[release/1.4.6] cmd, console: split off the console into a reusable package

(cherry picked from commit ffaf58f0a9)

internal/jsre/completion_test.go

@@ -0,0 +1,88 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package jsre
+
+import (
+	"os"
+	"reflect"
+	"testing"
+)
+
+func TestCompleteKeywords(t *testing.T) {
+	re := New("", os.Stdout)
+	re.Run(`
+		function theClass() {
+			this.foo = 3;
+			this.gazonk = {xyz: 4};
+		}
+		theClass.prototype.someMethod = function () {};
+  		var x = new theClass();
+  		var y = new theClass();
+		y.someMethod = function override() {};
+	`)
+
+	var tests = []struct {
+		input string
+		want  []string
+	}{
+		{
+			input: "x",
+			want:  []string{"x."},
+		},
+		{
+			input: "x.someMethod",
+			want:  []string{"x.someMethod("},
+		},
+		{
+			input: "x.",
+			want: []string{
+				"x.constructor",
+				"x.foo",
+				"x.gazonk",
+				"x.someMethod",
+			},
+		},
+		{
+			input: "y.",
+			want: []string{
+				"y.constructor",
+				"y.foo",
+				"y.gazonk",
+				"y.someMethod",
+			},
+		},
+		{
+			input: "x.gazonk.",
+			want: []string{
+				"x.gazonk.constructor",
+				"x.gazonk.hasOwnProperty",
+				"x.gazonk.isPrototypeOf",
+				"x.gazonk.propertyIsEnumerable",
+				"x.gazonk.toLocaleString",
+				"x.gazonk.toString",
+				"x.gazonk.valueOf",
+				"x.gazonk.xyz",
+			},
+		},
+	}
+	for _, test := range tests {
+		cs := re.CompleteKeywords(test.input)
+		if !reflect.DeepEqual(cs, test.want) {
+			t.Errorf("wrong completions for %q\ngot  %v\nwant %v", test.input, cs, test.want)
+		}
+	}
+}