segmenter_test; add some test on first_clone setting

link to #2041

browser/test/QUnit/testFiles/segmenter_test.js

@@ -12,6 +12,7 @@ QUnit.test("segmenter", function(assert) {
     
     var segment = new Segment("segment", m);
     segment.init()
+    assert.equal(segment.first_clone, 0, "segment.first_clone is set to 0 at init")
     
     //select test
     m.select(0)
@@ -21,6 +22,7 @@ QUnit.test("segmenter", function(assert) {
     m.select(1)
     var div1 = document.getElementById("f1");
     assert.notEqual(div1.innerHTML.indexOf("test2"), -1, "select : Ok")
+    assert.equal(segment.first_clone, 0, "segment.first_clone still set to 0 if clones 0 and 1 are selected")
     
     m.select(2)
     var div2 = document.getElementById("f2");
@@ -30,6 +32,7 @@ QUnit.test("segmenter", function(assert) {
     assert.equal(document.getElementById("f0"), null, "unselect : Ok")
     assert.equal(document.getElementById("f1"), null, "unselect : Ok")
     assert.equal(document.getElementById("f2"), null, "unselect : Ok")
+    assert.equal(segment.first_clone, 0, "segment.first_clone is set to 0 when no clones are selected")
 
     m.select(0);
     m.select(2);
@@ -82,6 +85,11 @@ QUnit.test("segmenter", function(assert) {
     m.select(2)
     m.changeTime(3)
     assert.equal(document.getElementsByClassName("stats_content")[0].innerHTML, "1 clone, 3 reads ", "stats (1 clone with few reads) : Ok")
+
+    m.unselectAll()
+    m.select(2)
+    m.select(0)
+    assert.equal(segment.first_clone, 2, "segment.first_clone is set to 2, even if bigger clone is selected")
 });
 
 QUnit.test("sequence", function(assert) {