feat: add handler test

Author: tyzerrr

ci.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+golangci-lint run --fix
+go fmt ./...

handler/handler.go

@@ -150,10 +150,7 @@ func (sh *SessionHandler) NewSession() error {
 func (sh *SessionHandler) sessionExists(sessionName string) bool {
 	cmd := sh.newTmuxCmd("tmux", "has-session", "-t", sessionName)
 	cmd.Stderr = io.Discard
-	if err := cmd.Run(); err == nil {
-		return true
-	}
-	return false
+	return cmd.Run() == nil
 }
 
 func (sh *SessionHandler) attach(sessionName string) error {

handler/handler_test.go

@@ -0,0 +1,90 @@
+package handler
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestParseConfig(t *testing.T) {
+	t.Parallel()
+	tmpRoot := t.TempDir()
+	project1Name, project2Name := "project1", "project2"
+	projectDir1 := filepath.Join(tmpRoot, project1Name)
+	projectDir2 := filepath.Join(tmpRoot, project2Name)
+	projects := []string{projectDir1, projectDir2}
+	os.Mkdir(projectDir1, 0755)
+	os.Mkdir(projectDir2, 0755)
+
+	configContent := fmt.Sprintf("default=%s", tmpRoot)
+
+	tmpConfigFile := filepath.Join(tmpRoot, ".tmux-sessionizer")
+	if err := os.WriteFile(tmpConfigFile, []byte(configContent), 0644); err != nil {
+		t.Errorf("failed to write config file: %v", err)
+	}
+
+	sh := &SessionHandler{}
+	cfg, err := sh.parseConfig(tmpConfigFile)
+	if err != nil {
+		t.Errorf("failed to parse config file: %v", err)
+	}
+
+	if len(cfg.projects) != len(projects) {
+		t.Errorf("expected %v projects, but got %v", len(projects), len(cfg.projects))
+	}
+	wantNames := map[string]bool{project1Name: true, project2Name: true}
+	for _, p := range cfg.projects {
+		if !wantNames[p.name] {
+			t.Errorf("unexpected project: %+v", p)
+		}
+	}
+}
+
+func TestExpandPath(t *testing.T) {
+	t.Parallel()
+	type args struct {
+		relative string
+	}
+
+	tests := []struct {
+		name    string
+		args    args
+		want    string
+		wantErr error
+	}{
+		{
+			name: "home directory case",
+			args: args{
+				relative: "~/hoge/fuga",
+			},
+			/* I don't care about windows, sorry.*/
+			want:    os.Getenv("HOME") + "/hoge/fuga",
+			wantErr: nil,
+		},
+		{
+			name: "complex relative path case",
+			args: args{
+				relative: "~/puga/hoge/../../fuga",
+			},
+			want:    os.Getenv("HOME") + "/fuga",
+			wantErr: nil,
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			sh := SessionHandler{}
+			got, err := sh.expandPath(tt.args.relative)
+			if err != nil && !errors.Is(err, tt.wantErr) {
+				t.Errorf("failed to expand path: %v.", err)
+				return
+			}
+			if got != tt.want {
+				t.Errorf("failed to expandPath. expected: %v, but got %v", tt.want, got)
+			}
+		})
+	}
+}