异常抛出于此行
https://github.com/clojure/clojure/blob/clojure-1.9.0/src/jvm/clojure/lang/ExceptionInfo.java#L31
由于这个调用
https://github.com/clojure/spec.alpha/blob/spec.alpha-0.1.143/src/main/clojure/clojure/spec/test/alpha.clj#L279
如果`when-not`返回空值,`ExceptionInfo`将在第31行抛出异常。
一个简单的修复可能是
(apply ex-info (remove nil? (link: "基于规格的检查失败" (when-not ...))))
尽管这样实际上只是掩饰了问题,给失败者没有提供实际可操作的反馈。
不幸的是,我没有最小化的测试用例,因为这是专有代码(且复杂)。
也许作者通过阅读代码将会有更多的线索。
以下是完整的堆栈跟踪
(link: [clojure.lang.ExceptionInfo "ExceptionInfo.java" 31) (link: clojure.lang.ExceptionInfo "ExceptionInfo.java" 22) (link: clojure.core$ex_info invokeStatic "core.clj" 4739) (link: clojure.core$ex_info invoke "core.clj" 4739) (link: clojure.spec.test.alpha$explain_check invokeStatic "alpha.clj" 277) (link: clojure.spec.test.alpha$explain_check invoke "alpha.clj" 275) (link: clojure.spec.test.alpha$check_call invokeStatic "alpha.clj" 295) (link: clojure.spec.test.alpha$check_call invoke "alpha.clj" 285) (link: clojure.spec.test.alpha$quick_check$fn__2986 invoke "alpha.clj" 308) (link: clojure.lang.AFn applyToHelper "AFn.java" 154) (link: clojure.lang.AFn applyTo "AFn.java" 144) (link: clojure.core$apply invokeStatic "core.clj" 657) (link: clojure.core$apply invoke "core.clj" 652) (link: clojure.test.check.properties$apply_gen$fn__16139$fn__16140 invoke "properties.cljc" 30) (link: clojure.test.check.properties$apply_gen$fn__16139 invoke "properties.cljc" 29) (link: clojure.test.check.rose_tree$fmap invokeStatic "rose_tree.cljc" 77) (link: clojure.test.check.rose_tree$fmap invoke "rose_tree.cljc" 73) (link: clojure.test.check.generators$fmap$fn__9199 invoke "generators.cljc" 101) (link: clojure.test.check.generators$gen_fmap$fn__9173 invoke "generators.cljc" 57) (link: clojure.test.check.generators$call_gen invokeStatic "generators.cljc" 41) (link: clojure.test.check.generators$call_gen invoke "generators.cljc" 37) (link: clojure.test.check$quick_check invokeStatic "check.cljc" 94) (link: clojure.test.check$quick_check doInvoke "check.cljc" 37) (link: clojure.lang.RestFn invoke "RestFn.java" 425) (link: clojure.lang.AFn applyToHelper "AFn.java" 156) (link: clojure.lang.RestFn applyTo "RestFn.java" 132) (link: clojure.core$apply invokeStatic "core.clj" 657) (link: clojure.core$apply invoke "core.clj" 652) (link: clojure.spec.gen.alpha$quick_check invokeStatic "alpha.clj" 29) (link: clojure.spec.gen.alpha$quick_check doInvoke "alpha.clj" 27) (link: clojure.lang.RestFn applyTo "RestFn.java" 137) (link: clojure.core$apply invokeStatic "core.clj" 661) (link: clojure.core$apply invoke "core.clj" 652) (link: clojure.spec.test.alpha$quick_check invokeStatic "alpha.clj" 309) (link: clojure.spec.test.alpha$quick_check invoke "alpha.clj" 302) (link: clojure.spec.test.alpha$check_1 invokeStatic "alpha.clj" 335) (link: clojure.spec.test.alpha$check_1 invoke "alpha.clj" 323) (link: clojure.spec.test.alpha$check$fn__3005 invoke "alpha.clj" 411) (link: clojure.core$pmap$fn__8105$fn__8106 invoke "core.clj" 6942) (link: clojure.core$binding_conveyor_fn$fn__5476 invoke "core.clj" 2022) (link: clojure.lang.AFn call "AFn.java" 18) (link: java.util.concurrent.FutureTask run "FutureTask.java" 266) (link: java.util.concurrent.ThreadPoolExecutor runWorker "ThreadPoolExecutor.java" 1149) (link: java.util.concurrent.ThreadPoolExecutor$Worker run "ThreadPoolExecutor.java" 624) (link: java.lang.Thread run "Thread.java" 748)]