Add unit test that checks that the sample projects compile.

docs/markdown/Project-templates.md

@@ -2,7 +2,7 @@
 short-description: Project templates
 ...
 
-# Project templates (available since 0.45.0)
+# Project templates
 
 To make it easier for new developers to start working, Meson ships a
 tool to generate the basic setup of different kinds of projects. This
@@ -26,3 +26,5 @@ $ ninja -C builddir
 
 The generator has many different projects and settings. They can all
 be listed by invoking the command `meson test --help`.
+
+This feature is available since Meson version 0.45.0.

docs/markdown/snippets/templates.md

@@ -0,0 +1,8 @@
+## Project templates
+
+Meson ships with predefined project templates. To start a new project from
+scratch, simply go to an empty directory and type:
+
+```meson
+meson init --name=myproject --type=executable --language=c
+```

mesonbuild/minit.py

@@ -113,10 +113,10 @@ hello_c_template  = '''#include <stdio.h>
 
 int main(int argc, char **argv) {{
     if(argc != 1) {{
-        printf("%s takes not arguments.\\n", argv[0]);
+        printf("%s takes no arguments.\\n", argv[0]);
         return 1;
     }}
-    printf("This is project %s.\n", PROJECT_NAME);
+    printf("This is project %s.\\n", PROJECT_NAME);
     return 0;
 }}
 '''
@@ -138,7 +138,7 @@ hello_cpp_template  = '''#include <iostream>
 
 int main(int argc, char **argv) {{
     if(argc != 1) {{
-        printf("%s takes not arguments.\\n", argv[0]);
+        std::cout << argv[0] <<  "takes no arguments.\\n";
         return 1;
     }}
     std::cout << "This is project " << PROJECT_NAME << ".\\n";
@@ -209,7 +209,7 @@ lib_cpp_test_template = '''#include <{header_file}>
 
 int main(int argc, char **argv) {{
     if(argc != 1) {{
-        printf("%s takes no arguments.\\n", argv[0]);
+        std::cout << argv[0] << " takes no arguments.\\n";
         return 1;
     }}
     {namespace}::{class_name} c;

run_unittests.py

@@ -36,7 +36,7 @@ import mesonbuild.coredata
 from mesonbuild.interpreter import ObjectHolder
 from mesonbuild.mesonlib import is_linux, is_windows, is_osx, is_cygwin, windows_proof_rmtree
 from mesonbuild.mesonlib import python_command, meson_command, version_compare
-from mesonbuild.environment import Environment
+from mesonbuild.environment import Environment, detect_ninja
 from mesonbuild.mesonlib import MesonException, EnvironmentException
 from mesonbuild.dependencies import PkgConfigDependency, ExternalProgram
 
@@ -1707,6 +1707,19 @@ int main(int argc, char **argv) {
         self.init(workdir)
         self.build()
 
+    def test_templates(self):
+        ninja = detect_ninja()
+        if ninja is None:
+            raise unittest.SkipTest('This test currently requires ninja. Fix this once "meson build" works.')
+        for lang in ('c', 'cpp'):
+            for type in ('executable', 'library'):
+                with tempfile.TemporaryDirectory() as tmpdir:
+                    self._run(meson_command + ['init', '--language', lang, '--type', type],
+                              workdir=tmpdir)
+                    self._run(self.meson_command + ['--backend=ninja', 'builddir'],
+                              workdir=tmpdir)
+                    self._run(ninja,
+                              workdir=os.path.join(tmpdir, 'builddir'))
 
 class FailureTests(BasePlatformTests):
     '''