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multiagent/normalize_streaming_eof_test.go

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+package multiagent
+
+import (
+	"strings"
+	"testing"
+)
+
+// Eino execute 去重分支 EOF flush 须以 mainAssistantBuf 为基准计算 tail，
+// 若误用 TrimSpace(mainAssistantBuf)，会与已推前缀在空白处失配，normalize 走拼接路径叠字。
+func TestNormalizeStreamingDelta_eofTailUsesRawBufNotTrim(t *testing.T) {
+	wireAccum := "phrase "
+	rawFull := "phrase \n"
+	_, tail := normalizeStreamingDelta(wireAccum, rawFull)
+	if want := "\n"; tail != want {
+		t.Fatalf("tail=%q want %q", tail, want)
+	}
+
+	nextWrong, badTail := normalizeStreamingDelta(wireAccum, strings.TrimSpace(rawFull))
+	if badTail != "phrase" || nextWrong != "phrase phrase" {
+		t.Fatalf("trimmed full vs wire prefix mismatch should concat-append; got next=%q badTail=%q", nextWrong, badTail)
+	}
+}