[release/8.0] Skip duplicate --info output if it is known SDK output

src/installer/tests/HostActivation.Tests/DotnetArgValidation.cs

@@ -82,6 +82,35 @@ public void InvalidFileOrCommand_NoSDK_ListsPossibleIssues()
                 .And.FindAnySdk(false);
         }
 
+        [Fact]
+        public void DotNetInfo_NoSDK()
+        {
+            sharedTestState.BuiltDotNet.Exec("--info")
+                .CaptureStdOut()
+                .CaptureStdErr()
+                .Execute()
+                .Should().Pass()
+                .And.HaveStdOutMatching($@"Architecture:\s*{RepoDirectoriesProvider.Default.BuildArchitecture}")
+                .And.HaveStdOutMatching($@"RID:\s*{RepoDirectoriesProvider.Default.BuildRID}");
+        }
+
+        [Fact]
+        public void DotNetInfo_WithSDK()
+        {
+            DotNetCli dotnet = new DotNetBuilder(sharedTestState.BaseDirectory.Location, RepoDirectoriesProvider.Default.BuiltDotnet, "withSdk")
+                .AddMicrosoftNETCoreAppFrameworkMockHostPolicy("1.0.0")
+                .AddMockSDK("1.0.0", "1.0.0")
+                .Build();
+
+            dotnet.Exec("--info")
+                .WorkingDirectory(sharedTestState.BaseDirectory.Location)
+                .CaptureStdOut()
+                .CaptureStdErr()
+                .Execute()
+                .Should().Pass()
+                .And.NotHaveStdOutMatching($@"RID:\s*{RepoDirectoriesProvider.Default.BuildRID}");
+        }
+
         // Return a non-existent path that contains a mix of / and \
         private string GetNonexistentAndUnnormalizedPath()
         {

src/installer/tests/TestUtils/Assertions/CommandResultAssertions.cs

@@ -74,6 +74,13 @@ public AndConstraint<CommandResultAssertions> HaveStdOutMatching(string pattern,
             return new AndConstraint<CommandResultAssertions>(this);
         }
 
+        public AndConstraint<CommandResultAssertions> NotHaveStdOutMatching(string pattern, RegexOptions options = RegexOptions.None)
+        {
+            Execute.Assertion.ForCondition(!Regex.IsMatch(Result.StdOut, pattern, options))
+                .FailWith($"The command output matched a pattern is should not have matched. Pattern: '{pattern}'{GetDiagnosticsInfo()}");
+            return new AndConstraint<CommandResultAssertions>(this);
+        }
+
         public AndConstraint<CommandResultAssertions> HaveStdErr()
         {
             Execute.Assertion.ForCondition(!string.IsNullOrEmpty(Result.StdErr))

src/native/corehost/fxr/command_line.cpp

@@ -280,17 +280,18 @@ int command_line::parse_args_for_sdk_command(
     return parse_args(host_info, 1, argc, argv, false, host_mode_t::muxer, new_argoff, app_candidate, opts);
 }
 
-void command_line::print_muxer_info(const pal::string_t &dotnet_root, const pal::string_t &global_json_path)
+void command_line::print_muxer_info(const pal::string_t &dotnet_root, const pal::string_t &global_json_path, bool skip_sdk_info_output)
 {
     pal::string_t commit = _STRINGIFY(REPO_COMMIT_HASH);
     trace::println(_X("\n")
         _X("Host:\n")
         _X("  Version:      ") _STRINGIFY(HOST_VERSION) _X("\n")
         _X("  Architecture: ") _STRINGIFY(CURRENT_ARCH_NAME) _X("\n")
-        _X("  Commit:       %s\n")
-        _X("  RID:          %s"),
-        commit.substr(0, 10).c_str(),
-        get_runtime_id().c_str());
+        _X("  Commit:       %s"),
+        commit.substr(0, 10).c_str());
+
+    if (!skip_sdk_info_output)
+        trace::println(_X("  RID:          %s"), get_runtime_id().c_str());
 
     trace::println(_X("\n")
         _X(".NET SDKs installed:"));

src/native/corehost/fxr/command_line.h

@@ -57,7 +57,9 @@ namespace command_line
         /*out*/ pal::string_t &app_candidate,
         /*out*/ opt_map_t &opts);
 
-    void print_muxer_info(const pal::string_t &dotnet_root, const pal::string_t &global_json_path);
+    // skip_sdk_info_output indicates whether or not to skip any information that the SDK would have
+    // already printed. Related: https://github.com/dotnet/sdk/issues/33697
+    void print_muxer_info(const pal::string_t &dotnet_root, const pal::string_t &global_json_path, bool skip_sdk_info_output);
     void print_muxer_usage(bool is_sdk_present);
 };
 

src/native/corehost/fxr/fx_muxer.cpp

@@ -1055,7 +1055,7 @@ int fx_muxer_t::handle_cli(
         }
         else if (pal::strcasecmp(_X("--info"), argv[1]) == 0)
         {
-            command_line::print_muxer_info(host_info.dotnet_root, resolver.global_file_path());
+            command_line::print_muxer_info(host_info.dotnet_root, resolver.global_file_path(), false /*skip_sdk_info_output*/);
             return StatusCode::Success;
         }
 
@@ -1107,7 +1107,7 @@ int fx_muxer_t::handle_cli(
 
     if (pal::strcasecmp(_X("--info"), argv[1]) == 0)
     {
-        command_line::print_muxer_info(host_info.dotnet_root, resolver.global_file_path());
+        command_line::print_muxer_info(host_info.dotnet_root, resolver.global_file_path(), result == 0 /*skip_sdk_info_output*/);
     }
 
     return result;