July 28 (Reuters) - Chip-testing equipment maker Teradyne forecast third-quarter revenue above Wall Street estimates ‌on Tuesday, betting on a sustained rise ‌in investment in wafer fabrication equipment, sending the company's shares ​up 13.5% in extended trading. Growing demand for more complex and powerful chips used in AI data centers and vehicles has driven the need for ‌sophisticated, higher-priced testing ⁠equipment, benefiting suppliers such as Teradyne. The company is a supplier of automated ⁠test equipment used to verify the quality and reliability of semiconductors. Here are some details:• Teradyne expects ​third-quarter revenue ​between $1.20 billion and $1.30 ​billion, ahead of analysts' ‌average estimate of $1.04 billion, according to data compiled by LSEG. • ​The company's second-quarter revenue more than doubled to $1.33 billion, beating estimates of $1.22 billion.