hdf5/attribute_write_simple_test.go at main · scigolib/hdf5 · GitHub

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package hdf5

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TestWriteAttributeBasic tests basic attribute writing functionality.
func TestWriteAttributeBasic(t *testing.T) {
	fw, err := CreateForWrite("testdata/test_attr_basic.h5", CreateTruncate)
	require.NoError(t, err)
	defer func() {
		_ = fw.Close()
	}()

	ds, err := fw.CreateDataset("/data", Float64, []uint64{10})
	require.NoError(t, err)

	// Test int32
	err = ds.WriteAttribute("int_val", int32(42))
	assert.NoError(t, err)

	// Test float64
	err = ds.WriteAttribute("float_val", float64(3.14))
	assert.NoError(t, err)

	// Test string
	err = ds.WriteAttribute("units", "meters")
	assert.NoError(t, err)

	// Test array
	err = ds.WriteAttribute("calibration", []int32{1, 2, 3})
	assert.NoError(t, err)
}

// TestWriteAttributeErrorCases tests error handling.
func TestWriteAttributeErrorCases(t *testing.T) {
	t.Skip("SKIPPED: Fix attribute write error handling (known issue, not Phase 3)")
	fw, err := CreateForWrite("testdata/test_attr_errors.h5", CreateTruncate)
	require.NoError(t, err)
	defer func() {
		_ = fw.Close()
	}()

	ds, err := fw.CreateDataset("/data", Int32, []uint64{5})
	require.NoError(t, err)

	// Empty name
	err = ds.WriteAttribute("", int32(1))
	assert.Error(t, err)
	assert.Contains(t, err.Error(), "attribute name cannot be empty")

	// Duplicate attribute
	err = ds.WriteAttribute("test", int32(1))
	assert.NoError(t, err)

	err = ds.WriteAttribute("test", int32(2))
	assert.Error(t, err)
	assert.Contains(t, err.Error(), "already exists")
}