43     std::vector<StringSet::Match> matches;  in TEST()  local
44     EXPECT_TRUE(trie.FindAllPrefixMatches("hello there", &matches));  in TEST()
45     EXPECT_EQ(matches.size(), 2);  in TEST()
46     EXPECT_EQ(matches[0].id, 0 /*hell*/);  in TEST()
47     EXPECT_EQ(matches[0].match_length, 4 /*hell*/);  in TEST()
48     EXPECT_EQ(matches[1].id, 1 /*hello*/);  in TEST()
49     EXPECT_EQ(matches[1].match_length, 5 /*hello*/);  in TEST()
53     std::vector<StringSet::Match> matches;  in TEST()  local
54     EXPECT_TRUE(trie.FindAllPrefixMatches("he", &matches));  in TEST()
55     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()
59     std::vector<StringSet::Match> matches;  in TEST()  local
60     EXPECT_TRUE(trie.FindAllPrefixMatches("abcd", &matches));  in TEST()
61     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()
65     std::vector<StringSet::Match> matches;  in TEST()  local
66     EXPECT_TRUE(trie.FindAllPrefixMatches("", &matches));  in TEST()
67     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()
71     std::vector<StringSet::Match> matches;  in TEST()  local
72     EXPECT_TRUE(trie.FindAllPrefixMatches("hi there", &matches));  in TEST()
73     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()
77     std::vector<StringSet::Match> matches;  in TEST()  local
78     EXPECT_TRUE(trie.FindAllPrefixMatches(StringPiece("\0", 1), &matches));  in TEST()
79     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()
83     std::vector<StringSet::Match> matches;  in TEST()  local
85         trie.FindAllPrefixMatches(StringPiece("\xff, \xfe", 2), &matches));  in TEST()
86     EXPECT_THAT(matches, testing::IsEmpty());  in TEST()