refactor tests

test/run_utils.js

@@ -0,0 +1,58 @@
+export const run = tests => {
+  // Runs test, return failure or null if not failed
+  const run_test = t => {
+    return Promise.resolve().then(t.test)
+      .then(() => null)
+      .catch(e => {
+        if(globalThis.process != null) {
+          // In node.js runner, fail fast
+          console.error('Failed: ' + t.message)
+          throw e
+        } else {
+          return e
+        }
+      })
+  }
+
+  // If not run in node, then dont apply filter
+  const filter = globalThis.process && globalThis.process.argv[2]
+
+  if(filter == null) {
+
+    const only = tests.find(t => t.only)
+    const tests_to_run = only == null ? tests : [only]
+
+    // Exec each test. After all tests are done, we rethrow first error if
+    // any. So we will mark root calltree node if one of tests failed
+    return tests_to_run.reduce(
+      (failureP, t) => 
+        Promise.resolve(failureP).then(failure => 
+          run_test(t).then(next_failure => failure ?? next_failure)
+        )
+      ,
+      null
+    ).then(failure => {
+
+      if(failure != null) {
+        throw failure
+      } else {
+        if(globalThis.process != null) {
+          console.log('Ok')
+        }
+      }
+
+    })
+
+  } else {
+    const test = tests.find(t => t.message.includes(filter))
+    if(test == null) {
+      throw new Error('test not found')
+    } else {
+      return run_test(test).then(() => {
+        if(globalThis.process != null) {
+          console.log('Ok')
+        }
+      })
+    }
+  }
+}