1 files changed, 143 insertions, 0 deletions
diff --git a/internal/askcli/formatter_test.go b/internal/askcli/formatter_test.go
new file mode 100644
index 0000000..394ea91
--- /dev/null
+++ b/internal/askcli/formatter_test.go
@@ -0,0 +1,143 @@
+package askcli
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestFormatTaskList(t *testing.T) {
+	tasks := []TaskExport{
+		{UUID: "uuid-1", Description: "Short task", Status: "pending", Priority: "H", Tags: []string{"cli"}, Urgency: 15.0},
+		{UUID: "uuid-2", Description: strings.Repeat("a", 100), Status: "completed", Priority: "M", Tags: []string{"agent", "test"}, Urgency: 5.0},
+		{UUID: "uuid-3", Description: "No tags task", Status: "waiting", Priority: "L", Tags: []string{}, Urgency: 8.0},
+	}
+	output := FormatTaskList(tasks)
+	lines := strings.Split(strings.TrimSpace(output), "\n")
+	if len(lines) < 3 {
+		t.Fatalf("FormatTaskList produced too few lines: %d", len(lines))
+	}
+	if !strings.Contains(lines[0], "UUID") || !strings.Contains(lines[0], "Priority") {
+		t.Fatalf("header missing UUID or Priority column: %s", lines[0])
+	}
+	if !strings.Contains(lines[2], "uuid-1") {
+		t.Fatalf("first task line missing uuid-1: %s", lines[2])
+	}
+	if strings.Contains(lines[2], "...") {
+		t.Fatalf("long description should be truncated with ...: %s", lines[2])
+	}
+}
+
+func TestFormatTaskInfo(t *testing.T) {
+	task := TaskExport{
+		UUID:        "test-uuid",
+		Description: "Test description",
+		Status:      "pending",
+		Priority:    "H",
+		Tags:        []string{"cli", "agent"},
+		Start:       "2026-03-22T10:00:00Z",
+		Urgency:     15.5,
+		Depends:     []string{"dep-1", "dep-2"},
+		Annotations: []struct {
+			Description string `json:"description"`
+			Entry       string `json:"entry"`
+		}{
+			{Description: "First note", Entry: "2026-03-22T11:00:00Z"},
+		},
+	}
+	output := FormatTaskInfo(task)
+	if !strings.Contains(output, "test-uuid") {
+		t.Fatalf("FormatTaskInfo missing UUID: %s", output)
+	}
+	if !strings.Contains(output, "H") {
+		t.Fatalf("FormatTaskInfo missing priority H: %s", output)
+	}
+	if !strings.Contains(output, "cli, agent") {
+		t.Fatalf("FormatTaskInfo missing tags: %s", output)
+	}
+	if !strings.Contains(output, "dep-1") {
+		t.Fatalf("FormatTaskInfo missing depends: %s", output)
+	}
+	if !strings.Contains(output, "First note") {
+		t.Fatalf("FormatTaskInfo missing annotation: %s", output)
+	}
+}
+
+func TestFormatSuccess(t *testing.T) {
+	output := FormatSuccess("test-uuid")
+	if !strings.Contains(output, "ok") || !strings.Contains(output, "test-uuid") {
+		t.Fatalf("FormatSuccess = %q, want ok + uuid", output)
+	}
+}
+
+func TestFormatError(t *testing.T) {
+	err := &testError{msg: "something went wrong"}
+	output := FormatError(err, "uuid-123")
+	if !strings.Contains(output, "error") || !strings.Contains(output, "uuid-123") || !strings.Contains(output, "something went wrong") {
+		t.Fatalf("FormatError = %q, want error + uuid + message", output)
+	}
+}
+
+func TestFormatError_NoUUID(t *testing.T) {
+	err := &testError{msg: "generic error"}
+	output := FormatError(err, "")
+	if !strings.Contains(output, "error") || !strings.Contains(output, "generic error") {
+		t.Fatalf("FormatError = %q, want error + message", output)
+	}
+}
+
+func TestIsNumericID(t *testing.T) {
+	if !IsNumericID("123") {
+		t.Error("IsNumericID(\"123\") = false, want true")
+	}
+	if !IsNumericID("0") {
+		t.Error("IsNumericID(\"0\") = false, want true")
+	}
+	if IsNumericID("uuid-123") {
+		t.Error("IsNumericID(\"uuid-123\") = true, want false")
+	}
+	if IsNumericID("abc") {
+		t.Error("IsNumericID(\"abc\") = true, want false")
+	}
+	if IsNumericID("12a") {
+		t.Error("IsNumericID(\"12a\") = true, want false")
+	}
+	if IsNumericID("") {
+		t.Error("IsNumericID(\"\") = true, want false")
+	}
+}
+
+func TestRejectNumericID(t *testing.T) {
+	output := RejectNumericID()
+	if !strings.Contains(output, "use UUID") {
+		t.Fatalf("RejectNumericID = %q, want use UUID message", output)
+	}
+}
+
+func TestFormatTaskInfo_NoOptionalFields(t *testing.T) {
+	task := TaskExport{
+		UUID:        "simple-uuid",
+		Description: "Simple task",
+		Status:      "pending",
+		Priority:    "M",
+		Tags:        []string{},
+		Urgency:     0,
+	}
+	output := FormatTaskInfo(task)
+	if !strings.Contains(output, "simple-uuid") {
+		t.Fatalf("FormatTaskInfo missing UUID: %s", output)
+	}
+	if strings.Contains(output, "Tags:") {
+		t.Fatalf("FormatTaskInfo should not contain Tags: for empty tags: %s", output)
+	}
+	if strings.Contains(output, "Depends:") {
+		t.Fatalf("FormatTaskInfo should not contain Depends: for empty depends: %s", output)
+	}
+}
+
+type testError struct {
+	msg string
+}
+
+func (e *testError) Error() string {
+	return e.msg
+}