Rewrite fzf in Go

src/tokenizer_test.go

@@ -0,0 +1,97 @@
+package fzf
+
+import "testing"
+
+func TestParseRange(t *testing.T) {
+	{
+		i := ".."
+		r, _ := ParseRange(&i)
+		if r.begin != RANGE_ELLIPSIS || r.end != RANGE_ELLIPSIS {
+			t.Errorf("%s", r)
+		}
+	}
+	{
+		i := "3.."
+		r, _ := ParseRange(&i)
+		if r.begin != 3 || r.end != RANGE_ELLIPSIS {
+			t.Errorf("%s", r)
+		}
+	}
+	{
+		i := "3..5"
+		r, _ := ParseRange(&i)
+		if r.begin != 3 || r.end != 5 {
+			t.Errorf("%s", r)
+		}
+	}
+	{
+		i := "-3..-5"
+		r, _ := ParseRange(&i)
+		if r.begin != -3 || r.end != -5 {
+			t.Errorf("%s", r)
+		}
+	}
+	{
+		i := "3"
+		r, _ := ParseRange(&i)
+		if r.begin != 3 || r.end != 3 {
+			t.Errorf("%s", r)
+		}
+	}
+}
+
+func TestTokenize(t *testing.T) {
+	// AWK-style
+	input := "  abc:  def:  ghi  "
+	tokens := Tokenize(&input, nil)
+	if *tokens[0].text != "abc:  " || tokens[0].prefixLength != 2 {
+		t.Errorf("%s", tokens)
+	}
+
+	// With delimiter
+	tokens = Tokenize(&input, delimiterRegexp(":"))
+	if *tokens[0].text != "  abc:" || tokens[0].prefixLength != 0 {
+		t.Errorf("%s", tokens)
+	}
+}
+
+func TestTransform(t *testing.T) {
+	input := "  abc:  def:  ghi:  jkl"
+	{
+		tokens := Tokenize(&input, nil)
+		{
+			ranges := splitNth("1,2,3")
+			tx := Transform(tokens, ranges)
+			if *tx.whole != "abc:  def:  ghi:  " {
+				t.Errorf("%s", *tx)
+			}
+		}
+		{
+			ranges := splitNth("1..2,3,2..,1")
+			tx := Transform(tokens, ranges)
+			if *tx.whole != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
+				len(tx.parts) != 4 ||
+				*tx.parts[0].text != "abc:  def:  " || tx.parts[0].prefixLength != 2 ||
+				*tx.parts[1].text != "ghi:  " || tx.parts[1].prefixLength != 14 ||
+				*tx.parts[2].text != "def:  ghi:  jkl" || tx.parts[2].prefixLength != 8 ||
+				*tx.parts[3].text != "abc:  " || tx.parts[3].prefixLength != 2 {
+				t.Errorf("%s", *tx)
+			}
+		}
+	}
+	{
+		tokens := Tokenize(&input, delimiterRegexp(":"))
+		{
+			ranges := splitNth("1..2,3,2..,1")
+			tx := Transform(tokens, ranges)
+			if *tx.whole != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
+				len(tx.parts) != 4 ||
+				*tx.parts[0].text != "  abc:  def:" || tx.parts[0].prefixLength != 0 ||
+				*tx.parts[1].text != "  ghi:" || tx.parts[1].prefixLength != 12 ||
+				*tx.parts[2].text != "  def:  ghi:  jkl" || tx.parts[2].prefixLength != 6 ||
+				*tx.parts[3].text != "  abc:" || tx.parts[3].prefixLength != 0 {
+				t.Errorf("%s", *tx)
+			}
+		}
+	}
+}