github.com/balzaczyy/golucene@v0.0.0-20151210033525-d0be9ee89713/core/store/fst_test.go (about)

     1  package store
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/balzaczyy/golucene/core/codec"
     6  	"testing"
     7  )
     8  
     9  func TestClone(t *testing.T) {
    10  	fmt.Println("Testing Loading FST...")
    11  	path := "../search/testdata/belfrysample"
    12  	d, err := OpenFSDirectory(path)
    13  	if err != nil {
    14  		t.Error(err)
    15  	}
    16  	ctx := NewIOContextBool(false)
    17  	in, err := d.OpenInput("_0_Lucene41_0.tip", ctx)
    18  	if err != nil {
    19  		t.Error(err)
    20  	}
    21  	version, err := codec.CheckHeader(in, "BLOCK_TREE_TERMS_INDEX", 0, 1)
    22  	var indexDirOffset int64 = 0
    23  	if version < 1 {
    24  		indexDirOffset, err = in.ReadLong()
    25  		if err != nil {
    26  			t.Error(err)
    27  		}
    28  	} else { // >= 1
    29  		in.Seek(in.Length() - 8)
    30  		indexDirOffset, err = in.ReadLong()
    31  		if err != nil {
    32  			t.Error(err)
    33  		}
    34  	}
    35  	fmt.Println("indexDirOffset:", indexDirOffset)
    36  	in.Seek(indexDirOffset)
    37  
    38  	indexStartFP, err := in.ReadVLong()
    39  	if err != nil {
    40  		t.Error(err)
    41  	}
    42  	fmt.Println("indexStartFP:", indexStartFP)
    43  
    44  	fmt.Println("Before clone", in)
    45  	clone := in.Clone()
    46  	fmt.Println("After clone", clone)
    47  	if _, ok := clone.(*SimpleFSIndexInput); !ok {
    48  		t.Error("Clone() should return *SimpleFSIndexInput.")
    49  	}
    50  	clone.Seek(indexStartFP)
    51  	fmt.Println("After clone.Seek()", clone)
    52  
    53  	_, err = codec.CheckHeader(clone, "FST", 3, 4)
    54  	if err != nil {
    55  		t.Error(err)
    56  	}
    57  }