[gdk-pixbuf/issue-123: 7/7] tests: Conditionally build and run tests

[Emmanuele Bassi <ebassi src gnome org>]

commit 7f0b214ad921c0ad00ff4ef57b531a6f18f7ccc9
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Apr 2 12:46:28 2020 +0100

    tests: Conditionally build and run tests
    
    Some tests depend on build options—like the ability to load certain
    images. There's no point in compiling things that we know will fail,
    so might as well skip them.
    
    Fixes: #123

 tests/meson.build | 242 +++++++++++++++++++++++++++++++++---------------------
 1 file changed, 147 insertions(+), 95 deletions(-)
---
diff --git a/tests/meson.build b/tests/meson.build
index 80ed3e8b2..e111084c1 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,43 +1,58 @@
-# Resources; we cannot use gnome.compile_resources() here, because we need to
-# override the environment in order to use the utilities we just built instead
-# of the system ones
-resources_c = custom_target('resources.c',
-  input: 'resources.gresource.xml',
-  output: 'resources.c',
-  command: [
-    gen_resources,
-    '--pixdata=@0@'.format(gdk_pixbuf_pixdata.full_path()),
-    '--loaders=@0@'.format(loaders_cache.full_path()),
-    '--sourcedir=@0@'.format(meson.current_source_dir()),
-    '--source',
-    '@INPUT@',
-    '@OUTPUT@',
-  ],
-  depends: [
-    gdk_pixbuf_pixdata,
-    loaders_cache,
-  ],
-)
+# Resources contain PNG and BMP files, so we need these two loaders
+# enabled in order to build them
+if enabled_loaders.contains('png') and enabled_loaders.contains('bmp')
+  # Resources; we cannot use gnome.compile_resources() here, because we need to
+  # override the environment in order to use the utilities we just built instead
+  # of the system ones
+  resources_c = custom_target('resources.c',
+    input: 'resources.gresource.xml',
+    output: 'resources.c',
+    command: [
+      gen_resources,
+      '--pixdata=@0@'.format(gdk_pixbuf_pixdata.full_path()),
+      '--loaders=@0@'.format(loaders_cache.full_path()),
+      '--sourcedir=@0@'.format(meson.current_source_dir()),
+      '--source',
+      '@INPUT@',
+      '@OUTPUT@',
+    ],
+    depends: [
+      gdk_pixbuf_pixdata,
+      loaders_cache,
+    ],
+  )
 
-resources_h = custom_target('resources.h',
-  input: 'resources.gresource.xml',
-  output: 'resources.h',
-  command: [
-    gen_resources,
-    '--pixdata=@0@'.format(gdk_pixbuf_pixdata.full_path()),
-    '--loaders=@0@'.format(loaders_cache.full_path()),
-    '--sourcedir=@0@'.format(meson.current_source_dir()),
-    '--header',
-    '@INPUT@',
-    '@OUTPUT@',
-  ],
-  depends: [
-    gdk_pixbuf_pixdata,
-    loaders_cache,
-  ],
-)
+  resources_h = custom_target('resources.h',
+    input: 'resources.gresource.xml',
+    output: 'resources.h',
+    command: [
+      gen_resources,
+      '--pixdata=@0@'.format(gdk_pixbuf_pixdata.full_path()),
+      '--loaders=@0@'.format(loaders_cache.full_path()),
+      '--sourcedir=@0@'.format(meson.current_source_dir()),
+      '--header',
+      '@INPUT@',
+      '@OUTPUT@',
+    ],
+    depends: [
+      gdk_pixbuf_pixdata,
+      loaders_cache,
+    ],
+  )
+  no_resources = false
+else
+  resources_c = []
+  resources_h = []
+  no_resources = true
+endif
 
-# [ test name, [ test suites ], needs_resources (opt) ]
+# {
+#   'test name': {
+#     'suites': [ test suites ], (optional)
+#     'needs_resources': bool, (optional)
+#     'skip': bool, (optional)
+#   }
+# }
 #
 # test suites:
 #  - conform: Behavior conformance test
@@ -46,31 +61,67 @@ resources_h = custom_target('resources.h',
 #  - format: Per-format test
 #  - io: Loading/saving
 #  - ops: Pixel operations
-installed_tests = [
-  [ 'pixbuf-construction', ['conform'], ],
-  [ 'animation', ['format'], ],
-  [ 'cve-2015-4491', ['security'], true ],
-  [ 'pixbuf-fail', ['conform', 'slow'], ],
-  [ 'pixbuf-icon-serialize', ['conform'], ],
-  [ 'pixbuf-randomly-modified', ['slow'], ],
-  [ 'pixbuf-threads', ['io'], ],
-  [ 'pixbuf-gif', ['io'], ],
-  [ 'pixbuf-icc', ['io'], ],
-  [ 'pixbuf-jpeg', ['format'], ],
-  [ 'pixbuf-dpi', ['io'], ],
-  [ 'pixbuf-pixdata', ['format'], true ],
-  [ 'pixbuf-stream', ['io'], ],
-  [ 'pixbuf-reftest', ['conform'], ],
-  [ 'pixbuf-resource', ['io'], true ],
-  [ 'pixbuf-scale', ['ops'], ],
-  [ 'pixbuf-scale-two-step', ['ops'], ],
-  [ 'pixbuf-short-gif-write', ['format'], ],
-  [ 'pixbuf-gif-circular-table', ['format'], ],
-  [ 'pixbuf-save', ['io'] ],
-  [ 'pixbuf-readonly-to-mutable', ['conform'], ],
-  [ 'pixbuf-composite', ['ops'], ],
-  [ 'pixbuf-area-updated', ['slow'], ],
-]
+installed_tests = {
+  'pixbuf-construction': { 'suites': ['conform'], },
+  'animation': {
+    'suites': ['format'],
+    'skip': not enabled_loaders.contains('gif'),
+  },
+  'cve-2015-4491': {
+    'suites': ['security'],
+    'needs_resources': true,
+    'skip': no_resources,
+  },
+  'pixbuf-fail': { 'suites': ['conform', 'slow'], },
+  'pixbuf-icon-serialize': { 'suites': ['conform'], },
+  'pixbuf-randomly-modified': { 'suites': ['slow'], },
+  'pixbuf-threads': { 'suites': ['io'], },
+  'pixbuf-gif': {
+    'suites': ['io'],
+    'skip': not enabled_loaders.contains('gif'),
+  },
+  'pixbuf-icc': {
+    'suites': ['io'],
+  },
+  'pixbuf-jpeg': {
+    'suites': ['format'],
+    'skip': not enabled_loaders.contains('jpeg'),
+  },
+  'pixbuf-dpi': {
+    'suites': ['io'],
+  },
+  'pixbuf-pixdata': {
+    'suites': ['format'],
+    'needs_resources': true,
+    'skip': no_resources,
+  },
+  'pixbuf-stream': { 'suites': ['io'], },
+  'pixbuf-reftest': {
+    'suites': ['conform'],
+  },
+  'pixbuf-resource': {
+    'suites': ['io'],
+    'needs_resources': true,
+    'skip': no_resources,
+  },
+  'pixbuf-scale': { 'suites': ['ops'], },
+  'pixbuf-scale-two-step': { 'suites': ['ops'], },
+  'pixbuf-short-gif-write': {
+    'suites': ['format'],
+    'skip': not enabled_loaders.contains('gif'),
+  },
+  'pixbuf-gif-circular-table': {
+    'suites': ['format'],
+    'skip': not enabled_loaders.contains('gif'),
+  },
+  'pixbuf-save': { 'suites': ['io'] },
+  'pixbuf-readonly-to-mutable': { 'suites': ['conform'], },
+  'pixbuf-composite': {
+    'suites': ['ops'],
+    'skip': not enabled_loaders.contains('png'),
+  },
+  'pixbuf-area-updated': { 'suites': ['slow'], },
+}
 
 test_data = [
   'test-image.png',
@@ -108,22 +159,27 @@ if get_option('installed_tests')
   install_subdir('test-images', install_dir: installed_test_bindir)
 endif
 
-test_deps = gdk_pixbuf_deps + [ gdkpixbuf_dep ]
+test_deps = gdk_pixbuf_deps + [ gdkpixbuf_dep, ]
+test_args = [ '-k', '--tap' ]
+test_env = environment()
+test_env.set('G_TEST_SRCDIR', meson.current_source_dir())
+test_env.set('G_TEST_BUILDDIR', meson.current_build_dir())
+test_env.set('GDK_PIXBUF_MODULE_FILE', loaders_cache.full_path())
 
-foreach t: installed_tests
-  test_name = t[0]
+foreach test_name, test_data: installed_tests
   test_sources = [ test_name + '.c', 'test-common.c' ]
-  test_suites = t[1]
-  needs_resources = t.get(2, false)
+  test_suites = test_data.get('suites', [])
+  needs_resources = test_data.get('needs_resources', false)
   if needs_resources
     test_sources += [ resources_c, resources_h ]
   endif
+  skip_if_true = test_data.get('skip', false)
 
   custom_target(test_name + '.test',
     output: test_name + '.test',
     command: [
       gen_installed_test,
-      '--testbindir=@0@'.format(installed_test_bindir),
+      '--testbindir="@0@"'.format(installed_test_bindir),
       '--testbin=@0@'.format(test_name),
       '@OUTPUT@',
     ],
@@ -131,34 +187,30 @@ foreach t: installed_tests
     install_dir: installed_test_datadir,
   )
 
-  test_bin = executable(test_name, test_sources,
-    dependencies: test_deps,
-    include_directories: [
-      root_inc,
-      gdk_pixbuf_inc,
-    ],
-    c_args: common_cflags,
-    install: get_option('installed_tests'),
-    install_dir: installed_test_bindir,
-  )
+  if not skip_if_true
+    test_bin = executable(test_name, test_sources,
+      dependencies: test_deps,
+      include_directories: [ root_inc, gdk_pixbuf_inc, ],
+      c_args: common_cflags,
+      install: get_option('installed_tests'),
+      install_dir: installed_test_bindir,
+    )
 
-  # Two particularly slow tests
-  if test_suites.contains('slow')
-    timeout = 300
-  else
-    timeout = 30
-  endif
+    # Two particularly slow tests
+    if test_suites.contains('slow')
+      timeout = 300
+    else
+      timeout = 30
+    endif
 
-  test(test_name, test_bin,
-    suite: test_suites,
-    args: [ '-k', '--tap' ],
-    env: [
-      'G_TEST_SRCDIR=@0@'.format(meson.current_source_dir()),
-      'G_TEST_BUILDDIR=@0@'.format(meson.current_build_dir()),
-      'GDK_PIXBUF_MODULE_FILE=@0@'.format(loaders_cache.full_path()),
-    ],
-    timeout: timeout,
-  )
+    test(test_name, test_bin,
+      suite: test_suites,
+      args: test_args,
+      env: test_env,
+      timeout: timeout,
+      protocol: 'tap',
+    )
+  endif
 endforeach
 
 executable('pixbuf-read',