public void CallingDeletePrimaryKeyCreatesADeleteConstraintExpression()
{
var collectionMock = new Mock<ICollection<IMigrationExpression>>();
var contextMock = new Mock<IMigrationContext>();
contextMock.Setup(x => x.Expressions).Returns(collectionMock.Object);
var root = new DeleteExpressionRoot(contextMock.Object);
root.PrimaryKey("TestKey");
collectionMock.Verify(x => x.Add(It.Is<DeleteConstraintExpression>(e => e.Constraint.IsPrimaryKeyConstraint == true)));
collectionMock.Verify(x => x.Add(It.Is<DeleteConstraintExpression>(e => e.Constraint.ConstraintName == "TestKey")));
contextMock.VerifyGet(x => x.Expressions);
}
