Files
review-bot/gitea/diff_size_test.go
T
claw 49d6ca77a3
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refactor(gitea): eliminate retry duplication, harden redactURL and MaxInt64 edge case
- Extract doGetWithReader to share retry/backoff logic between doGet and
  doGetLimited, eliminating ~60 lines of duplicated code (addresses MINOR
  finding from all reviewers).
- redactURL now strips userinfo credentials (user:pass@host) in addition
  to query parameters (addresses security-review-bot finding).
- GetPullRequestDiff treats MaxDiffSize == math.MaxInt64 as disabled,
  preventing the silent enforcement bypass where the overflow clamp makes
  the size check unreachable (addresses security-review-bot finding).
- Improved error message wording: 'response exceeds N bytes' (NIT fix).
2026-05-13 13:39:37 +00:00

98 lines
2.3 KiB
Go

package gitea
import (
"context"
"errors"
"math"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
)
func TestGetPullRequestDiff_SizeLimits(t *testing.T) {
tests := []struct {
name string
diff string
maxDiffSize int64
wantErr error
wantDiff string
}{
{
name: "exceeds max size",
diff: strings.Repeat("+ added line\n", 1000), // ~13 KB
maxDiffSize: 100,
wantErr: ErrDiffTooLarge,
},
{
name: "within max size",
diff: "diff --git a/f.go b/f.go\n--- a/f.go\n+++ b/f.go\n@@ -1 +1 @@\n-old\n+new\n",
maxDiffSize: 1024,
wantDiff: "diff --git a/f.go b/f.go\n--- a/f.go\n+++ b/f.go\n@@ -1 +1 @@\n-old\n+new\n",
},
{
name: "exactly at limit",
diff: strings.Repeat("x", 50),
maxDiffSize: 50,
wantDiff: strings.Repeat("x", 50),
},
{
name: "one byte over limit",
diff: strings.Repeat("x", 51),
maxDiffSize: 50,
wantErr: ErrDiffTooLarge,
},
{
name: "disabled limit",
diff: strings.Repeat("x", 10000),
maxDiffSize: -1,
wantDiff: strings.Repeat("x", 10000),
},
{
name: "math.MaxInt64 treated as disabled",
diff: strings.Repeat("x", 10000),
maxDiffSize: math.MaxInt64,
wantDiff: strings.Repeat("x", 10000),
},
{
name: "default limit",
diff: "diff content",
maxDiffSize: 0, // zero means use DefaultMaxDiffSize
wantDiff: "diff content",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(tt.diff)) //nolint:errcheck // test handler
}))
defer server.Close()
client := NewClient(server.URL, "test-token")
client.MaxDiffSize = tt.maxDiffSize
client.RetryBackoff = []time.Duration{}
got, err := client.GetPullRequestDiff(context.Background(), "owner", "repo", 1)
if tt.wantErr != nil {
if err == nil {
t.Fatal("expected error, got nil")
}
if !errors.Is(err, tt.wantErr) {
t.Errorf("expected %v, got: %v", tt.wantErr, err)
}
return
}
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if got != tt.wantDiff {
t.Errorf("diff mismatch: got length %d, want length %d", len(got), len(tt.wantDiff))
}
})
}
}