Test include detection with subfolders

This verifies that:
 - Source files inside the src/ subfolder of a sketch are subject to
   include detection.
 - Header files included by the main sketch are subject to include
   detection.
 - Source files in other subfolders are *not* subject to include
   detection.

This commit adds four dummy libraries, "testlib1" to "testlib4" that only
contain an empty header file. These can be used to test whether an include
leads to the correct library being included, without running into other
unexpected issues when using real libraries (like one library including
another, or not all libraries being available for all boards, etc.).

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>

Author: matthijskooijman

src/arduino.cc/builder/test/includes_to_include_folders_test.go

@@ -37,6 +37,7 @@ import (
 	"path/filepath"
 	"sort"
 	"testing"
+	"fmt"
 )
 
 func TestIncludesToIncludeFolders(t *testing.T) {
@@ -298,3 +299,44 @@ func TestIncludesToIncludeFoldersDuplicateLibs2(t *testing.T) {
 	require.Equal(t, "USBHost", importedLibraries[0].Name)
 	require.Equal(t, Abs(t, filepath.Join("libraries", "USBHost", "src")), importedLibraries[0].SrcFolder)
 }
+
+func TestIncludesToIncludeFoldersSubfolders(t *testing.T) {
+	DownloadCoresAndToolsAndLibraries(t)
+
+	ctx := &types.Context{
+		HardwareFolders:         []string{filepath.Join("..", "hardware"), "hardware", "downloaded_hardware"},
+		ToolsFolders:            []string{"downloaded_tools"},
+		BuiltInLibrariesFolders: []string{"downloaded_libraries"},
+		OtherLibrariesFolders:   []string{"libraries"},
+		SketchLocation:          filepath.Join("sketch_with_subfolders", "sketch_with_subfolders.ino"),
+		FQBN:                    "arduino:avr:leonardo",
+		ArduinoAPIVersion:       "10600",
+		Verbose:                 true,
+	}
+
+	buildPath := SetupBuildPath(t, ctx)
+	defer os.RemoveAll(buildPath)
+
+	commands := []types.Command{
+
+		&builder.ContainerSetupHardwareToolsLibsSketchAndProps{},
+
+		&builder.ContainerMergeCopySketchFiles{},
+
+		&builder.ContainerFindIncludes{},
+	}
+
+	for _, command := range commands {
+		err := command.Run(ctx)
+		NoError(t, err)
+	}
+
+	importedLibraries := ctx.ImportedLibraries
+	sort.Sort(ByLibraryName(importedLibraries))
+	fmt.Println(importedLibraries)
+	require.Equal(t, 3, len(importedLibraries))
+	require.Equal(t, "testlib1", importedLibraries[0].Name)
+	require.Equal(t, "testlib2", importedLibraries[1].Name)
+	require.Equal(t, "testlib3", importedLibraries[2].Name)
+}
+

src/arduino.cc/builder/test/libraries/testlib1/testlib1.h

@@ -30,13 +30,14 @@
 package test
 
 import (
+	"path/filepath"
+	"sort"
+	"testing"
+
 	"arduino.cc/builder"
 	"arduino.cc/builder/constants"
 	"arduino.cc/builder/types"
 	"github.com/stretchr/testify/require"
-	"path/filepath"
-	"sort"
-	"testing"
 )
 
 func TestLoadLibrariesAVR(t *testing.T) {
@@ -68,7 +69,7 @@ func TestLoadLibrariesAVR(t *testing.T) {
 	require.Equal(t, Abs(t, filepath.Join("libraries")), librariesFolders[2])
 
 	libraries := ctx.Libraries
-	require.Equal(t, 20, len(libraries))
+	require.Equal(t, 24, len(libraries))
 
 	sort.Sort(ByLibraryName(libraries))
 
@@ -177,7 +178,7 @@ func TestLoadLibrariesSAM(t *testing.T) {
 	require.Equal(t, Abs(t, filepath.Join("libraries")), librariesFolders[2])
 
 	libraries := ctx.Libraries
-	require.Equal(t, 18, len(libraries))
+	require.Equal(t, 22, len(libraries))
 
 	sort.Sort(ByLibraryName(libraries))
 

src/arduino.cc/builder/test/libraries/testlib2/testlib2.h

@@ -1,3 +1,4 @@
+#include <testlib1.h>
 #include "subfolder/other.h"
 #include "src/subfolder/other.h"
 

src/arduino.cc/builder/test/libraries/testlib3/testlib3.h

@@ -1,4 +1,5 @@
 #include <Arduino.h> // Arduino 1.0
+#include <testlib2.h>
 
 #include "other.h"
 

src/arduino.cc/builder/test/libraries/testlib4/testlib4.h

@@ -1,5 +1,6 @@
 #ifndef other__h
 #define other__h
+#include <testlib3.h>
 
 class MyClass {
   public:
@@ -9,4 +10,4 @@ class MyClass {
   private:
     Stream *controllerStream;
 };
-#endif
+#endif

src/arduino.cc/builder/test/libraries_loader_test.go

@@ -1 +1,2 @@
+#include <testlib4.h>
 #error "Whattya looking at?"