1 files changed, 123 insertions, 0 deletions
diff --git a/internal/liturgy/parse_test.go b/internal/liturgy/parse_test.go
new file mode 100644
index 0000000..13732f9
--- /dev/null
+++ b/internal/liturgy/parse_test.go
@@ -0,0 +1,123 @@
+package liturgy
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestParse(t *testing.T) {
+	html, _ := os.ReadFile("testdata/2026-07-22.html")
+	secs, err := Parse(string(html))
+	if err != nil {
+		t.Fatal(err)
+	}
+	var gospel *Section
+	var firstCzytanie *Section
+	var secondCzytanie *Section
+	for i := range secs {
+		if strings.HasPrefix(secs[i].Heading, "Ewangelia") {
+			gospel = &secs[i]
+		}
+		if strings.HasPrefix(secs[i].Heading, "1. czytanie") {
+			if firstCzytanie == nil {
+				firstCzytanie = &secs[i]
+			} else if secondCzytanie == nil {
+				secondCzytanie = &secs[i]
+			}
+		}
+	}
+	if gospel == nil {
+		t.Fatal("no gospel section")
+	}
+	if gospel.Citation != "J 20, 1. 11-18" {
+		t.Errorf("gospel citation = %q", gospel.Citation)
+	}
+	if len(gospel.Paragraphs) == 0 {
+		t.Error("gospel has no paragraphs")
+	}
+	if gospel.PartID != "ewangelia" {
+		t.Errorf("gospel PartID = %q, want %q", gospel.PartID, "ewangelia")
+	}
+
+	if firstCzytanie == nil {
+		t.Fatal("no '1. czytanie' section")
+	}
+	if firstCzytanie.PartID != "pierwsze_czytanie" {
+		t.Errorf("first '1. czytanie' PartID = %q, want %q", firstCzytanie.PartID, "pierwsze_czytanie")
+	}
+	// 2026-07-22 is a split-feast day with two "1. czytanie" sections in the
+	// same tab; the second one must not collide with the first.
+	if secondCzytanie == nil {
+		t.Fatal("expected a second '1. czytanie' section (split feast fixture)")
+	}
+	if secondCzytanie.PartID != "drugie_czytanie" {
+		t.Errorf("second '1. czytanie' PartID = %q, want %q", secondCzytanie.PartID, "drugie_czytanie")
+	}
+}
+
+func TestParseLayoutChange(t *testing.T) {
+	if _, err := Parse("<html><body>redesigned</body></html>"); err == nil {
+		t.Error("expected error on missing reading tab")
+	}
+}
+
+func TestParseNormalDay(t *testing.T) {
+	html, err := os.ReadFile("testdata/2026-06-22.html")
+	if err != nil {
+		t.Fatal(err)
+	}
+	secs, err := Parse(string(html))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(secs) != 4 {
+		t.Fatalf("len(secs) = %d, want 4", len(secs))
+	}
+	want := map[string]string{
+		"1. czytanie": "pierwsze_czytanie",
+		"Psalm":       "psalm",
+		"Aklamacja":   "aklamacja",
+		"Ewangelia":   "ewangelia",
+	}
+	for _, s := range secs {
+		for prefix, partID := range want {
+			if strings.HasPrefix(s.Heading, prefix) {
+				if s.PartID != partID {
+					t.Errorf("heading %q: PartID = %q, want %q", s.Heading, s.PartID, partID)
+				}
+			}
+		}
+		if s.Subtitle == "" {
+			t.Errorf("heading %q: empty subtitle", s.Heading)
+		}
+		if len(s.Paragraphs) == 0 {
+			t.Errorf("heading %q: no paragraphs", s.Heading)
+		}
+	}
+}
+
+func TestExtractCitation(t *testing.T) {
+	cases := []struct {
+		heading string
+		want    string
+	}{
+		{"Ewangelia (Mt 7, 1-5)", "Mt 7, 1-5"},
+		{"1. czytanie (Pnp 8, 6-7)", "Pnp 8, 6-7"},
+		{"Psalm (Ps 63 (62), 2. 3-4. 5-6. 8-9 (R.: por. 2ab))", "Ps 63 (62), 2. 3-4. 5-6. 8-9 (R.: por. 2ab)"},
+	}
+	for _, c := range cases {
+		got, err := ExtractCitation(c.heading)
+		if err != nil {
+			t.Errorf("ExtractCitation(%q) error: %v", c.heading, err)
+			continue
+		}
+		if got != c.want {
+			t.Errorf("ExtractCitation(%q) = %q, want %q", c.heading, got, c.want)
+		}
+	}
+
+	if _, err := ExtractCitation("no parens here"); err == nil {
+		t.Error("expected error for heading with no parenthetical")
+	}
+}