Tests are an integral part of most formal language learning processes, exerting far-reaching effects on many aspects of language learning. Among other things, tests affect language learning motivation (LLM), an element that is fundamental to many learning contexts. However, little attention has been paid to how tests affect LLM and what the pedagogical implications may be. Using qualitative semi-structured interviews with 20 adolescent Arab learners, this study attempts to explore how and when tests can motivate or demotivate language learners. It also examines the main strategies learners deploy to cope with the demotivating experiences associated with test taking. The data suggest that tests have the potential to both motivate and demotivate learners before, during, and after taking a test. Additionally, the results reveal several strategies that learners employ to cope with demotivation. This leads to a discussion regarding pedagogical implications on how to effectively employ tests to increase learners’ motivation and decrease their demotivation.