Fix lib list --all not returning library includes in json output (#1147)

* Fix lib list --all not returning library includes in json output

* [skip changelog] Enhance integration test

Author: silvanocerza

Diff for: arduino/libraries/libraries.go

@@ -87,7 +87,7 @@ func (library *Library) String() string {
 }
 
 // ToRPCLibrary converts this library into an rpc.Library
-func (library *Library) ToRPCLibrary() *rpc.Library {
+func (library *Library) ToRPCLibrary() (*rpc.Library, error) {
 	pathOrEmpty := func(p *paths.Path) string {
 		if p == nil {
 			return ""
@@ -100,6 +100,18 @@ func (library *Library) ToRPCLibrary() *rpc.Library {
 		}
 		return p.String()
 	}
+
+	// If the the "includes" property is empty or not included in the "library.properties" file
+	// we search for headers by reading the library files directly
+	headers := library.DeclaredHeaders()
+	if len(headers) == 0 {
+		var err error
+		headers, err = library.SourceHeaders()
+		if err != nil {
+			return nil, fmt.Errorf("gathering library headers: %w", err)
+		}
+	}
+
 	return &rpc.Library{
 		Name:              library.Name,
 		Author:            library.Author,
@@ -124,9 +136,9 @@ func (library *Library) ToRPCLibrary() *rpc.Library {
 		Version:           library.Version.String(),
 		License:           library.License,
 		Examples:          library.Examples.AsStrings(),
-		ProvidesIncludes:  library.DeclaredHeaders(),
+		ProvidesIncludes:  headers,
 		CompatibleWith:    library.CompatibleWith,
-	}
+	}, nil
 }
 
 // SupportsAnyArchitectureIn returns true if any of the following is true:

Diff for: commands/compile/compile.go

@@ -194,21 +194,6 @@ func Compile(ctx context.Context, req *rpc.CompileReq, outStream, errStream io.W
 
 	builderCtx.SourceOverride = req.GetSourceOverride()
 
-	// Use defer() to create an rpc.CompileResp with all the information available at the
-	// moment of return.
-	defer func() {
-		if r != nil {
-			importedLibs := []*rpc.Library{}
-			for _, lib := range builderCtx.ImportedLibraries {
-				importedLibs = append(importedLibs, lib.ToRPCLibrary())
-			}
-
-			r.BuildPath = builderCtx.BuildPath.String()
-			r.UsedLibraries = importedLibs
-			r.ExecutableSectionsSize = builderCtx.ExecutableSectionsSize.ToRPCExecutableSectionSizeArray()
-		}
-	}()
-
 	// if --preprocess or --show-properties were passed, we can stop here
 	if req.GetShowProperties() {
 		return &rpc.CompileResp{}, builder.RunParseHardwareAndDumpBuildProperties(builderCtx)
@@ -259,6 +244,20 @@ func Compile(ctx context.Context, req *rpc.CompileReq, outStream, errStream io.W
 		}
 	}
 
+	importedLibs := []*rpc.Library{}
+	for _, lib := range builderCtx.ImportedLibraries {
+		rpcLib, err := lib.ToRPCLibrary()
+		if err != nil {
+			return nil, fmt.Errorf("converting library %s to rpc struct: %w", lib.Name, err)
+		}
+		importedLibs = append(importedLibs, rpcLib)
+	}
+
 	logrus.Tracef("Compile %s for %s successful", sketch.Name, fqbnIn)
-	return &rpc.CompileResp{}, nil
+
+	return &rpc.CompileResp{
+		BuildPath:              builderCtx.BuildPath.String(),
+		UsedLibraries:          importedLibs,
+		ExecutableSectionsSize: builderCtx.ExecutableSectionsSize.ToRPCExecutableSectionSizeArray(),
+	}, nil
 }

Diff for: commands/lib/list.go

@@ -103,8 +103,12 @@ func LibraryList(ctx context.Context, req *rpc.LibraryListReq) (*rpc.LibraryList
 		if lib.Available != nil {
 			release = lib.Available.ToRPCLibraryRelease()
 		}
+		rpcLib, err := lib.Library.ToRPCLibrary()
+		if err != nil {
+			return nil, fmt.Errorf("converting library %s to rpc struct: %w", lib.Library.Name, err)
+		}
 		instaledLib = append(instaledLib, &rpc.InstalledLibrary{
-			Library: lib.Library.ToRPCLibrary(),
+			Library: rpcLib,
 			Release: release,
 		})
 	}

Diff for: test/test_lib.py

@@ -145,6 +145,32 @@ def test_list_with_fqbn(run_command):
     assert data[0]["library"]["compatible_with"]["arduino:avr:uno"]
 
 
+def test_list_provides_includes_fallback(run_command):
+    # Verifies "provides_includes" field is returned even if libraries don't declare
+    # the "includes" property in their "library.properties" file
+    assert run_command("update")
+
+    # Install core
+    assert run_command("core install arduino:[email protected]")
+    assert run_command("lib install [email protected]")
+
+    # List all libraries, even the ones installed with the above core
+    result = run_command("lib list --all --fqbn arduino:avr:uno --format json")
+    assert result.ok
+    assert "" == result.stderr
+
+    data = json.loads(result.stdout)
+    assert 6 == len(data)
+
+    libs = {l["library"]["name"]: l["library"]["provides_includes"] for l in data}
+    assert ["SoftwareSerial.h"] == libs["SoftwareSerial"]
+    assert ["Wire.h"] == libs["Wire"]
+    assert ["EEPROM.h"] == libs["EEPROM"]
+    assert ["HID.h"] == libs["HID"]
+    assert ["SPI.h"] == libs["SPI"]
+    assert ["ArduinoJson.h", "ArduinoJson.hpp"] == libs["ArduinoJson"]
+
+
 def test_lib_download(run_command, downloads_dir):
 
     # Download a specific lib version