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jj/cli/tests/test_diffedit_command.rs
jyn d66fcf2ca0 compile integration tests as a single binary 
this greatly speeds up the time to run all tests, at the cost of slightly larger recompile times for individual tests.

this unfortunately adds the requirement that all tests are listed in `runner.rs` for the crate.
to avoid forgetting, i've added a new test that ensures the directory is in sync with the file.

 ## benchmarks

before this change, recompiling all tests took 32-50 seconds and running a single test took 3.5 seconds:

```
; hyperfine 'touch lib/src/lib.rs && cargo t --test test_working_copy'
  Time (mean ± σ):      3.543 s ±  0.168 s    [User: 2.597 s, System: 1.262 s]
  Range (min … max):    3.400 s …  3.847 s    10 runs
```

after this change, recompiling all tests take 4 seconds:
```
;  hyperfine 'touch lib/src/lib.rs ; cargo t --test runner --no-run'
  Time (mean ± σ):      4.055 s ±  0.123 s    [User: 3.591 s, System: 1.593 s]
  Range (min … max):    3.804 s …  4.159 s    10 runs
```
and running a single test takes about the same:
```
; hyperfine 'touch lib/src/lib.rs && cargo t --test runner -- test_working_copy'
  Time (mean ± σ):      4.129 s ±  0.120 s    [User: 3.636 s, System: 1.593 s]
  Range (min … max):    3.933 s …  4.346 s    10 runs
```

about 1.4 seconds of that is the time for the runner, of which .4 is the time for the linker. so
there may be room for further improving the times.
2024-02-06 18:19:41 -08:00

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// Copyright 2022 The Jujutsu Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::common::{escaped_fake_diff_editor_path, TestEnvironment};
#[test]
fn test_diffedit() {
let mut test_env = TestEnvironment::default();
test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
std::fs::write(repo_path.join("file1"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::write(repo_path.join("file2"), "a\n").unwrap();
std::fs::write(repo_path.join("file3"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::remove_file(repo_path.join("file1")).unwrap();
std::fs::write(repo_path.join("file2"), "b\n").unwrap();
let edit_script = test_env.set_up_fake_diff_editor();
// Test the setup; nothing happens if we make no changes
std::fs::write(
&edit_script,
"files-before file1 file2\0files-after JJ-INSTRUCTIONS file2",
)
.unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
"###);
// Nothing happens if the diff-editor exits with an error
std::fs::write(&edit_script, "rm file2\0fail").unwrap();
insta::assert_snapshot!(&test_env.jj_cmd_failure(&repo_path, &["diffedit"]), @r###"
Error: Failed to edit diff
Caused by: Tool exited with a non-zero code (run with --verbose to see the exact invocation). Exit code: 1.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
"###);
// Can edit changes to individual files
std::fs::write(&edit_script, "reset file2").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created kkmpptxz 1930da4a (no description set)
Working copy now at: kkmpptxz 1930da4a (no description set)
Parent commit : rlvkpnrz 613028a4 (no description set)
Added 0 files, modified 1 files, removed 0 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
"###);
// Changes to a commit are propagated to descendants
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(&edit_script, "write file3\nmodified\n").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "-r", "@-"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created rlvkpnrz c03ae967 (no description set)
Rebased 1 descendant commits
Working copy now at: kkmpptxz 2a4dc204 (no description set)
Parent commit : rlvkpnrz c03ae967 (no description set)
Added 0 files, modified 1 files, removed 0 files
"###);
let contents = String::from_utf8(std::fs::read(repo_path.join("file3")).unwrap()).unwrap();
insta::assert_snapshot!(contents, @r###"
modified
"###);
// Test diffedit --from @--
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(
&edit_script,
"files-before file1\0files-after JJ-INSTRUCTIONS file2 file3\0reset file2",
)
.unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "--from", "@--"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created kkmpptxz 15f2c966 (no description set)
Working copy now at: kkmpptxz 15f2c966 (no description set)
Parent commit : rlvkpnrz 613028a4 (no description set)
Added 0 files, modified 0 files, removed 1 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
D file2
"###);
}
#[test]
fn test_diffedit_new_file() {
let mut test_env = TestEnvironment::default();
test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
std::fs::write(repo_path.join("file1"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::remove_file(repo_path.join("file1")).unwrap();
std::fs::write(repo_path.join("file2"), "b\n").unwrap();
let edit_script = test_env.set_up_fake_diff_editor();
// Test the setup; nothing happens if we make no changes
std::fs::write(
&edit_script,
"files-before file1\0files-after JJ-INSTRUCTIONS file2",
)
.unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
A file2
"###);
// Creating `file1` on the right side is noticed by `jj diffedit`
std::fs::write(&edit_script, "write file1\nmodified\n").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created rlvkpnrz 7b849299 (no description set)
Working copy now at: rlvkpnrz 7b849299 (no description set)
Parent commit : qpvuntsm 414e1614 (no description set)
Added 1 files, modified 0 files, removed 0 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
M file1
A file2
"###);
// Creating a file that wasn't on either side is ignored by diffedit.
// TODO(ilyagr) We should decide whether we like this behavior.
//
// On one hand, it is unexpected and potentially a minor BUG. On the other
// hand, this prevents `jj` from loading any backup files the merge tool
// generates.
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(&edit_script, "write new_file\nnew file\n").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
A file2
"###);
}
#[test]
fn test_diffedit_3pane() {
let mut test_env = TestEnvironment::default();
test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
std::fs::write(repo_path.join("file1"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::write(repo_path.join("file2"), "a\n").unwrap();
std::fs::write(repo_path.join("file3"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::remove_file(repo_path.join("file1")).unwrap();
std::fs::write(repo_path.join("file2"), "b\n").unwrap();
// 2 configs for a 3-pane setup. In the first, "$right" is passed to what the
// fake diff editor considers the "after" state.
let config_with_right_as_after = format!(
r#"ui.diff-editor=["{}", "$left", "$right", "--ignore=$output"]"#,
escaped_fake_diff_editor_path()
);
let config_with_output_as_after = format!(
r#"ui.diff-editor=["{}", "$left", "$output", "--ignore=$right"]"#,
escaped_fake_diff_editor_path()
);
let edit_script = test_env.env_root().join("diff_edit_script");
std::fs::write(&edit_script, "").unwrap();
test_env.add_env_var("DIFF_EDIT_SCRIPT", edit_script.to_str().unwrap());
// Nothing happens if we make no changes
std::fs::write(
&edit_script,
"files-before file1 file2\0files-after JJ-INSTRUCTIONS file2",
)
.unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(
&repo_path,
&["diffedit", "--config-toml", &config_with_output_as_after],
);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
"###);
// Nothing happens if we make no changes, `config_with_right_as_after` version
let (stdout, stderr) = test_env.jj_cmd_ok(
&repo_path,
&["diffedit", "--config-toml", &config_with_right_as_after],
);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
"###);
// Can edit changes to individual files
std::fs::write(&edit_script, "reset file2").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(
&repo_path,
&["diffedit", "--config-toml", &config_with_output_as_after],
);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created kkmpptxz 1930da4a (no description set)
Working copy now at: kkmpptxz 1930da4a (no description set)
Parent commit : rlvkpnrz 613028a4 (no description set)
Added 0 files, modified 1 files, removed 0 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
"###);
// Can write something new to `file1`
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(&edit_script, "write file1\nnew content").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(
&repo_path,
&["diffedit", "--config-toml", &config_with_output_as_after],
);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created kkmpptxz ff2907b6 (no description set)
Working copy now at: kkmpptxz ff2907b6 (no description set)
Parent commit : rlvkpnrz 613028a4 (no description set)
Added 1 files, modified 0 files, removed 0 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
M file1
M file2
"###);
// But nothing happens if we modify the right side
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(&edit_script, "write file1\nnew content").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(
&repo_path,
&["diffedit", "--config-toml", &config_with_right_as_after],
);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
"###);
// TODO: test with edit_script of "reset file2". This fails on right side
// since the file is readonly.
}
#[test]
fn test_diffedit_merge() {
let mut test_env = TestEnvironment::default();
test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
std::fs::write(repo_path.join("file1"), "a\n").unwrap();
std::fs::write(repo_path.join("file2"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
test_env.jj_cmd_ok(&repo_path, &["branch", "create", "b"]);
std::fs::write(repo_path.join("file1"), "b\n").unwrap();
std::fs::write(repo_path.join("file2"), "b\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["co", "@-"]);
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::write(repo_path.join("file1"), "c\n").unwrap();
std::fs::write(repo_path.join("file2"), "c\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new", "@", "b", "-m", "merge"]);
// Resolve the conflict in file1, but leave the conflict in file2
std::fs::write(repo_path.join("file1"), "d\n").unwrap();
std::fs::write(repo_path.join("file3"), "d\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
// Test the setup
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-r", "@-", "-s"]);
insta::assert_snapshot!(stdout, @r###"
M file1
A file3
"###);
let edit_script = test_env.set_up_fake_diff_editor();
// Remove file1. The conflict remains in the working copy on top of the merge.
std::fs::write(
edit_script,
"files-before file1\0files-after JJ-INSTRUCTIONS file1 file3\0rm file1",
)
.unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "-r", "@-"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created royxmykx 2b5202ae (conflict) merge
Rebased 1 descendant commits
Working copy now at: yqosqzyt 23b1fe1b (conflict) (empty) (no description set)
Parent commit : royxmykx 2b5202ae (conflict) merge
Added 0 files, modified 0 files, removed 1 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s", "-r", "@-"]);
insta::assert_snapshot!(stdout, @r###"
D file1
A file3
"###);
assert!(!repo_path.join("file1").exists());
let stdout = test_env.jj_cmd_success(&repo_path, &["print", "file2"]);
insta::assert_snapshot!(stdout, @r###"
<<<<<<<
%%%%%%%
-a
+c
+++++++
b
>>>>>>>
"###);
}
#[test]
fn test_diffedit_old_restore_interactive_tests() {
let mut test_env = TestEnvironment::default();
test_env.jj_cmd_ok(test_env.env_root(), &["init", "repo", "--git"]);
let repo_path = test_env.env_root().join("repo");
std::fs::write(repo_path.join("file1"), "a\n").unwrap();
std::fs::write(repo_path.join("file2"), "a\n").unwrap();
test_env.jj_cmd_ok(&repo_path, &["new"]);
std::fs::remove_file(repo_path.join("file1")).unwrap();
std::fs::write(repo_path.join("file2"), "b\n").unwrap();
std::fs::write(repo_path.join("file3"), "b\n").unwrap();
let edit_script = test_env.set_up_fake_diff_editor();
// Nothing happens if we make no changes
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "--from", "@-"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Nothing changed.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
A file3
"###);
// Nothing happens if the diff-editor exits with an error
std::fs::write(&edit_script, "rm file2\0fail").unwrap();
insta::assert_snapshot!(&test_env.jj_cmd_failure(&repo_path, &["diffedit", "--from", "@-"]), @r###"
Error: Failed to edit diff
Caused by: Tool exited with a non-zero code (run with --verbose to see the exact invocation). Exit code: 1.
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
M file2
A file3
"###);
// Can restore changes to individual files
std::fs::write(&edit_script, "reset file2\0reset file3").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "--from", "@-"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created rlvkpnrz abdbf627 (no description set)
Working copy now at: rlvkpnrz abdbf627 (no description set)
Parent commit : qpvuntsm 2375fa16 (no description set)
Added 0 files, modified 1 files, removed 1 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "-s"]);
insta::assert_snapshot!(stdout, @r###"
D file1
"###);
// Can make unrelated edits
test_env.jj_cmd_ok(&repo_path, &["undo"]);
std::fs::write(&edit_script, "write file3\nunrelated\n").unwrap();
let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["diffedit", "--from", "@-"]);
insta::assert_snapshot!(stdout, @"");
insta::assert_snapshot!(stderr, @r###"
Created rlvkpnrz e31f7f33 (no description set)
Working copy now at: rlvkpnrz e31f7f33 (no description set)
Parent commit : qpvuntsm 2375fa16 (no description set)
Added 0 files, modified 1 files, removed 0 files
"###);
let stdout = test_env.jj_cmd_success(&repo_path, &["diff", "--git"]);
insta::assert_snapshot!(stdout, @r###"
diff --git a/file1 b/file1
deleted file mode 100644
index 7898192261..0000000000
--- a/file1
+++ /dev/null
@@ -1,1 +1,0 @@
-a
diff --git a/file2 b/file2
index 7898192261...6178079822 100644
--- a/file2
+++ b/file2
@@ -1,1 +1,1 @@
-a
+b
diff --git a/file3 b/file3
new file mode 100644
index 0000000000..c21c9352f7
--- /dev/null
+++ b/file3
@@ -1,0 +1,1 @@
+unrelated
"###);
}
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