feat: add navigation and window size handlers with corresponding tests

internal/handlers/quitHandler_test.go

@@ -0,0 +1,99 @@
+package handlers_test
+
+import (
+	"slices"
+	"testing"
+
+	"github.com/StevanFreeborn/term-tier/internal/handlers"
+	"github.com/StevanFreeborn/term-tier/internal/state"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+func TestNewQuitHandler(t *testing.T) {
+	h := handlers.NewQuitHandler()
+
+	if h.Description() != "Quit" {
+		t.Errorf("Expected description 'Quit', got %q", h.Description())
+	}
+
+	keys := h.KeysHandled()
+
+	if !slices.Contains(keys, "q") || !slices.Contains(keys, "ctrl+c") {
+		t.Errorf("Expected keys ['q', 'ctrl+c'], got %v", keys)
+	}
+}
+
+func TestQuitHandler_Match(t *testing.T) {
+	h := handlers.NewQuitHandler()
+
+	tests := []struct {
+		name     string
+		mode     state.Mode
+		key      string
+		expected bool
+	}{
+		{
+			name:     "Matches 'q' in Navigation Mode",
+			mode:     state.NavigationMode,
+			key:      "q",
+			expected: true,
+		},
+		{
+			name:     "Matches 'ctrl+c' in Navigation Mode",
+			mode:     state.NavigationMode,
+			key:      "ctrl+c",
+			expected: true,
+		},
+		{
+			name:     "Ignores 'q' in Input Mode",
+			mode:     state.InputMode,
+			key:      "q",
+			expected: false,
+		},
+		{
+			name:     "Ignores 'ctrl+c' in Input Mode",
+			mode:     state.InputMode,
+			key:      "ctrl+c",
+			expected: false,
+		},
+		{
+			name:     "Ignores other keys in Navigation Mode",
+			mode:     state.NavigationMode,
+			key:      "x",
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			s := state.New(state.WithMode(tt.mode))
+			msg := tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune(tt.key)}
+
+			if tt.key == "ctrl+c" {
+				msg = tea.KeyMsg{Type: tea.KeyCtrlC}
+			}
+
+			if got := h.Match(s, msg); got != tt.expected {
+				t.Errorf("Match() = %v, want %v", got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestQuitHandler_Handle(t *testing.T) {
+	h := handlers.NewQuitHandler()
+	s := state.New(state.WithMode(state.NavigationMode))
+
+	msg := tea.KeyMsg{Type: tea.KeyRunes, Runes: []rune("q")}
+	cmd := h.Handle(s, msg)
+
+	if cmd == nil {
+		t.Fatal("Expected Handle to return a command, got nil")
+	}
+
+	cmdMsg := cmd()
+
+	if _, ok := cmdMsg.(tea.QuitMsg); !ok {
+		t.Errorf("Expected command to produce tea.QuitMsg, got %T", cmdMsg)
+	}
+}