backend/internal/httpapi/json_test.go - master - DexScen/ProjectPOH

backend/internal/httpapi/json_test.go
69 строк2 KB
Александр
changes
14 май 2026, 15:02
14 май 2026, 15:023f3feb2
package httpapi

import (
	"net/http/httptest"
	"strings"
	"testing"
)

func TestReadJSON(t *testing.T) {
	type payload struct {
		Name string `json:"name"`
	}

	t.Run("ok", func(t *testing.T) {
		req := httptest.NewRequest("POST", "/", strings.NewReader(`{"name":"alice"}`))
		var p payload
		if err := ReadJSON(req, &p); err != nil {
			t.Fatalf("unexpected error: %v", err)
		}
		if p.Name != "alice" {
			t.Fatalf("expected alice, got %q", p.Name)
		}
	})

	t.Run("unknown field", func(t *testing.T) {
		req := httptest.NewRequest("POST", "/", strings.NewReader(`{"name":"alice","x":1}`))
		var p payload
		if err := ReadJSON(req, &p); err == nil {
			t.Fatalf("expected error for unknown field")
		}
	})

	t.Run("multiple objects", func(t *testing.T) {
		req := httptest.NewRequest("POST", "/", strings.NewReader(`{"name":"a"}{"name":"b"}`))
		var p payload
		if err := ReadJSON(req, &p); err == nil {
			t.Fatalf("expected error for multiple objects")
		}
	})
}

func TestParsePositiveInt64(t *testing.T) {
	if _, err := ParsePositiveInt64("", "id"); err == nil {
		t.Fatalf("expected required error")
	}
	if _, err := ParsePositiveInt64("0", "id"); err == nil {
		t.Fatalf("expected positive integer error")
	}
	v, err := ParsePositiveInt64("42", "id")
	if err != nil || v != 42 {
		t.Fatalf("expected 42, got v=%d err=%v", v, err)
	}
}

func TestParsePagination(t *testing.T) {
	r := httptest.NewRequest("GET", "/?limit=200&offset=5", nil)
	limit, offset, err := ParsePagination(r, 20, 100)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if limit != 100 || offset != 5 {
		t.Fatalf("expected limit=100 offset=5 got limit=%d offset=%d", limit, offset)
	}

	r = httptest.NewRequest("GET", "/?limit=-1", nil)
	if _, _, err := ParsePagination(r, 20, 100); err == nil {
		t.Fatalf("expected limit validation error")
	}
}