Fix a bug where the compiler doesn't properly handle unquote-splice

Added test coverage as well

NEWS.rst

@@ -51,6 +51,7 @@ Bug Fixes
 * Fixed a REPL crash caused by illegle unicode escape string inputs
 * `NaN` can no longer create an infinite loop during macro-expansion
 * Fixed a bug that caused `try` to drop expressions
+* Fixed a bug where the compiler didn't properly compile `unquote-splice`
 
 Misc. Improvements
 ----------------------------

hy/compiler.py

@@ -723,7 +723,7 @@ class HyASTCompiler(object):
         ret.add_imports("hy", imports)
         return ret
 
-    @builds("unquote", "unquote-splicing")
+    @builds("unquote", "unquote-splice")
     def compile_unquote(self, expr):
         raise HyTypeError(expr,
                           "`%s' can't be used at the top-level" % expr[0])

tests/compilers/test_ast.py

@@ -588,6 +588,16 @@ def test_setv_builtins():
     """)
 
 
+def test_top_level_unquote():
+    with pytest.raises(HyTypeError) as excinfo:
+        can_compile("(unquote)")
+    assert excinfo.value.message == "`unquote' can't be used at the top-level"
+
+    with pytest.raises(HyTypeError) as excinfo:
+        can_compile("(unquote-splice)")
+    assert excinfo.value.message == "`unquote-splice' can't be used at the top-level"
+
+
 def test_lots_of_comment_lines():
     # https://github.com/hylang/hy/issues/1313
     can_compile(1000 * ";\n")