Add tests

Author: ludviggunne

test/testother.cpp

@@ -12892,6 +12892,26 @@ class TestOther : public TestFixture {
               "    friend int f() { int i = 5; return i; }\n"
               "};\n");
         ASSERT_EQUALS("", errout_str());
+
+        check("int x;\n"
+              "void f(int x) {}\n");
+        ASSERT_EQUALS("[test.cpp:1:5] -> [test.cpp:2:12]: (style) Argument 'x' shadows outer variable [shadowVariable]\n", errout_str());
+
+        check("void x() {}\n"
+              "void f(int x) {}\n");
+        ASSERT_EQUALS("[test.cpp:1:6] -> [test.cpp:2:12]: (style) Argument 'x' shadows outer function [shadowFunction]\n", errout_str());
+
+        check("struct S { int v; void func(int v); };\n"
+              "void S::func(int v) { this->v = v; }\n");
+        ASSERT_EQUALS("[test.cpp:1:16] -> [test.cpp:2:18]: (style) Argument 'v' shadows outer member [shadowMember]\n", errout_str());
+
+        check("struct S { int v; void func(void); };\n"
+              "void S::func() { int v = 0; }\n");
+        ASSERT_EQUALS("[test.cpp:1:16] -> [test.cpp:2:22]: (style) Local variable 'v' shadows outer member [shadowMember]\n", errout_str());
+
+        check("struct S { int v; explicit S(int v); };\n"
+              "S::S(int v) : v(v) {}\n");
+        ASSERT_EQUALS("", errout_str());
     }
 
     void knownArgument() {