Replace is_(int,object,resource,scalar) extensions with stubs

[BackEndTea]

These were the ones i found that didn't contain special logic besides just specifying the types.

[BackEndTea]

Looks like the test failures arent unique to this check.

I added another failing test case for is_string.
Looks like for is_int($value) === true does not correcly set the assert-if-false data

[rvanvelzen]

I'll be fixing the negation logic soon, which should resolve those failures.

[rvanvelzen]

You can fix the issue by applying this patch:

diff --git a/src/Analyser/TypeSpecifier.php b/src/Analyser/TypeSpecifier.php
index c70b847a5..f04522ca5 100644
--- a/src/Analyser/TypeSpecifier.php
+++ b/src/Analyser/TypeSpecifier.php
@@ -1270,9 +1270,9 @@ class TypeSpecifier
        {
                if ($context->null()) {
                        $asserts = $assertions->getAsserts();
-               } elseif ($context->truthy()) {
+               } elseif ($context->true()) {
                        $asserts = $assertions->getAssertsIfTrue();
-               } elseif ($context->falsey()) {
+               } elseif ($context->false()) {
                        $asserts = $assertions->getAssertsIfFalse();
                } else {
                        throw new ShouldNotHappenException();

[ondrejmirtes]

Thank you!

[rvanvelzen]

The new stubs don't need the double assertion anymore though :)

[ondrejmirtes]

Cleaned up :) 00d7cdb