Merge pull request #4142 from askerry/selenium_merge_cells

Migrate test for merge cells api to selenium

notebook/tests/selenium/test_merge_cells.py

@@ -0,0 +1,32 @@
+"""Tests the merge cell api."""
+
+def test_merge_cells(notebook):
+    # Add cells to notebook
+    a = "foo = 5"
+    b = "bar = 10"
+    c = "print(foo)"
+    d = "print(bar)"
+    notebook.edit_cell(index=0, content=a)
+    notebook.append(b, c, d)
+
+    # Before merging, there are 4 separate cells
+    assert notebook.get_cells_contents() == [a, b, c, d]
+
+    # Focus on the second cell and merge it with the cell above
+    notebook.focus_cell(1)
+    notebook.browser.execute_script("Jupyter.notebook.merge_cell_above();")
+    merged_a_b = "%s\n\n%s" % (a, b)
+    assert notebook.get_cells_contents() == [merged_a_b, c, d]
+
+    # Focus on the second cell and merge it with the cell below
+    notebook.focus_cell(1)
+    notebook.browser.execute_script("Jupyter.notebook.merge_cell_below();")
+    merged_c_d = "%s\n\n%s" % (c, d)
+    assert notebook.get_cells_contents() == [merged_a_b, merged_c_d]
+
+    # Merge everything down to a single cell
+    notebook.focus_cell(0)
+    notebook.browser.execute_script("Jupyter.notebook.merge_cell_below();")
+    merged_all = "%s\n\n%s" % (merged_a_b, merged_c_d)
+    assert notebook.get_cells_contents() == [merged_all]
+