tests: only build when needed

Build the tests lazily, i.e., not before `meson test`. This helps with
build-times.

6 files changed, 53 insertions, 6 deletions

diff --git a/guile/tests/meson.build b/guile/tests/meson.build
index 07b3790..05bb14e 100644
--- a/guile/tests/meson.build
+++ b/guile/tests/meson.build
@@ -1,4 +1,4 @@
-## Copyright (C) 2024 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -27,6 +27,7 @@ if get_option('b_sanitize') == 'none'
        executable('test-mu-guile',
                   'test-mu-guile.cc',
                   install: false,
+                  build_by_default: false,
                   cpp_args: [
                     '-DABS_SRCDIR="' + meson.current_source_dir() + '"',
                     '-DGUILE_LOAD_PATH="' + guile_load_path + '"',
diff --git a/lib/message/tests/meson.build b/lib/message/tests/meson.build
index 94d0de9..880a188 100644
--- a/lib/message/tests/meson.build
+++ b/lib/message/tests/meson.build
@@ -1,4 +1,4 @@
-## Copyright (C) 2022-2024 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2022-2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -22,6 +22,7 @@ test('test-contact',
      executable('test-contact',
                 '../mu-contact.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
@@ -29,6 +30,7 @@ test('test-document',
      executable('test-document',
                 '../mu-document.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
@@ -36,6 +38,7 @@ test('test-fields',
      executable('test-fields',
                 '../mu-fields.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
@@ -43,6 +46,7 @@ test('test-flags',
      executable('test-flags',
                 '../mu-flags.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
@@ -50,12 +54,14 @@ test('test-message',
      executable('test-message',
                 '../test-mu-message.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
 test('test-priority',
      executable('test-priority',
                 '../mu-priority.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gmime_dep, lib_mu_message_dep]))
 
@@ -63,6 +69,7 @@ test('test-message-file',
      executable('test-message-file',
                 '../mu-message-file.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_message_dep]))
 
@@ -70,5 +77,6 @@ test('test-message-part',
      executable('test-message-part',
                 '../mu-message-part.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_message_dep]))
diff --git a/lib/tests/meson.build b/lib/tests/meson.build
index 39b5b38..c5aee49 100644
--- a/lib/tests/meson.build
+++ b/lib/tests/meson.build
@@ -1,4 +1,4 @@
-## Copyright (C) 2021-2024 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2021-2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -18,7 +18,6 @@
 # tests
 #
 
-
 #
 # unit tests
 #
@@ -27,12 +26,15 @@ test('test-threads',
      executable('test-threads',
                 '../mu-query-threads.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
+
 test('test-contacts-cache',
      executable('test-contacts-cache',
                 '../mu-contacts-cache.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -40,6 +42,7 @@ test('test-config',
      executable('test-config',
                 '../mu-config.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -47,6 +50,7 @@ test('test-query-macros',
      executable('test-query-macros',
                 '../mu-query-macros.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [lib_mu_dep]))
 
@@ -54,6 +58,7 @@ test('test-query-processor',
      executable('test-query-processor',
                 '../mu-query-processor.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [lib_mu_dep]))
 
@@ -61,6 +66,7 @@ test('test-query-parser',
      executable('test-query-parser',
                 '../mu-query-parser.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [lib_mu_dep]))
 
@@ -68,6 +74,7 @@ test('test-query-xapianizer',
      executable('test-query-xapianizer',
                 '../mu-query-xapianizer.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [lib_mu_dep]))
 
@@ -76,6 +83,7 @@ test('test-indexer',
      executable('test-indexer',
                 '../mu-indexer.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, config_h_dep,
                                lib_mu_dep]))
@@ -84,6 +92,7 @@ test('test-scanner',
      executable('test-scanner',
                 '../mu-scanner.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, config_h_dep,
                                lib_mu_utils_dep]))
@@ -92,6 +101,7 @@ test('test-xapian-db',
      executable('test-xapian-db',
                 '../mu-xapian-db.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [lib_mu_dep, config_h_dep]))
 
@@ -99,27 +109,32 @@ test('test-maildir',
      executable('test-maildir',
                 'test-mu-maildir.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, lib_mu_dep]))
 test('test-msg',
      executable('test-msg',
                 'test-mu-msg.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, lib_mu_dep]))
 test('test-store',
      executable('test-store',
                 'test-mu-store.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, lib_mu_dep]))
 test('test-query',
      executable('test-query',
                 'test-query.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, gmime_dep, lib_mu_dep]))
 
 test('test-store-query',
      executable('test-store-query',
                 'test-mu-store-query.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, gmime_dep, lib_mu_dep]))
 #
 # benchmarks
diff --git a/lib/utils/tests/meson.build b/lib/utils/tests/meson.build
index 6fa3d17..2df2ad7 100644
--- a/lib/utils/tests/meson.build
+++ b/lib/utils/tests/meson.build
@@ -1,4 +1,4 @@
-## Copyright (C) 2021-2024 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2021-2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -25,54 +25,63 @@
 test('test-sexp',
      executable('test-sexp', '../mu-sexp.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep]))
 
 test('test-regex',
      executable('test-regex', '../mu-regex.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep]))
 
 test('test-command-handler',
      executable('test-command-handler', '../mu-command-handler.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep]))
 
 test('test-utils-file',
      executable('test-utils-file', '../mu-utils-file.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, gio_unix_dep,config_h_dep, lib_mu_utils_dep]))
 
 test('test-logger',
      executable('test-logger', '../mu-logger.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep,config_h_dep,thread_dep ]))
 
 test('test-option',
      executable('test-option', '../mu-option.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep ]))
 
 test('test-lang-detector',
      executable('test-lang-detector', '../mu-lang-detector.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [ config_h_dep, glib_dep, lib_mu_utils_dep ]))
 
 test('test-html-to-text',
      executable('test-html-to-text', '../mu-html-to-text.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep]))
 
 test('test-error',
      executable('test-error', '../mu-error.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_utils_dep]))
 
@@ -80,4 +89,5 @@ test('test-mu-utils',
      executable('test-mu-utils',
                 'test-utils.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, lib_mu_utils_dep]))
diff --git a/mu/tests/meson.build b/mu/tests/meson.build
index cc8a342..5476af7 100644
--- a/mu/tests/meson.build
+++ b/mu/tests/meson.build
@@ -1,4 +1,4 @@
-## Copyright (C) 2022-2024 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2022-2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -23,6 +23,7 @@ test('test-cmd-add',
      executable('test-cmd-add',
                 '../mu-cmd-add.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -30,6 +31,7 @@ test('test-cmd-cfind',
      executable('test-cmd-cfind',
                 '../mu-cmd-cfind.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -37,6 +39,7 @@ test('test-cmd-extract',
      executable('test-cmd-extract',
                 '../mu-cmd-extract.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -44,6 +47,7 @@ test('test-cmd-find',
      executable('test-cmd-find',
                 '../mu-cmd-find.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -51,6 +55,7 @@ test('test-cmd-index',
      executable('test-cmd-index',
                 '../mu-cmd-index.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -58,6 +63,7 @@ test('test-cmd-init',
      executable('test-cmd-init',
                 '../mu-cmd-init.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -65,6 +71,7 @@ test('test-cmd-mkdir',
      executable('test-cmd-mkdir',
                 '../mu-cmd-mkdir.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -72,6 +79,7 @@ test('test-cmd-move',
      executable('test-cmd-move',
                 '../mu-cmd-move.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -79,6 +87,7 @@ test('test-cmd-remove',
      executable('test-cmd-remove',
                 '../mu-cmd-remove.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -86,6 +95,7 @@ test('test-cmd-verify',
      executable('test-cmd-verify',
                 '../mu-cmd-verify.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -93,6 +103,7 @@ test('test-cmd-view',
      executable('test-cmd-view',
                 '../mu-cmd-view.cc',
                 install: false,
+                build_by_default: false,
                 cpp_args: ['-DBUILD_TESTS'],
                 dependencies: [glib_dep, lib_mu_dep]))
 
@@ -100,6 +111,7 @@ test('test-cmd-query',
      executable('test-cmd-query',
                 'test-mu-query.cc',
                 install: false,
+                build_by_default: false,
                 dependencies: [glib_dep, config_h_dep, lib_mu_dep]))
 
 gmime_test = executable(
diff --git a/scm/meson.build b/scm/meson.build
index d0a4b2a..f7ef0f7 100644
--- a/scm/meson.build
+++ b/scm/meson.build
@@ -67,6 +67,7 @@ if not get_option('tests').disabled()
        executable('test-scm',
                   'mu-scm.cc',
                   install: false,
+                  build_by_default: false,
                   dependencies: [mu_scm_dep],
                   cpp_args: [mu_scm_dir_arg, def_srcdir, '-DBUILD_TESTS']))
 endif