use describe in docs

README.md

@@ -8,8 +8,8 @@ Test your Nix is only ticks.
 Make a test file:
 
 ```mytest.nix
-{ it, ... }:
-[
+{ describe, it, ... }:
+describe "what I'm testing" [
     (it "can add numbers" {
         actual = 2 + 2;
         expected = 4;

mytest.nix

@@ -1,4 +1,9 @@
-{it, ...}: [
+{
+  describe,
+  it,
+  ...
+}:
+describe "what I'm testing" [
   (it "can add numbers" {
     actual = 2 + 2;
     expected = 4;
@@ -7,8 +12,8 @@
     actual = 2 + 2;
     expected = 5;
   })
-  (it "won't throw a party" {
-    actual = "a party";
+  (it "throws a party" {
+    actual = throw "a party";
     throws = true;
   })
 ]

tix/it.nix

@@ -25,10 +25,12 @@ msg: {
     else v;
 
   success =
-  builtins.trace "testing if it ${msg}"
-  ( if throws
-    then (builtins.tryEval actual).success == false
-    else (a == e) );
+    builtins.trace "testing if it ${msg}"
+    (
+      if throws
+      then (builtins.tryEval actual).success == false
+      else (a == e)
+    );
 in
   {
     inherit success msg;