tests are not stories, they are scientific observations. A measurement of the power of mind.
https://en.m.wikipedia.org/wiki/Swami_Rama
Śrī Swāmī Rāma (19251996) was an Indian yógī. Several Indian yogis have influenced Westerners including Swami Vivekananda, Ramkrishna Paramhansa, Paramhansa Yogananda and many more. Swami Rama was one of the first yogis, however, to be studied by Western scientists. In the 1960s he was examined by scientists at the Menninger Clinic who studied his ability to voluntarily control bodily processes (such as heartbeat, blood pressure, and body temperature) that are normally considered to be non-voluntary (autonomic).
https://en.m.wikipedia.org/wiki/Yoga_nidra#Scientific_evaluation
The swami demonstrated the capacity to enter the various states of consciousness at will, as evidenced by remarkable changes in the electrical activity of his brain. Upon relaxing himself in the laboratory, he first entered the yoga nidra state, producing 70% alpha wave discharge for a predetermined 5 minute period, simply by imagining an empty blue sky with occasional drifting clouds. [7] Next, Swami Rama entered a state of dreaming sleep which was accompanied by slower theta waves for 75% of the subsequent 5 minute test period.[7] This state, which he later described as being "noisy and unpleasant", was attained by "stilling the conscious mind and bringing forth the subconscious". In this state he had the internal experience of desires, ambitions, memories and past images in archetypal form rising sequentially from the subconscious and unconscious with a rush, each archetype occupying his whole awareness.[7]
Finally, the swami entered the state of (usually unconscious) deep sleep, as verified by the emergence of the characteristic pattern of slow rhythm delta waves. However, he remained perfectly aware throughout the entire experimental period.[7] He later recalled the various events which had occurred in the laboratory during the experiment, including all the questions that one of the scientists had asked him during the period of deep delta wave sleep, while his body lay snoring quietly.
http://www.consciouslifestylemag.com/siddhis-attain-yoga-powers/
Mainstream science is not so sure. Many scientists and scholars trained within the Western worldview regard such powers not as supernormal capacities of the human mind, but as superstitions used solely to promote religious faith.
In Buddhism, these are not miracles in the sense of being supernatural events, any more than the discovery and amazing uses of lasers are miraculous however they may appear to those ignorant of the nature and potentials of light. Such contemplatives claim to have realized the nature and potentials of consciousness far beyond anything known in contemporary science. What may appear supernatural to a scientist or a layperson may seem perfectly natural to an advanced contemplative, much as certain technological advances may appear miraculous to a contemplative.
Attaining The Siddhis
The whole history of science shows us that whenever the educated and scientific men of any age have denied the facts of other investigators on a priori grounds of absurdity or impossibility, the deniers have always been wrong.
Alfred Russell Wallace
The Yoga Sutras provide a taxonomy of supernormal mental powers and a means of obtaining them. Today we would classify most of the siddhis as various forms of psychic, or psi, phenomena. Others might be called exceptionally precise means of controlling the mind- body relationship.
Before we begin our scientific examination of the siddhis, it is noteworthy that Patanjali and others specifically highlighted the dangers of dwelling on the siddhis. Patanjali states in Sutra III.51 a warning that may be translated as:
Avoid invitations to display or identify with any accomplishments in yoga, including the siddhis, even if invited by a respected person, because this can reinforce ones sense of separate self, leading to ego, pride, and arrogance, and this becomes an impediment toward further spiritual unfoldment. There are many ways that this trap can manifest. If personal pride or greed causes one to be seduced by the ever-present challenge of proving ones abilities to skeptics, such as using psychic abilities to win a prize, then the power gained by that seduction is likely to corrupt the ethical restraints that are the very first lesson to learn on the eightfold path. That power corrupts is an unavoidable truth in human affairs, and the consequences of the fall in this case are profound because the goal of achieving enlightenment, which requires far more discipline than simply developing clairvoyance, is lost. Even if one does not personally identify with an attained siddhi, and instead attributes it to ones teacher or a particular lineage, the damage is done.