Merge pull request #668 from feathersjs-ecosystem/if-else-test

iff.else working

Author: fratzinger

src/hooks/iff-else.ts

@@ -10,7 +10,7 @@ import type { PredicateFn } from '../types';
 export function iffElse (
   predicate: boolean | PredicateFn,
   trueHooks: Hook | Hook[] | undefined,
-  falseHooks: Hook | Hook[] | undefined
+  falseHooks?: Hook | Hook[] | undefined
 ): Hook {
   // fnArgs is [context] for service & permission hooks, [data, connection, context] for event filters
   return function (this: any, ctx: HookContext) {

src/hooks/iff.ts

@@ -11,9 +11,10 @@ export function iff (
   ...hooks: Hook[]
 ): IffHook {
   const iffWithoutElse = function (context: HookContext) {
-    return iffElse(predicate, hooks.slice(), undefined)(context);
+    return iffElse(predicate, hooks.slice())(context);
   }
-  iffWithoutElse.else = (...falseHooks: any[]) => iffElse(true, falseHooks.slice(), []);
+
+  iffWithoutElse.else = (...falseHooks: any[]) => (context: HookContext) => iffElse(predicate, hooks.slice(), falseHooks.slice())(context);
 
   return iffWithoutElse;
 }

test/hooks/iff-else.test.ts

@@ -347,6 +347,25 @@ describe('services iff - runs .else()', () => {
       });
   });
 
+  it('using iff(true, ...).else(...)', () => {
+    return iff(true,
+      hookFcnSync,
+      hookFcnSync,
+      hookFcnSync
+    )
+      .else(
+        hookFcnSync
+      )(hook)
+      // @ts-ignore
+      .then((hook: any) => {
+        assert.equal(hookFcnSyncCalls, 3);
+        assert.equal(hookFcnAsyncCalls, 0);
+        assert.equal(hookFcnCalls, 0);
+
+        assert.deepEqual(hook, hookAfter);
+      });
+  });
+
   it('using if(false).else(...)', () => {
     return iff(false,
       hookFcnSync