Add test for prettify_symbols

Author: jeremy-rifkin

test/unit/lib/formatting.cpp

@@ -369,4 +369,29 @@ TEST(FormatterTest, CopySemantics) {
     );
 }
 
+TEST(FormatterTest, PrettySymbols) {
+    auto normal_formatter = cpptrace::formatter{}
+        .prettify_symbols(false);
+    cpptrace::stacktrace trace;
+    trace.frames.push_back({0x1, 0x1001, {20}, {30}, "foo.cpp", "foo(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)", false});
+    auto res = split(normal_formatter.format(trace), "\n");
+    EXPECT_THAT(
+        res,
+        ElementsAre(
+            "Stack trace (most recent call first):",
+            "#0 0x0000000000000001 in foo(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) at foo.cpp:20:30"
+        )
+    );
+    auto pretty_formatter = cpptrace::formatter{}
+        .prettify_symbols(true);
+    res = split(pretty_formatter.format(trace), "\n");
+    EXPECT_THAT(
+        res,
+        ElementsAre(
+            "Stack trace (most recent call first):",
+            "#0 0x0000000000000001 in foo(std::string) at foo.cpp:20:30"
+        )
+    );
+}
+
 }