1 files changed, 68 insertions, 0 deletions
diff --git a/internal/multicase/multicase_test.go b/internal/multicase/multicase_test.go
new file mode 100644
index 0000000..6c737eb
--- /dev/null
+++ b/internal/multicase/multicase_test.go
@@ -0,0 +1,68 @@
+package multicase
+
+import "testing"
+
+var header = []string{"Firma", "Year", "Month", "Day", "Konto", "Bilagsnummer", "Belop", "MvaKode",
+	"BilagsArt", "BilagsArtTekst", "Tekst", "Faktura kundenr", "LevNr.", "BuntHodeID"}
+
+func row(account, number, amount, vat, typ, typeText, customer, batch string) []string {
+	return []string{"Demo AS", "2026", "10", "1", account, number, amount, vat, typ, typeText, "Demo", customer, "", batch}
+}
+
+func TestParse(t *testing.T) {
+	grid := [][]string{
+		header,
+		row("3000", "100", "-125", "3", "11", "Faktura", "20001", "1"),
+		row("20001", "100", "125", "", "11", "Faktura", "20001", "1"),
+		row("1460", "0", "-10", "", "31", "Lagerkorrigering", "", "1"),
+		row("4301", "0", "10", "", "31", "Lagerkorrigering", "", "1"),
+		row("1460", "0", "5", "", "31", "Lagerkorrigering", "", "2"),
+		row("4301", "0", "-5", "", "31", "Lagerkorrigering", "", "2"),
+	}
+	vs, err := Parse(grid)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(vs) != 3 {
+		t.Fatalf("got %d vouchers, want 3", len(vs))
+	}
+	keys := map[string]bool{}
+	for _, v := range vs {
+		keys[v.Key()] = true
+		if v.Balance() != 0 {
+			t.Errorf("%s does not balance", v.Label())
+		}
+	}
+	for _, k := range []string{"multicase:11:100", "multicase:31:bunt-1", "multicase:31:bunt-2"} {
+		if !keys[k] {
+			t.Errorf("missing voucher %s in %v", k, keys)
+		}
+	}
+	if got := vs[0].Lines[0].Amount; got != -12500 {
+		t.Errorf("amount = %d øre, want -12500", got)
+	}
+}
+
+func TestParseRejectsMissingColumns(t *testing.T) {
+	if _, err := Parse([][]string{{"Konto", "Belop"}}); err == nil {
+		t.Fatal("expected an error for a file that is not a buntfil")
+	}
+}
+
+func TestParseAmount(t *testing.T) {
+	tests := map[string]int64{
+		"":          0,
+		"46.7":      4670,
+		"-46.7":     -4670,
+		"44587.125": 4458713,
+		"-4053.375": -405338,
+		"0.1":       10,
+		"1,5":       150,
+	}
+	for in, want := range tests {
+		got, err := ParseAmount(in)
+		if err != nil || got != want {
+			t.Errorf("ParseAmount(%q) = %d, %v; want %d", in, got, err, want)
+		}
+	}
+}