chore: 初始化仓库，排除二进制文件和覆盖率文件

internal/handler/captcha_handler_test.go

@@ -0,0 +1,133 @@
+package handler
+
+import (
+	"testing"
+)
+
+// TestCaptchaHandler_RequestValidation 测试验证码请求验证逻辑
+func TestCaptchaHandler_RequestValidation(t *testing.T) {
+	tests := []struct {
+		name        string
+		captchaID   string
+		dx          int
+		wantValid   bool
+	}{
+		{
+			name:      "有效的请求参数",
+			captchaID: "captcha-123",
+			dx:        100,
+			wantValid: true,
+		},
+		{
+			name:      "captchaID为空",
+			captchaID: "",
+			dx:        100,
+			wantValid: false,
+		},
+		{
+			name:      "dx为0（可能有效）",
+			captchaID: "captcha-123",
+			dx:        0,
+			wantValid: true, // dx为0也可能是有效的（用户没有滑动）
+		},
+		{
+			name:      "dx为负数（可能无效）",
+			captchaID: "captcha-123",
+			dx:        -10,
+			wantValid: true, // 负数也可能是有效的，取决于业务逻辑
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			isValid := tt.captchaID != ""
+			if isValid != tt.wantValid {
+				t.Errorf("Request validation failed: got %v, want %v", isValid, tt.wantValid)
+			}
+		})
+	}
+}
+
+// TestCaptchaHandler_ResponseFormat 测试响应格式逻辑
+func TestCaptchaHandler_ResponseFormat(t *testing.T) {
+	tests := []struct {
+		name       string
+		valid      bool
+		wantCode   int
+		wantStatus string
+	}{
+		{
+			name:       "验证成功",
+			valid:      true,
+			wantCode:   200,
+			wantStatus: "验证成功",
+		},
+		{
+			name:       "验证失败",
+			valid:      false,
+			wantCode:   400,
+			wantStatus: "验证失败，请重试",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// 验证响应格式逻辑
+			var code int
+			var status string
+			if tt.valid {
+				code = 200
+				status = "验证成功"
+			} else {
+				code = 400
+				status = "验证失败，请重试"
+			}
+
+			if code != tt.wantCode {
+				t.Errorf("Response code = %d, want %d", code, tt.wantCode)
+			}
+			if status != tt.wantStatus {
+				t.Errorf("Response status = %q, want %q", status, tt.wantStatus)
+			}
+		})
+	}
+}
+
+// TestCaptchaHandler_ErrorHandling 测试错误处理逻辑
+func TestCaptchaHandler_ErrorHandling(t *testing.T) {
+	tests := []struct {
+		name      string
+		hasError  bool
+		wantCode  int
+		wantError bool
+	}{
+		{
+			name:      "生成验证码失败",
+			hasError:  true,
+			wantCode:  500,
+			wantError: true,
+		},
+		{
+			name:      "验证验证码失败",
+			hasError:  true,
+			wantCode:  500,
+			wantError: true,
+		},
+		{
+			name:      "参数错误",
+			hasError:  true,
+			wantCode:  400,
+			wantError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// 验证错误处理逻辑
+			if tt.hasError && !tt.wantError {
+				t.Error("Error handling logic failed")
+			}
+		})
+	}
+}
+