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test(arrow/array): add test to binary builder #636

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Merged
zeroshade merged 1 commit into from
Jan 16, 2026
Merged

test(arrow/array): add test to binary builder #636

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22 changes: 21 additions & 1 deletion arrow/array/binarybuilder_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,7 @@ func TestBinaryBuilder_AllEmptyValues(t *testing.T) {

ab2.Append([]byte(""))
ab2.Append([]byte(""))
ab2.Append([]byte(""))
ab2.AppendEmptyValue()

ar2 := ab2.NewBinaryArray()
defer ar2.Release()
Expand All @@ -199,4 +199,24 @@ func TestBinaryBuilder_AllEmptyValues(t *testing.T) {
assert.NotNil(t, ar2.Value(i), "value %d should not be nil", i)
assert.Equal(t, 0, len(ar2.Value(i)), "value %d should be empty slice", i)
}

// Case 3: All Null
ab3 := array.NewBinaryBuilder(mem, arrow.BinaryTypes.Binary)
defer ab3.Release()

ab3.AppendNull()
ab3.AppendNull()
ab3.AppendNull()

ar3 := ab3.NewBinaryArray()
defer ar3.Release()

assert.Equal(t, 3, ar3.Len())
assert.Equal(t, 3, ar3.NullN(), "all values should be null")

for i := 0; i < 3; i++ {
assert.True(t, ar3.IsNull(i), "value %d should be null", i)
assert.Empty(t, ar3.Value(i), "value %d should be nil", i)
assert.Zero(t, len(ar3.Value(i)), "value %d should be empty slice", i)
}
}