Initial project import

tools/v/vlib/runtime/runtime_test.v

@@ -0,0 +1,91 @@
+import os
+import runtime
+
+fn test_physical_memory() {
+	$if windows || linux || darwin || freebsd || openbsd {
+		total := runtime.total_memory()!
+		free := runtime.free_memory()!
+		println('total memory: ${total}')
+		println('free  memory: ${free}')
+		assert total > 0 && free > 0
+	} $else {
+		total := runtime.total_memory()!
+		_ := runtime.free_memory() or { assert err.msg().contains('not implemented') }
+		assert total > 0
+	}
+}
+
+fn test_nr_cpus() {
+	nr_cpus := runtime.nr_cpus()
+	println('     nr cpus: ${nr_cpus}')
+	assert nr_cpus > 0
+}
+
+fn test_nr_jobs() {
+	nr_jobs := runtime.nr_jobs()
+	println('     nr jobs: ${nr_jobs}')
+	assert nr_jobs > 0
+}
+
+fn test_nr_jobs_matches_nr_cpus_without_vjobs() {
+	env := os.environ()
+	had_vjobs := 'VJOBS' in env
+	saved_vjobs := env['VJOBS']
+	defer {
+		if had_vjobs {
+			os.setenv('VJOBS', saved_vjobs, true)
+		} else {
+			os.unsetenv('VJOBS')
+		}
+	}
+	os.unsetenv('VJOBS')
+	assert runtime.nr_jobs() == runtime.nr_cpus()
+}
+
+fn test_nr_jobs_uses_vjobs_override() {
+	env := os.environ()
+	had_vjobs := 'VJOBS' in env
+	saved_vjobs := env['VJOBS']
+	defer {
+		if had_vjobs {
+			os.setenv('VJOBS', saved_vjobs, true)
+		} else {
+			os.unsetenv('VJOBS')
+		}
+	}
+	expected_jobs := runtime.nr_cpus() + 1
+	os.setenv('VJOBS', expected_jobs.str(), true)
+	assert runtime.nr_jobs() == expected_jobs
+}
+
+fn test_is_32bit() {
+	x := runtime.is_32bit().str()
+	println('    is_32bit: ${x}')
+	assert x == 'true' || x == 'false'
+}
+
+fn test_is_64bit() {
+	x := runtime.is_64bit().str()
+	println('    is_64bit: ${x}')
+	assert x == 'true' || x == 'false'
+}
+
+fn test_is_little_endian() {
+	x := runtime.is_little_endian().str()
+	println('       is_le: ${x}')
+	assert x == 'true' || x == 'false'
+}
+
+fn test_is_big_endian() {
+	x := runtime.is_big_endian().str()
+	println('       is_be: ${x}')
+	assert x == 'true' || x == 'false'
+}
+
+fn test_is_big_endian_different_than_is_little_endian() {
+	assert runtime.is_big_endian() != runtime.is_little_endian()
+}
+
+fn test_is_32bit_different_than_is_64bit() {
+	assert runtime.is_32bit() != runtime.is_64bit()
+}