Add test_ prefix to default test name in dune init project

bin/dune_init.ml

@@ -464,10 +464,11 @@ module Component = struct
           }
       in
       let test_target =
+        let test_name = "test_" ^ Dune_lang.Atom.to_string common.name in
         test
           { context = { context with dir = Path.relative dir "test" }
           ; options = ()
-          ; common
+          ; common = { common with name = Dune_lang.Atom.of_string test_name }
           }
       in
       let bin_target =
@@ -494,10 +495,11 @@ module Component = struct
           }
       in
       let test_target =
+        let test_name = "test_" ^ Dune_lang.Atom.to_string common.name in
         test
           { context = { context with dir = Path.relative dir "test" }
           ; options = ()
-          ; common
+          ; common = { common with name = Dune_lang.Atom.of_string test_name }
           }
       in
       lib_target @ test_target

doc/changes/9257.md

@@ -0,0 +1,2 @@
+- Add `test_` prefix to default test name in `dune init project` (#9257,
+  fixes #9131, @9sako6)

doc/quick-start.rst

@@ -50,7 +50,7 @@ This creates a project directory that includes the following contents:
     ├── dune-project
     ├── test
     │   ├── dune
-    │   └── project_name.ml
+    │   └── test_project_name.ml
     ├── lib
     │   └── dune
     ├── bin
@@ -93,7 +93,7 @@ which you can dive deeper into Dune's capabilities:
   authors and maintainers. Open this in your editor to fill in the
   placeholder values. See :ref:`dune-project` for details.
 * The ``test`` directory contains a skeleton for your project's tests. Add to
-  the tests by editing ``test/project_name.ml``. See :ref:`writing-tests` for
+  the tests by editing ``test/test_project_name.ml``. See :ref:`writing-tests` for
   details on testing.
 * The ``lib`` directory will hold the library you write to provide your executable's core
   functionality. Add modules to your library by creating new
@@ -133,7 +133,7 @@ This creates a project directory that includes the following contents:
     │   └── dune
     ├── test
     │   ├── dune
-    │   └── project_name.ml
+    │   └── test_project_name.ml
     └── project_name.opam
 
 Now, enter your project's directory:

test/blackbox-tests/test-cases/dune-init.t/run.t

@@ -292,37 +292,37 @@ Initializing executable projects
 
 We can init a new executable project:
 
-  $ dune init proj test_exec_proj
-  Entering directory 'test_exec_proj'
-  Success: initialized project component named test_exec_proj
-  Leaving directory 'test_exec_proj'
+  $ dune init proj new_exec_proj
+  Entering directory 'new_exec_proj'
+  Success: initialized project component named new_exec_proj
+  Leaving directory 'new_exec_proj'
 
 The generated project contains all expected sub-components:
 
-  $ ls test_exec_proj/**
-  test_exec_proj/dune-project
-  test_exec_proj/test_exec_proj.opam
+  $ ls new_exec_proj/**
+  new_exec_proj/dune-project
+  new_exec_proj/new_exec_proj.opam
 
-  test_exec_proj/_build:
+  new_exec_proj/_build:
   log
 
-  test_exec_proj/bin:
+  new_exec_proj/bin:
   dune
   main.ml
 
-  test_exec_proj/lib:
+  new_exec_proj/lib:
   dune
 
-  test_exec_proj/test:
+  new_exec_proj/test:
   dune
-  test_exec_proj.ml
+  test_new_exec_proj.ml
 
 In particular, the dune-project file has the expected content:
 
-  $ cat test_exec_proj/dune-project | sed 's/dune [0-9].[0-9]*/dune $version/g'
+  $ cat new_exec_proj/dune-project | sed 's/dune [0-9].[0-9]*/dune $version/g'
   (lang dune $version)
 
-  (name test_exec_proj)
+  (name new_exec_proj)
 
   (generate_opam_files true)
 
@@ -338,7 +338,7 @@ In particular, the dune-project file has the expected content:
   (documentation https://url/to/documentation)
 
   (package
-   (name test_exec_proj)
+   (name new_exec_proj)
    (synopsis "A short synopsis")
    (description "A longer description")
    (depends ocaml dune)
@@ -349,13 +349,13 @@ In particular, the dune-project file has the expected content:
 
 We can build the project:
 
-  $ dune build --root test_exec_proj
-  Entering directory 'test_exec_proj'
-  Leaving directory 'test_exec_proj'
+  $ dune build --root new_exec_proj
+  Entering directory 'new_exec_proj'
+  Leaving directory 'new_exec_proj'
 
 And the opam file will be generated as expected
 
-  $ cat test_exec_proj/test_exec_proj.opam | sed 's/"dune"/$dune/'
+  $ cat new_exec_proj/new_exec_proj.opam | sed 's/"dune"/$dune/'
   # This file is generated by dune, edit dune-project instead
   opam-version: "2.0"
   synopsis: "A short synopsis"
@@ -390,49 +390,49 @@ And the opam file will be generated as expected
 
 We can build and run the resulting executable:
 
-  $ dune exec --root test_exec_proj ./bin/main.exe
-  Entering directory 'test_exec_proj'
-  Leaving directory 'test_exec_proj'
+  $ dune exec --root new_exec_proj ./bin/main.exe
+  Entering directory 'new_exec_proj'
+  Leaving directory 'new_exec_proj'
   Hello, World!
 
 We can build and run the project's tests:
 
-  $ dune exec --root test_exec_proj ./test/test_exec_proj.exe
-  Entering directory 'test_exec_proj'
-  Leaving directory 'test_exec_proj'
+  $ dune exec --root new_exec_proj ./test/test_new_exec_proj.exe
+  Entering directory 'new_exec_proj'
+  Leaving directory 'new_exec_proj'
 
 Initializing library projects
 ================================
 
 We can init a new library project:
 
-  $ dune init proj test_lib_proj --kind lib
-  Entering directory 'test_lib_proj'
-  Success: initialized project component named test_lib_proj
-  Leaving directory 'test_lib_proj'
+  $ dune init proj new_lib_proj --kind lib
+  Entering directory 'new_lib_proj'
+  Success: initialized project component named new_lib_proj
+  Leaving directory 'new_lib_proj'
 
 The generated project contains all expected sub-components:
 
-  $ ls test_lib_proj/**
-  test_lib_proj/dune-project
-  test_lib_proj/test_lib_proj.opam
+  $ ls new_lib_proj/**
+  new_lib_proj/dune-project
+  new_lib_proj/new_lib_proj.opam
 
-  test_lib_proj/_build:
+  new_lib_proj/_build:
   log
 
-  test_lib_proj/lib:
+  new_lib_proj/lib:
   dune
 
-  test_lib_proj/test:
+  new_lib_proj/test:
   dune
-  test_lib_proj.ml
+  test_new_lib_proj.ml
 
 In particular, the dune-project file has the expected content:
 
-  $ cat test_lib_proj/dune-project | sed 's/dune [0-9].[0-9]*/dune $version/g'
+  $ cat new_lib_proj/dune-project | sed 's/dune [0-9].[0-9]*/dune $version/g'
   (lang dune $version)
 
-  (name test_lib_proj)
+  (name new_lib_proj)
 
   (generate_opam_files true)
 
@@ -448,7 +448,7 @@ In particular, the dune-project file has the expected content:
   (documentation https://url/to/documentation)
 
   (package
-   (name test_lib_proj)
+   (name new_lib_proj)
    (synopsis "A short synopsis")
    (description "A longer description")
    (depends ocaml dune)
@@ -459,13 +459,13 @@ In particular, the dune-project file has the expected content:
 
 We can build and install the project:
 
-  $ dune build --root test_lib_proj @install
-  Entering directory 'test_lib_proj'
-  Leaving directory 'test_lib_proj'
+  $ dune build --root new_lib_proj @install
+  Entering directory 'new_lib_proj'
+  Leaving directory 'new_lib_proj'
 
 And the opam file will be generated as expected
 
-  $ cat test_lib_proj/test_lib_proj.opam
+  $ cat new_lib_proj/new_lib_proj.opam
   # This file is generated by dune, edit dune-project instead
   opam-version: "2.0"
   synopsis: "A short synopsis"
@@ -500,45 +500,45 @@ And the opam file will be generated as expected
 
 And we we can run the tests:
 
-  $ dune runtest --root test_lib_proj --display short
-  Entering directory 'test_lib_proj'
-        ocamlc test/.test_lib_proj.eobjs/byte/dune__exe__Test_lib_proj.{cmi,cmti}
-      ocamlopt test/.test_lib_proj.eobjs/native/dune__exe__Test_lib_proj.{cmx,o}
-      ocamlopt test/test_lib_proj.exe
-  test_lib_proj alias test/runtest
-  Leaving directory 'test_lib_proj'
+  $ dune runtest --root new_lib_proj --display short
+  Entering directory 'new_lib_proj'
+        ocamlc test/.test_new_lib_proj.eobjs/byte/dune__exe__Test_new_lib_proj.{cmi,cmti}
+      ocamlopt test/.test_new_lib_proj.eobjs/native/dune__exe__Test_new_lib_proj.{cmx,o}
+      ocamlopt test/test_new_lib_proj.exe
+  test_new_lib_proj alias test/runtest
+  Leaving directory 'new_lib_proj'
 
 Initializing projects using Esy
 ===============================
 
 We can init a project using Esy:
 
-  $ dune init proj test_esy_proj --pkg esy
-  Entering directory 'test_esy_proj'
-  Success: initialized project component named test_esy_proj
-  Leaving directory 'test_esy_proj'
+  $ dune init proj new_esy_proj --pkg esy
+  Entering directory 'new_esy_proj'
+  Success: initialized project component named new_esy_proj
+  Leaving directory 'new_esy_proj'
 
 The esy project contains all expected sub-components:
 
-  $ ls test_esy_proj/**
-  test_esy_proj/dune-project
-  test_esy_proj/package.json
+  $ ls new_esy_proj/**
+  new_esy_proj/dune-project
+  new_esy_proj/package.json
 
-  test_esy_proj/_build:
+  new_esy_proj/_build:
   log
 
-  test_esy_proj/bin:
+  new_esy_proj/bin:
   dune
   main.ml
 
-  test_esy_proj/lib:
+  new_esy_proj/lib:
   dune
 
-  test_esy_proj/test:
+  new_esy_proj/test:
   dune
-  test_esy_proj.ml
+  test_new_esy_proj.ml
 
 And the dune-project file does NOT specify generation of an opam file:
 
-  $ cat test_esy_proj/dune-project | grep "generate_opam_files"
+  $ cat new_esy_proj/dune-project | grep "generate_opam_files"
   (generate_opam_files false)