Make exceptions easier to translate to error codes

Avoid throwing base Botan::Exception type, as it is difficult to
determine what the error is in that case.

Add Exception::error_code and Exception::error_type which allows
(for error code) more information about the error and (for error type)
allows knowing the error type without requiring a sequence of catches.

See GH #1742

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tests/test_tests.cpp b/src/tests/test_tests.cpp
index 49a05d6ab..a7324eef8 100644
--- a/src/tests/test_tests.cpp
+++ b/src/tests/test_tests.cpp
@@ -143,7 +143,7 @@ class Test_Tests final : public Test
             {
             Test::Result test_result(testcase_name);
             test_result.test_throws("test_throws", "expected msg",
-                                    []() { throw Botan::Exception("not the message"); });
+                                    []() { throw std::runtime_error("not the message"); });
             verify_failure("test_throws", result, test_result);
             }