From 40f94033649decaa49f935c81561973f868664a0 Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Thu, 12 Nov 1998 19:28:58 -0500
Subject: [svn-r905] Added test for writing dataset region references.

---
 test/trefer.c | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 185 insertions(+), 1 deletion(-)

diff --git a/test/trefer.c b/test/trefer.c
index c69d8ce..c72b5d8 100644
--- a/test/trefer.c
+++ b/test/trefer.c
@@ -35,6 +35,15 @@ static char		RcsId[] = "$Revision$";
 #define SPACE1_RANK	1
 #define SPACE1_DIM1	4
 
+/* 2-D dataset with fixed dimensions */
+#define SPACE2_NAME  "Space2"
+#define SPACE2_RANK	2
+#define SPACE2_DIM1	10
+#define SPACE2_DIM2	10
+
+/* Element selection information */
+#define POINT1_NPOINTS 10
+
 /****************************************************************
 **
 **  test_reference_obj(): Test basic H5R (reference) object reference code.
@@ -180,10 +189,184 @@ test_reference_obj(void)
     /* Free memory buffers */
     free(wbuf);
     free(rbuf);
+    free(tbuf);
 }   /* test_reference_obj() */
 
 /****************************************************************
 **
+**  test_reference_region(): Test basic H5R (reference) object reference code.
+**      Tests references to various kinds of objects
+** 
+****************************************************************/
+static void 
+test_reference_region(void)
+{
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dset1,	/* Dataset ID			*/
+                dset2;      /* Dereferenced dataset ID */
+    hid_t		sid1,       /* Dataspace ID	#1		*/
+                sid2;       /* Dataspace ID	#2		*/
+    hsize_t		dims1[] = {SPACE1_DIM1},
+            	dims2[] = {SPACE2_DIM1, SPACE2_DIM2};
+    hssize_t	start[SPACE2_RANK];     /* Starting location of hyperslab */
+    hsize_t		stride[SPACE2_RANK];    /* Stride of hyperslab */
+    hsize_t		count[SPACE2_RANK];     /* Element count of hyperslab */
+    hsize_t		block[SPACE2_RANK];     /* Block size of hyperslab */
+    hssize_t	coord1[POINT1_NPOINTS][SPACE2_RANK]; /* Coordinates for point selection */
+    hdset_reg_ref_t      *wbuf,      /* buffer to write to disk */
+               *rbuf;       /* buffer read from disk */
+    uint8      *dwbuf,      /* Buffer for writing numeric data to disk */
+               *drbuf;      /* Buffer for reading numeric data from disk */
+    uint8      *tu8;        /* Temporary pointer to uint8 data */
+    intn        i;          /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Testing Dataset Region Reference Functions\n"));
+
+    /* Allocate write & read buffers */
+    wbuf=malloc(sizeof(hdset_reg_ref_t)*SPACE1_DIM1);
+    rbuf=malloc(sizeof(hdset_reg_ref_t)*SPACE1_DIM1);
+    dwbuf=malloc(sizeof(uint8)*SPACE2_DIM1*SPACE2_DIM2);
+    drbuf=calloc(sizeof(uint8),SPACE2_DIM1*SPACE2_DIM2);
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(fid1, FAIL, "H5Fcreate");
+
+    /* Create dataspace for datasets */
+    sid2 = H5Screate_simple(SPACE2_RANK, dims2, NULL);
+    CHECK(sid2, FAIL, "H5Screate_simple");
+
+    /* Create a dataset */
+    dset2=H5Dcreate(fid1,"Dataset2",H5T_STD_U8LE,sid2,H5P_DEFAULT);
+    CHECK(dset2, FAIL, "H5Dcreate");
+
+    for(tu8=dwbuf,i=0; i<SPACE2_DIM1*SPACE2_DIM2; i++)
+        *tu8++=i*3;
+
+    /* Write selection to disk */
+    ret=H5Dwrite(dset2,H5T_STD_U8LE,H5S_ALL,H5S_ALL,H5P_DEFAULT,dwbuf);
+    CHECK(ret, FAIL, "H5Dwrite");
+
+    /* Close Dataset */
+    ret = H5Dclose(dset2);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Create dataspace for the reference dataset */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+    CHECK(sid1, FAIL, "H5Screate_simple");
+
+    /* Create a dataset */
+    dset1=H5Dcreate(fid1,"Dataset1",H5T_STD_REF_OBJ,sid1,H5P_DEFAULT);
+    CHECK(ret, FAIL, "H5Dcreate");
+
+    /* Create references */
+
+    /* Select 6x6 hyperslab for first reference */
+    start[0]=2; start[1]=2;
+    stride[0]=1; stride[1]=1;
+    count[0]=6; count[1]=6;
+    block[0]=1; block[1]=1;
+    ret = H5Sselect_hyperslab(sid2,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Store first dataset region */
+    ret = H5Rcreate(&wbuf[0],fid1,"/Dataset2",H5R_DATASET_REGION,sid2);
+    CHECK(ret, FAIL, "H5Rcreate");
+
+    /* Select sequence of ten points for second reference */
+    coord1[0][0]=6; coord1[0][1]=9;
+    coord1[1][0]=2; coord1[1][1]=2;
+    coord1[2][0]=8; coord1[2][1]=4;
+    coord1[3][0]=1; coord1[3][1]=6;
+    coord1[4][0]=2; coord1[4][1]=8;
+    coord1[5][0]=3; coord1[5][1]=2;
+    coord1[6][0]=0; coord1[6][1]=4;
+    coord1[7][0]=9; coord1[7][1]=0;
+    coord1[8][0]=7; coord1[8][1]=1;
+    coord1[9][0]=3; coord1[9][1]=3;
+    ret = H5Sselect_elements(sid2,H5S_SELECT_SET,POINT1_NPOINTS,(const hssize_t **)coord1);
+    CHECK(ret, FAIL, "H5Sselect_elements");
+
+    /* Store second dataset region */
+    ret = H5Rcreate(&wbuf[1],fid1,"/Dataset2",H5R_DATASET_REGION,sid2);
+    CHECK(ret, FAIL, "H5Rcreate");
+
+    /* Write selection to disk */
+    ret=H5Dwrite(dset1,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,wbuf);
+    CHECK(ret, FAIL, "H5Dwrite");
+
+    /* Close disk dataspace */
+    ret = H5Sclose(sid1);
+    CHECK(ret, FAIL, "H5Sclose");
+    
+    /* Close Dataset */
+    ret = H5Dclose(dset1);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close uint8 dataset dataspace */
+    ret = H5Sclose(sid2);
+    CHECK(ret, FAIL, "H5Sclose");
+    
+    /* Close file */
+    ret = H5Fclose(fid1);
+    CHECK(ret, FAIL, "H5Fclose");
+
+#ifdef LATER
+    /* Re-open the file */
+    fid1 = H5Fopen(FILE, H5F_ACC_RDWR, H5P_DEFAULT);
+    CHECK(fid1, FAIL, "H5Fopen");
+
+    /* Open the dataset */
+    dataset=H5Dopen(fid1,"/Dataset3");
+    CHECK(ret, FAIL, "H5Dcreate");
+
+    /* Read selection from disk */
+    ret=H5Dread(dataset,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,rbuf);
+    CHECK(ret, FAIL, "H5Dread");
+
+    /* Try to open objects */
+    dset2 = H5Rdereference(dataset,H5R_OBJECT,&rbuf[0]);
+    CHECK(dset2, FAIL, "H5Rdereference");
+
+    /* Check information in referenced dataset */
+    sid1 = H5Dget_space(dset2);
+    CHECK(sid1, FAIL, "H5Dget_space");
+
+    ret=H5Sget_simple_extent_npoints(sid1);
+    VERIFY(ret, 4, "H5Sget_simple_extent_npoints");
+
+    /* Read from disk */
+    ret=H5Dread(dset2,H5T_STD_U32LE,H5S_ALL,H5S_ALL,H5P_DEFAULT,drbuf);
+    CHECK(ret, FAIL, "H5Dread");
+
+    for(tu32=(uint32 *)drbuf,i=0; i<SPACE1_DIM1; i++,tu32++)
+        VERIFY(*tu32, (uint32)(i*3), "Data");
+
+    /* Close dereferenced Dataset */
+    ret = H5Dclose(dset2);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close file */
+    ret = H5Fclose(fid1);
+    CHECK(ret, FAIL, "H5Fclose");
+
+#endif /* LATER */
+
+    /* Free memory buffers */
+    free(wbuf);
+    free(rbuf);
+    free(dwbuf);
+    free(drbuf);
+}   /* test_reference_region() */
+
+/****************************************************************
+**
 **  test_reference(): Main H5R reference testing routine.
 ** 
 ****************************************************************/
@@ -194,7 +377,8 @@ test_reference(void)
     MESSAGE(5, ("Testing References\n"));
 
     /* These next tests use the same file */
-    test_reference_obj();      /* Test basic H5R object reference code */
+    test_reference_obj();       /* Test basic H5R object reference code */
+    test_reference_region();    /* Test basic H5R dataset region reference code */
 
 }   /* test_reference() */
 
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