Add Meson example based on Owen Torres' example.

examples/example_1/meson.build

@@ -0,0 +1,48 @@
+project('Unity example', 'c',
+  license: 'MIT',
+  default_options: [
+    'c_std=c99',
+    'warning_level=3',
+  ],
+  meson_version: '>= 0.49.0'
+)
+
+unity_subproject = subproject('unity')
+unity_dependency = unity_subproject.get_variable('unity_dep')
+unity_gen_runner = unity_subproject.get_variable('gen_test_runner')
+
+src1 = files([
+  'src' / 'ProductionCode.c',
+  'test' / 'TestProductionCode.c',
+])
+
+src2 = files([
+  'src' / 'ProductionCode2.c',
+  'test' / 'TestProductionCode2.c',
+])
+
+inc = include_directories('src')
+
+test1 = executable('test1',
+  sources: [
+    src1,
+    unity_gen_runner.process('test' / 'TestProductionCode.c')
+  ],
+  include_directories: [ inc ],
+  dependencies: [ unity_dependency ],
+)
+
+test('test1', test1,
+  should_fail: true)
+
+test2 = executable('test2',
+  sources: [
+    src2,
+    unity_gen_runner.process('test' / 'TestProductionCode2.c')
+  ],
+  include_directories: [ inc ],
+  dependencies: [ unity_dependency ],
+)
+
+test('test2', test2)
+