diff --git a/test/testcondition.cpp b/test/testcondition.cpp
index 71accd870..ed0a0a787 100644
--- a/test/testcondition.cpp
+++ b/test/testcondition.cpp
@@ -496,6 +496,13 @@ private:
                           "    else if (bar() >1 && b) {}\n"
                           "}");
         ASSERT_EQUALS("[test.cpp:5]: (style) Expression is always false because 'else if' condition matches previous condition at line 4.\n", errout.str());
+
+        // 7284
+        check("void foo() {\n"
+              "    if (a) {}\n"
+              "    else if (!!a) {}\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:3]: (style) Expression is always false because 'else if' condition matches previous condition at line 2.\n", errout.str());
     }
 
     void checkPureFunction(const char code[]) {
diff --git a/test/testother.cpp b/test/testother.cpp
index ca9c31534..71c675cb8 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -4082,6 +4082,19 @@ private:
               "    return a && b && c;\n"
               "}\n");
         ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:3]: (style) Same expression on both sides of '&&' because 'a' and 'c' represent the same value.\n", errout.str());
+
+        // 6906
+        check("void f(const bool b) {\n"
+              "   const bool b1 = !b;\n"
+              "   if(!b && b1){}\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:3]: (style) Same expression on both sides of '&&' because '!b' and 'b1' represent the same value.\n", errout.str());
+
+        // 7482
+        check("void f(void) {\n"
+              "   if (a || !!a) {}\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:2]: (style) Same expression on both sides of '||' because 'a' and '!!a' represent the same value.\n", errout.str());
     }
 
     void duplicateExpression8() {