[skip-changelog] Fixed initialization of profile libraries (#1739)

* Fixed initializaion of profile libraries

* Apply suggestions from code review

The library must be installed globally in order to provide coverage of the bug.
Co-authored-by: per1234 <accounts@perglass.com>
Co-authored-by: per1234 <accounts@perglass.com>

commands/compile/compile.go

@@ -124,7 +124,7 @@ func Compile(ctx context.Context, req *rpc.CompileRequest, outStream, errStream
 	builderCtx.OtherLibrariesDirs = paths.NewPathList(req.GetLibraries()...)
 	builderCtx.OtherLibrariesDirs.Add(configuration.LibrariesDir(configuration.Settings))
 	builderCtx.LibraryDirs = paths.NewPathList(req.Library...)
-	if len(builderCtx.OtherLibrariesDirs) > 0 || len(builderCtx.LibraryDirs) > 0 {
+	if len(req.GetLibraries()) > 0 || len(req.GetLibrary()) > 0 {
 		builderCtx.LibrariesManager = nil // let the builder rebuild the library manager
 	}
 	if req.GetBuildPath() == "" {

test/test_profiles.py

+# This file is part of arduino-cli.
+#
+# Copyright 2020 ARDUINO SA (http://www.arduino.cc/)
+#
+# This software is released under the GNU General Public License version 3,
+# which covers the main part of arduino-cli.
+# The terms of this license can be found at:
+# https://www.gnu.org/licenses/gpl-3.0.en.html
+#
+# You can be released from the requirements of the above licenses by purchasing
+# a commercial license. Buying such a license is mandatory if you want to modify or
+# otherwise use the software for commercial activities involving the Arduino
+# software without disclosing the source code of your own applications. To purchase
+# a commercial license, send an email to license@arduino.cc.
+
+
+def test_compile_with_profiles(run_command, copy_sketch):
+    # Init the environment explicitly
+    run_command(["core", "update-index"])
+
+    sketch_path = copy_sketch("sketch_with_profile")
+
+    # use profile without a required library -> should fail
+    assert run_command(["lib", "install", "Arduino_JSON"])
+    result = run_command(["compile", "-m", "avr1", sketch_path])
+    assert result.failed
+
+    # use profile with the required library -> should succeed
+    result = run_command(["compile", "-m", "avr2", sketch_path])
+    assert result.ok

test/testdata/sketch_with_profile/sketch.yaml

+profiles:
+  avr1:
+    fqbn: arduino:avr:uno
+    platforms:
+      - platform: arduino:avr (1.8.5)
+
+  avr2:
+    fqbn: arduino:avr:uno
+    platforms:
+      - platform: arduino:avr (1.8.5)
+    libraries:
+      - Arduino_JSON (0.1.0)

test/testdata/sketch_with_profile/sketch_with_profile.ino

+#include <Arduino_JSON.h>
+
+void setup() {}
+void loop() {}