Add some tests

Makefile

@@ -8,3 +8,9 @@ install: syn-files build
 syn-files:
 	mkdir -p ~/.micro/syntax
 	cp -r runtime/* ~/.micro
+
+test:
+	go test ./src
+
+clean:
+	rm -f micro

src/rope_test.go

@@ -0,0 +1,46 @@
+package main
+
+import "testing"
+
+func TestInsert(t *testing.T) {
+	var tests = []struct {
+		origStr   string
+		insertStr string
+		insertPos int
+		want      string
+	}{
+		{"foo", " bar", 3, "foo bar"},
+		{"üñîç", "ø∂é", 4, "üñîçø∂é"},
+		{"test", "3", 2, "te3st"},
+		{"", "test", 0, "test"},
+	}
+	for _, test := range tests {
+		r := NewRope(test.origStr)
+		r.Insert(test.insertPos, test.insertStr)
+		got := r.String()
+		if got != test.want {
+			t.Errorf("Insert(%d, %s) = %s", test.insertPos, test.insertStr, got)
+		}
+	}
+}
+
+func TestRemove(t *testing.T) {
+	var tests = []struct {
+		inputStr    string
+		removeStart int
+		removeEnd   int
+		want        string
+	}{
+		{"foo bar", 3, 7, "foo"},
+		{"üñîçø∂é", 0, 3, "çø∂é"},
+		{"test", 0, 4, ""},
+	}
+	for _, test := range tests {
+		r := NewRope(test.inputStr)
+		r.Remove(test.removeStart, test.removeEnd)
+		got := r.String()
+		if got != test.want {
+			t.Errorf("Remove(%d, %d) = %s", test.removeStart, test.removeEnd, got)
+		}
+	}
+}

src/stack_test.go

@@ -0,0 +1,39 @@
+package main
+
+import "testing"
+
+func TestStack(t *testing.T) {
+	stack := new(Stack)
+
+	if stack.Len() != 0 {
+		t.Errorf("Len failed")
+	}
+	stack.Push(5)
+	stack.Push("test")
+	stack.Push(10)
+	if stack.Len() != 3 {
+		t.Errorf("Len failed")
+	}
+
+	var popped interface{}
+	popped = stack.Pop()
+	if popped != 10 {
+		t.Errorf("Pop failed")
+	}
+
+	popped = stack.Pop()
+	if popped != "test" {
+		t.Errorf("Pop failed")
+	}
+
+	stack.Push("test")
+	popped = stack.Pop()
+	if popped != "test" {
+		t.Errorf("Pop failed")
+	}
+	stack.Pop()
+	popped = stack.Pop()
+	if popped != nil {
+		t.Errorf("Pop failed")
+	}
+}

src/view.go

@@ -84,6 +84,10 @@ func NewViewWidthHeight(buf *Buffer, m *Messenger, w, h int) *View {
 		view: v,
 	}
 
+	// Set mouseReleased to true because we assume the mouse is not being pressed when
+	// the editor is opened
+	v.mouseReleased = true
+
 	return v
 }