Remove ES_NEXT macro (#4915)

- remove all '#JERRY_ESNEXT' macro
- remove 5.1 build profile, update test runner accordingly (Note: all builtins are turn on by default)
- move tests from tests/jerry/esnext into tests/jerry, concatenate files with same names
- add skiplist to some snapshot tests that were supported only in 5.1
- fix doxygen issues that were hidden before (bc. of es.next macro)

Co-authored-by: Martin Negyokru negyokru@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

tests/jerry/function-if.js

@@ -0,0 +1,119 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+function check_syntax_error (code)
+{
+  try {
+    eval (code)
+    assert (false)
+  } catch (e) {
+    assert (e instanceof SyntaxError)
+  }
+}
+
+check_syntax_error ("'use strict'; if (true) function f() {}")
+check_syntax_error ("'use strict'; if (true) ; else function f() {}")
+check_syntax_error ("'use strict'; a: function f() {}")
+check_syntax_error ("if (true) async function f() {}")
+check_syntax_error ("if (true) ; else async function f() {}")
+check_syntax_error ("if (true) a: function f() {}")
+check_syntax_error ("if (true) ; else a: function f() {}")
+
+var g = 1
+var h = 1
+
+function f1(p)
+{
+  assert(g === undefined)
+  assert(h === undefined)
+
+  if (p)
+    // Same as: { function g() { return 3 } }
+    function g() { return 3 }
+  else
+    // Same as: { function h() { return 4 } }
+    function h() { return 4 }
+
+  if (p) {
+    assert(g() === 3)
+    assert(h === undefined)
+  } else {
+    assert(g === undefined)
+    assert(h() === 4)
+  }
+}
+
+f1(true)
+f1(false)
+
+function f2()
+{
+  assert(g() === 2)
+  a: b: c: d: function g() { return 2 }
+
+  assert(h === undefined)
+
+  {
+    assert(h() === 3)
+    a: b: c: d: function h() { return 3 }
+  }
+
+  assert(h() === 3)
+
+  try {
+    assert(h() === 4)
+    a: b: c: d: function h() { return 4 }
+    throw 1
+  } catch (e) {
+    assert(h() === 5)
+    a: b: c: d: function h() { return 5 }
+  } finally {
+    assert(h() === 6)
+    a: b: c: d: function h() { return 6 }
+  }
+
+  assert(h() === 6)
+
+  switch (1) {
+  default:
+    assert(h() === 7)
+    a: b: c: d: function h() { return 7 }
+  }
+
+  assert(h() === 7)
+}
+f2()
+
+function f3()
+{
+  assert(h === undefined)
+
+  {
+    let a = eval("1")
+    assert(a === 1)
+    assert(h() === 1)
+    a: b: c: d: function h() { return 1 }
+  }
+
+  assert(h() === 1)
+
+  {
+    eval("a: b: c: d: function h() { return 2 }")
+    assert(h() === 2)
+  }
+
+  assert(h() === 2)
+}
+f3()