Even better error messages

Author: cmaglie

Diff for: arduino/sketch/sketch.go

@@ -64,6 +64,11 @@ func New(path *paths.Path) (*Sketch, error) {
 	}
 
 	path = path.Canonical()
+	if exist, err := path.ExistCheck(); err != nil {
+		return nil, fmt.Errorf("%s: %s", tr("sketch path is not valid"), err)
+	} else if !exist {
+		return nil, fmt.Errorf("%s: %s", tr("no such file or directory"), path)
+	}
 	if _, validIno := globals.MainFileValidExtensions[path.Ext()]; validIno && !path.IsDir() {
 		path = path.Parent()
 	}

Diff for: arduino/sketch/sketch_test.go

@@ -108,7 +108,7 @@ func TestNewSketchWrongMain(t *testing.T) {
 	sketch, err = New(mainFilePath)
 	require.Nil(t, sketch)
 	require.Error(t, err)
-	expectedError = fmt.Sprintf("main file missing from sketch: %s", expectedMainFile)
+	expectedError = fmt.Sprintf("no such file or directory: %s", expectedMainFile)
 	require.Contains(t, err.Error(), expectedError)
 }
 
@@ -143,7 +143,7 @@ func TestNewSketchCasingWrong(t *testing.T) {
 		_, ok := skerr.(*InvalidSketchFolderNameError)
 		assert.False(t, ok)
 		sketchPath, _ = sketchPath.Abs()
-		expectedError := fmt.Sprintf("main file missing from sketch: %s", sketchPath.Join(sketchPath.Base()+".ino"))
+		expectedError := fmt.Sprintf("no such file or directory: %s", sketchPath)
 		require.EqualError(t, skerr, expectedError)
 	}
 }

Diff for: test/test_compile_part_1.py

@@ -47,18 +47,30 @@ def test_compile_error_message(run_command, working_dir):
     # Run a batch of bogus compile in a temp dir to check the error messages
     with tempfile.TemporaryDirectory() as tmp_dir:
         tmp = Path(tmp_dir)
-        res = run_command(["compile", "-b", "arduino:avr:uno", tmp / "ABCDEF"])
+        abcdef = tmp / "ABCDEF"
+        res = run_command(["compile", "-b", "arduino:avr:uno", abcdef])
         assert res.failed
-        assert "missing" in res.stderr
-        assert "ABCDEF" in res.stderr
-        res = run_command(["compile", "-b", "arduino:avr:uno", tmp / "ABCDEF" / "ABCDEF.ino"])
+        assert "no such file or directory:" in res.stderr
+        res = run_command(["compile", "-b", "arduino:avr:uno", abcdef / "ABCDEF.ino"])
         assert res.failed
-        assert "missing" in res.stderr
-        assert "ABCDEF" in res.stderr
-        res = run_command(["compile", "-b", "arduino:avr:uno", tmp / "ABCDEF" / "QWERTY"])
+        assert "no such file or directory:" in res.stderr
+        res = run_command(["compile", "-b", "arduino:avr:uno", abcdef / "QWERTY"])
         assert res.failed
-        assert "missing" in res.stderr
-        assert "QWERTY" in res.stderr
+        assert "no such file or directory:" in res.stderr
+
+        abcdef.mkdir()
+        res = run_command(["compile", "-b", "arduino:avr:uno", abcdef])
+        assert res.failed
+        assert "main file missing from sketch:" in res.stderr
+        res = run_command(["compile", "-b", "arduino:avr:uno", abcdef / "ABCDEF.ino"])
+        assert res.failed
+        assert "no such file or directory:" in res.stderr
+
+        qwertyIno = abcdef / "QWERTY.ino"
+        qwertyIno.touch()
+        res = run_command(["compile", "-b", "arduino:avr:uno", qwertyIno])
+        assert res.failed
+        assert "main file missing from sketch:" in res.stderr
 
 
 def test_compile_with_simple_sketch(run_command, data_dir, working_dir):