test(frontmatter): test simple frontmatter parser

core/frontmatter/doc.go

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+// Package frontmatter contains utilities for parsing front matter from documents.
+package frontmatter

core/frontmatter/parser.go

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+package frontmatter
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"io"
+)
+
+func ParseFrontMatter(r io.Reader) (map[string]string, error) {
+	scanner := bufio.NewScanner(r)
+	frontMatter := make(map[string]string)
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "---" {
+			break
+		}
+		parts := bytes.SplitN([]byte(line), []byte(":"), 2)
+		if len(parts) != 2 {
+			return nil, errors.New("invalid front matter format")
+		}
+		key := string(bytes.TrimSpace(parts[0]))
+		value := string(bytes.TrimSpace(parts[1]))
+		frontMatter[key] = value
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return frontMatter, nil
+}

test/doc.go

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+// Package test contains all test files for the project.
+package test

test/frontmatter_test.go

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+package test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/KristianJBorgwarth/dendrite.daemon/core/frontmatter"
+)
+
+func TestParseFrontMatter(t *testing.T) {
+	input := `title: My Note
+template: default
+tags: ["test", "note"]
+---
+This is the content of the note.`
+
+	expected := map[string]string{
+		"title":    "My Note",
+		"template": "default",
+		"tags":     `["test", "note"]`,
+	}
+
+	result, err := frontmatter.ParseFrontMatter(strings.NewReader(input))
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	for key, expectedValue := range expected {
+		if value, ok := result[key]; !ok || value != expectedValue {
+			t.Errorf("expected %s to be %s, got %s", key, expectedValue, value)
+		}
+	}
+}