ct.Content(), []byte("f1"), []byte("f1r"), -1))
}
f2 := func(ct contentTransformer) {
ct.Write(bytes.Replace(ct.Content(), []byte("f2"), []byte("f2r"), -1))
}
f3 := func(ct contentTransformer) {
ct.Write(bytes.Replace(ct.Content(), []byte("f3"), []byte("f3r"), -1))
}
f4 := func(ct contentTransformer) {
ct.Write(bytes.Replace(ct.Content(), []byte("f4"), []byte("f4r"), -1))
}
tr := NewChain(f1, f2, f3, f4)
out := new(bytes.Buffer)
if err := tr.Apply(out, helpers.StringToReader("Test: f4 f3 f1 f2 f1 The End."), []byte("")); err != nil {
t.Errorf("Multi transformer chain returned an error: %s", err)
}
expected := "Test: f4r f3r f1r f2r f1r The End."
if string(out.Bytes()) != expected {
t.Errorf("Expected %s got %s", expected, string(out.Bytes()))
}
}
func TestFileBytes(t *testing.T) {
assert.Equal(t, []byte("abc"), NewFileWithContents("a", helpers.StringToReader("abc")).Bytes())
assert.Equal(t, []byte(""), NewFile("a").Bytes())
}
func TestFileString(t *testing.T) {
assert.Equal(t, "abc", NewFileWithContents("a", helpers.StringToReader("abc")).String())
assert.Equal(t, "", NewFile("a").String())
}