def test_diff_with_render_false_renders_nothing(self):
element = parser.Diff(
name="example",
content=dedent("""
--- old
+++ new
@@ -1,2 +1,2 @@
-x = 1
+x = 2
print(x)
"""),
render=False,
)
state = {
"example": compiler.Code(
language="python",
content="x = 1\nprint(x)\n",
pending_lines=(),
),
}
new_state, new_element = _execute(state, element)
assert_that(new_element, is_empty_element)
assert_that(new_state["example"], has_attrs(pending_lines=is_sequence("x = 2")))
def test_diff_updates_code_using_content_as_patch(self):
element = parser.Diff(
name="example",
content=dedent("""
--- old
+++ new
@@ -1,2 +1,2 @@
-x = 1
+x = 2
print(x)
"""),
render=False,
)
state = {
"example": _create_code(
language="python",
content="x = 1\nprint(x)\n",
),
}
new_state, new_element = _execute(state, element)
assert_that(new_state, is_mapping({
"example": is_code(
language="python",
content="x = 2\nprint(x)\n",
),
}))
def test_invalid_diff_raises_error(self):
element = parser.Diff(
name="example",
content=dedent("""
--- old
+++ new
@@ -1,2 +1,2 @@
-x = 3
+x = 2
print(x)
"""),
render=False,
)
state = {
"example": _create_code(
language="python",
content="x = 1\nprint(x)\n",
pending_lines=(),
),
}
error = pytest.raises(ValueError, lambda: _execute(state, element, line_number=42))
assert_that(str(error.value), equal_to("cannot apply diff on line number 42, invalid patch"))
def test_diff_with_render_true_renders_content(self):
# TODO: handle rendering when last_render is out of date
content = dedent("""
--- old
+++ new
@@ -1,2 +1,2 @@
-x = 1
+x = 2
print(x)
""")
element = parser.Diff(
name="example",
content=content,
render=True,
)
state = {
"example": compiler.Code(
language="python",
content="x = 1\nprint(x)\n",
pending_lines=(),
),
}
new_state, new_element = _execute(state, element)
assert_that(new_element, is_literal_block(content=content))
assert_that(new_state["example"], has_attrs(pending_lines=is_sequence()))
def test_converting_from_diff_to_replace_generates_replace_block(self):
start = parser.Start(
name="example",
language="python",
render=True,
content=dedent("""
x = 1
print(x)
"""),
)
diff = parser.Diff(
name="example",
render=False,
content=dedent("""
--- old
+++ new
@@ -1,2 +1,2 @@
-x = 1
+x = 2
print(x)
"""),
)
output = compiler.convert_block(
source=(
(1, start),
(2, diff),
),
line_number=2,
block_type="replace",
)
assert_that(output, is_sequence(
is_start(),
is_replace(
name="example",
render=False,
content=dedent("""
x = 2
print(x)
""")
),
))