1 files changed, 90 insertions, 0 deletions
diff --git a/test/js/tests.js b/test/js/tests.js
new file mode 100644
index 00000000..d298cebe
--- /dev/null
+++ b/test/js/tests.js
@@ -0,0 +1,90 @@
+// To make the code more testable, we monkeypatch some of it.
+$.extend(coverage, {
+    line_elt: function(n) {
+        return $(coverage.fixture + " .t" + n);
+    },
+    num_elt: function(n) {
+        return $(coverage.fixture + " .n" + n);
+    },
+    scroll_to_selection: function() {}
+});
+
+// Test helpers
+
+function selection_is(sel) {
+    equals(coverage.sel_begin, sel[0]);
+    equals(coverage.sel_end, sel[1]);
+}
+
+// Tests
+
+$.each([
+    ['rrwwrr', [1,3], [5,7]], 
+    ['rb', [1,2], [2,3]],
+    ['wrrwrrw', [2,4], [5,7]],
+    ['rrrbbb', [1,4], [4,7]]
+], function(i, params) {
+
+    var id = params[0];
+    var fixture = "#"+id;
+    var c1 = params[1];
+    var c2 = params[2];
+
+    function setup() {
+        coverage.fixture = fixture;
+    };
+
+    test("first chunk on line 1 "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        selection_is(c1);
+    });
+
+    test("move to next chunk "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        coverage.to_next_chunk();
+        selection_is(c2);
+    });
+
+    test("move to first chunk "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        coverage.to_next_chunk();
+        coverage.to_first_chunk();
+        selection_is(c1);
+    });
+
+    test("move to previous chunk "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        coverage.to_next_chunk();
+        coverage.to_prev_chunk();
+        selection_is(c1);
+    });
+
+    test("next doesn't move after last chunk "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        coverage.to_next_chunk();
+        coverage.to_next_chunk();
+        selection_is(c2);
+    });
+
+    test("prev doesn't move before first chunk "+id, function() {
+        setup();
+        coverage.to_first_chunk();
+        coverage.to_next_chunk();
+        coverage.to_prev_chunk();
+        coverage.to_prev_chunk();
+        selection_is(c1);
+    });
+
+});
+
+test("jump from a line selected", function() {
+    coverage.fixture = "#rrwwrr";
+    coverage.set_sel(3, 4);
+    coverage.to_next_chunk();
+    selection_is([5,7]);
+});