What is the test for a partial or total intestacy in a will?

In Baldissera v. Baldassi (1997), 18 E.T.R. (2d) 128 (B.C.S.C.) at para. 10, Edwards J., citing The Canadian Law of Wills, vol. 2, confirmed that: There is a presumption against intestacy and the court will prefer an interpretation of the will which avoids an intestacy. And further, at para. 11, Edwards J. held: The court on reading the will as a whole may conclude that the testator clearly intended to dispose of his entire estate. Once such an intention is clear the court will construe the will so as to give effect to the will in preference to a construction which will result in a partial or total intestacy.