Better paragraph splitting

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

pkg/xstrings/split_test.go

@@ -0,0 +1,79 @@
+package xstrings_test
+
+import (
+	xtrings "github.com/mudler/LocalAgent/pkg/xstrings"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("SplitParagraph", func() {
+	It("should return the text as a single chunk if it's shorter than maxLen", func() {
+		text := "Short text"
+		maxLen := 20
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"Short text"}))
+	})
+
+	It("should split the text into chunks of maxLen without truncating words", func() {
+		text := "This is a longer text that needs to be split into chunks."
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"This is a", "longer", "text that", "needs to", "be split", "into", "chunks."}))
+	})
+
+	It("should handle texts with multiple spaces and newlines correctly", func() {
+		text := "This  is\na\ntext  with\n\nmultiple spaces   and\nnewlines."
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"This  is\na\n", "text  with\n", "multiple", "spaces  ", "and\n", "newlines."}))
+	})
+
+	It("should handle a text with a single word longer than maxLen", func() {
+		text := "supercalifragilisticexpialidocious"
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"supercalifragilisticexpialidocious"}))
+	})
+
+	It("should handle a text with empty lines", func() {
+		text := "line1\n\nline2"
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"line1\n\n", "line2"}))
+	})
+
+	It("should handle a text with leading and trailing spaces", func() {
+		text := "   leading spaces and trailing spaces   "
+		maxLen := 15
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"   leading", "spaces and", "trailing spaces"}))
+	})
+
+	It("should handle a text with only spaces", func() {
+		text := "   "
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"   "}))
+	})
+
+	It("should handle empty string", func() {
+		text := ""
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{""}))
+	})
+
+	It("should handle a text with only newlines", func() {
+		text := "\n\n\n"
+		maxLen := 10
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"\n\n\n"}))
+	})
+
+	It("should handle a text with special characters", func() {
+		text := "This is a text with special characters !@#$%^&*()"
+		maxLen := 20
+		result := xtrings.SplitParagraph(text, maxLen)
+		Expect(result).To(Equal([]string{"This is a text with", "special characters", "!@#$%^&*()"}))
+	})
+})