func TestEvalSQLSubstring(t *testing.T) {
	evalCases := []struct {
		s           string
		startIdx    int
		length      int
		resExpected string
		errExpected error
	}{
		{"abcd", 1, 1, "a", nil},
		{"abcd", -1, 1, "a", nil},
		{"abcd", 999, 999, "", nil},
		{"", 999, 999, "", nil},
		{"测试abc", 1, 1, "测", nil},
		{"测试abc", 5, 5, "c", nil},
	}

	for i, tc := range evalCases {

    assertEqualCharNodes(traverser.breadthFirst(charactersOf("acdb")), "acdb");
    assertEqualCharNodes(traverser.breadthFirst(charactersOf("db")), "db");
  }

  @Test
  public void forGraph_breadthFirst_multiGraph() {
    Traverser<Character> traverser = Traverser.forGraph(MULTI_GRAPH);
    assertEqualCharNodes(traverser.breadthFirst('a'), "abcd");

    assertEqualCharNodes(traverser.breadthFirst(charactersOf("acdb")), "acdb");
    assertEqualCharNodes(traverser.breadthFirst(charactersOf("db")), "db");
  }

  @Test
  public void forGraph_breadthFirst_multiGraph() {
    Traverser<Character> traverser = Traverser.forGraph(MULTI_GRAPH);
    assertEqualCharNodes(traverser.breadthFirst('a'), "abcd");

		{bucketNames[1], objectNames[0], uploadIDs[3], 1, "abcd", "e2fc714c4727ee9395f324cd2e7f331f", int64(len("abcd")), "e2fc714c4727ee9395f324cd2e7f331f"},
		// Case 8-13.
		// Generating parts for different objects.

		if a != 1 || b != 2 || c != 3 || d != 4 {
			println("1# abcd: expected 1 2 3 4 got", a, b, c, d)
			os.Exit(1)
		}
	}
	// Test real closure.
	{
		x := 4
		gf = func(i int) (p int, q int, r int, s int) { return 1, i, 3, x }

		a, b, c, d := gf(2)

		if a != 1 || b != 2 || c != 3 || d != 4 {
			println("2# abcd: expected 1 2 3 4 got", a, b, c, d)
			os.Exit(1)
		}
	}
}

		{"", "", 0},
		{"", "abc", 0},
		{"abc", "", -1},
		{"abc", "abc", 0},
		{"d", "abcdefg", 3},
		{"nan", "banana", 2},
		{"pan", "anpanman", 2},
		{"nnaaman", "anpanmanam", -1},
		{"abcd", "abc", -1},
		{"abcd", "bcd", -1},
		{"bcd", "abcd", 1},
		{"abc", "acca", -1},
		{"aa", "aaa", 0},
		{"baa", "aaaaa", -1},
		{"at that", "which finally halts.  at that point", 22},
	}

	for _, tc := range testCases {

		commonPrefix string
	}{
		{[]string{"", ""}, ""},
		{[]string{"a", "b"}, ""},
		{[]string{"a", "a"}, "a"},
		{[]string{"a/", "a/"}, "a/"},
		{[]string{"abcd/", ""}, ""},
		{[]string{"abcd/foo/", "abcd/bar/"}, "abcd/"},
		{[]string{"abcd/foo/bar/", "abcd/foo/bar/zoo"}, "abcd/foo/bar/"},
	}

	for i, test := range testCases {
		foundPrefix := lcp(test.prefixes, true)
		if foundPrefix != test.commonPrefix {

class HasPrefixPatternStepTest extends Specification {
    def "matches name case sensitive"() {
        def step = new HasPrefixPatternStep(".abc", true)

        expect:
        step.matches(".abcd")
        step.matches(".abc")
        !step.matches(".")
        !step.matches(".a")
        !step.matches(".ab")
        !step.matches(".b")
        !step.matches(".bcd")
        !step.matches("_abc")

	if err != nil {
		t.Fatal(err)
	}
	// Upload a good object
	_, err = obj.DeleteObject(ctx, bucket, object, ObjectOptions{})
	if err != nil {
		t.Fatal(err)
	}

	// Create "obj" under "bucket".
	_, err = obj.PutObject(ctx, bucket, object, mustGetPutObjReader(t, bytes.NewReader([]byte("abcd")), int64(len("abcd")), "", ""), opts)

				Message:  "Access Denied.",
			},
			shouldPass: false,
		},
		// GET wrong credentials
		{
			method: http.MethodGet, bucketName: bucketName,
			accessKey:          "abcd",
			secretKey:          "abcd",
			expectedRespStatus: http.StatusForbidden,
			lifecycleResponse:  []byte(""),
			errorResponse: APIErrorResponse{
				Resource: SlashSeparator + bucketName + SlashSeparator,