test(cpp): fix protobuf model CI failures

Share standard string stubs between the protobuf and Asio fixtures and regenerate expectations for their new source locations. Add the eight missing protobuf signature expectations.

Author: kumarak

cpp/ql/test/library-tests/dataflow/external-models/asio_streams.cpp

@@ -1,24 +1,11 @@
 
 // --- stub library headers ---
 
-namespace std {
-	typedef unsigned long size_t;
-	#define SIZE_MAX 0xFFFFFFFF
+#include "std_string.h"
 
-	template <class T> class allocator {
-	};
-
-	template<class charT> struct char_traits {
-	};
-
-	template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
-	class basic_string {
-	public:
-		basic_string(const charT* s, const Allocator& a = Allocator());
-	};
-
-	typedef basic_string<char> string;
+#define SIZE_MAX 0xFFFFFFFF
 
+namespace std {
 	class string_view {
 	public:
 		string_view(const char* s);

cpp/ql/test/library-tests/dataflow/external-models/flow.expected

@@ -1,26 +1,9 @@
 
 // --- stub library headers ---
 
-namespace std {
-	typedef unsigned long size_t;
-
-	template <class T> class allocator {
-	};
-
-	template<class charT> struct char_traits {
-	};
-
-	template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
-	class basic_string {
-	public:
-		basic_string();
-		basic_string(const charT* s, const Allocator& a = Allocator());
-		const charT* data() const;
-		size_t size() const;
-	};
-
-	typedef basic_string<char> string;
+#include "std_string.h"
 
+namespace std {
 	class istream {
 	public:
 		istream();

cpp/ql/test/library-tests/dataflow/external-models/protobuf.cpp

@@ -1,5 +1,5 @@
-| asio_streams.cpp:135:29:135:39 | recv_buffer | remote-sink |
-| asio_streams.cpp:145:29:145:39 | send_buffer | remote-sink |
+| asio_streams.cpp:122:29:122:39 | recv_buffer | remote-sink |
+| asio_streams.cpp:132:29:132:39 | send_buffer | remote-sink |
 | test.cpp:12:10:12:10 | 0 | test-sink |
 | test.cpp:14:10:14:10 | x | test-sink |
 | test.cpp:18:10:18:10 | y | test-sink |

cpp/ql/test/library-tests/dataflow/external-models/sinks.expected

@@ -1,4 +1,4 @@
-| asio_streams.cpp:129:34:129:44 | read_until output argument | remote |
+| asio_streams.cpp:116:34:116:44 | read_until output argument | remote |
 | azure.cpp:253:48:253:60 | call to GetBodyStream | remote |
 | azure.cpp:273:52:273:61 | call to GetHeaders | remote |
 | azure.cpp:277:38:277:44 | call to GetBody | remote |

cpp/ql/test/library-tests/dataflow/external-models/sources.expected

@@ -0,0 +1,25 @@
+#ifndef CODEQL_TEST_STD_STRING_H
+#define CODEQL_TEST_STD_STRING_H
+
+namespace std {
+	typedef unsigned long size_t;
+
+	template <class T> class allocator {
+	};
+
+	template<class charT> struct char_traits {
+	};
+
+	template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+	class basic_string {
+	public:
+		basic_string();
+		basic_string(const charT* s, const Allocator& a = Allocator());
+		const charT* data() const;
+		size_t size() const;
+	};
+
+	typedef basic_string<char> string;
+}
+
+#endif

cpp/ql/test/library-tests/dataflow/external-models/std_string.h

@@ -14064,6 +14064,10 @@ getSignatureParameterName
 | (const Command *,const size_t,const BlockSplit *,const BlockSplit *,const BlockSplit *,const uint8_t *,size_t,size_t,uint8_t,uint8_t,const ContextType *,HistogramLiteral *,HistogramCommand *,HistogramDistance *) |  | BrotliBuildHistogramsWithContext | 11 | HistogramLiteral * |
 | (const Command *,const size_t,const BlockSplit *,const BlockSplit *,const BlockSplit *,const uint8_t *,size_t,size_t,uint8_t,uint8_t,const ContextType *,HistogramLiteral *,HistogramCommand *,HistogramDistance *) |  | BrotliBuildHistogramsWithContext | 12 | HistogramCommand * |
 | (const Command *,const size_t,const BlockSplit *,const BlockSplit *,const BlockSplit *,const uint8_t *,size_t,size_t,uint8_t,uint8_t,const ContextType *,HistogramLiteral *,HistogramCommand *,HistogramDistance *) |  | BrotliBuildHistogramsWithContext | 13 | HistogramDistance * |
+| (const Cord &) | MessageLite | MergeFromString | 0 | const Cord & |
+| (const Cord &) | MessageLite | MergePartialFromString | 0 | const Cord & |
+| (const Cord &) | MessageLite | ParseFromString | 0 | const Cord & |
+| (const Cord &) | MessageLite | ParsePartialFromString | 0 | const Cord & |
 | (const Curl_easy *,const connectdata *,int) |  | Curl_conn_is_http2 | 0 | const Curl_easy * |
 | (const Curl_easy *,const connectdata *,int) |  | Curl_conn_is_http2 | 1 | const connectdata * |
 | (const Curl_easy *,const connectdata *,int) |  | Curl_conn_is_http2 | 2 | int |
@@ -24746,6 +24750,10 @@ getSignatureParameterName
 | (string_buf *,unsigned char **,size_t *) |  | _libssh2_get_string | 0 | string_buf * |
 | (string_buf *,unsigned char **,size_t *) |  | _libssh2_get_string | 1 | unsigned char ** |
 | (string_buf *,unsigned char **,size_t *) |  | _libssh2_get_string | 2 | size_t * |
+| (string_view) | MessageLite | MergeFromString | 0 | string_view |
+| (string_view) | MessageLite | MergePartialFromString | 0 | string_view |
+| (string_view) | MessageLite | ParseFromString | 0 | string_view |
+| (string_view) | MessageLite | ParsePartialFromString | 0 | string_view |
 | (string_view,string_view) | basic_resolver<InternetProtocol> | resolve | 0 | string_view |
 | (string_view,string_view) | basic_resolver<InternetProtocol> | resolve | 1 | string_view |
 | (string_view,string_view,error_code &) | basic_resolver<InternetProtocol> | resolve | 0 | string_view |