build: use "meson test" as the test harness

"meson test" starting with version 0.57 is just as capable and easy to
use as QEMU's own TAP driver.  All existing options for "make check"
work.  The only required code change involves how to mark "slow" tests;
they need to belong to an additional "slow" suite.

The rules for .tap output are replaced by JUnit XML; GitLab is able
to parse that output and present it in the CI pipeline report.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 44 insertions, 68 deletions

diff --git a/scripts/mtest2make.py b/scripts/mtest2make.py
index 02c0453..7067bda 100644
--- a/scripts/mtest2make.py
+++ b/scripts/mtest2make.py
@@ -13,101 +13,79 @@ import sys
 
 class Suite(object):
     def __init__(self):
-        self.tests = list()
-        self.slow_tests = list()
-        self.executables = set()
+        self.deps = set()
+        self.speeds = ['quick']
+
+    def names(self, base):
+        return [base if speed == 'quick' else f'{base}-{speed}' for speed in self.speeds]
+
 
 print('''
 SPEED = quick
 
-# $1 = environment, $2 = test command, $3 = test name, $4 = dir
-.test-human-tap = $1 $(if $4,(cd $4 && $2),$2) -m $(SPEED) < /dev/null | ./scripts/tap-driver.pl --test-name="$3" $(if $(V),,--show-failures-only)
-.test-human-exitcode = $1 $(PYTHON) scripts/test-driver.py $(if $4,-C$4) $(if $(V),--verbose) -- $2 < /dev/null
-.test-tap-tap = $1 $(if $4,(cd $4 && $2),$2) < /dev/null | sed "s/^[a-z][a-z]* [0-9]*/& $3/" || true
-.test-tap-exitcode = printf "%s\\n" 1..1 "`$1 $(if $4,(cd $4 && $2),$2) < /dev/null > /dev/null || echo "not "`ok 1 $3"
-.test.human-print = echo $(if $(V),'$1 $2','Running test $3') &&
-.test.env = MALLOC_PERTURB_=$${MALLOC_PERTURB_:-$$(( $${RANDOM:-0} % 255 + 1))}
+.speed.quick = $(foreach s,$(sort $(filter-out %-slow, $1)), --suite $s)
+.speed.slow = $(foreach s,$(sort $1), --suite $s)
 
-# $1 = test name, $2 = test target (human or tap)
-.test.run = $(call .test.$2-print,$(.test.env.$1),$(.test.cmd.$1),$(.test.name.$1)) $(call .test-$2-$(.test.driver.$1),$(.test.env.$1),$(.test.cmd.$1),$(.test.name.$1),$(.test.dir.$1))
+.mtestargs = --no-rebuild -t 0
+ifneq ($(SPEED), quick)
+.mtestargs += --setup $(SPEED)
+endif
+.mtestargs += $(subst -j,--num-processes , $(filter-out -j, $(lastword -j1 $(filter -j%, $(MAKEFLAGS)))))
 
-.test.output-format = human
-''')
+.check.mtestargs = $(MTESTARGS) $(.mtestargs) $(if $(V),--verbose,--print-errorlogs)
+.bench.mtestargs = $(MTESTARGS) $(.mtestargs) --benchmark --verbose''')
 
 introspect = json.load(sys.stdin)
-i = 0
 
 def process_tests(test, targets, suites):
-    global i
-    env = ' '.join(('%s=%s' % (shlex.quote(k), shlex.quote(v))
-                    for k, v in test['env'].items()))
     executable = test['cmd'][0]
     try:
         executable = os.path.relpath(executable)
     except:
         pass
-    if test['workdir'] is not None:
-        try:
-            test['cmd'][0] = os.path.relpath(executable, test['workdir'])
-        except:
-            test['cmd'][0] = executable
-    else:
-        test['cmd'][0] = executable
-    cmd = ' '.join((shlex.quote(x) for x in test['cmd']))
-    driver = test['protocol'] if 'protocol' in test else 'exitcode'
-
-    i += 1
-    if test['workdir'] is not None:
-        print('.test.dir.%d := %s' % (i, shlex.quote(test['workdir'])))
 
     deps = (targets.get(x, []) for x in test['depends'])
     deps = itertools.chain.from_iterable(deps)
-
-    print('.test.name.%d := %s' % (i, test['name']))
-    print('.test.driver.%d := %s' % (i, driver))
-    print('.test.env.%d := $(.test.env) %s' % (i, env))
-    print('.test.cmd.%d := %s' % (i, cmd))
-    print('.test.deps.%d := %s' % (i, ' '.join(deps)))
-    print('.PHONY: run-test-%d' % (i,))
-    print('run-test-%d: $(.test.deps.%d)' % (i,i))
-    print('\t@$(call .test.run,%d,$(.test.output-format))' % (i,))
+    deps = list(deps)
 
     test_suites = test['suite'] or ['default']
-    is_slow = any(s.endswith('-slow') for s in test_suites)
     for s in test_suites:
         # The suite name in the introspection info is "PROJECT:SUITE"
         s = s.split(':')[1]
+        if s == 'slow':
+            continue
         if s.endswith('-slow'):
             s = s[:-5]
-        if is_slow:
-            suites[s].slow_tests.append(i)
-        else:
-            suites[s].tests.append(i)
-        suites[s].executables.add(executable)
+            suites[s].speeds.append('slow')
+        suites[s].deps.update(deps)
 
 def emit_prolog(suites, prefix):
-    all_tap = ' '.join(('%s-report-%s.tap' % (prefix, k) for k in suites.keys()))
-    print('.PHONY: %s %s-report.tap %s' % (prefix, prefix, all_tap))
-    print('%s: run-tests' % (prefix,))
-    print('%s-report.tap %s: %s-report%%.tap: all' % (prefix, all_tap, prefix))
-    print('''\t$(MAKE) .test.output-format=tap --quiet -Otarget V=1 %s$* | ./scripts/tap-merge.pl | tee "$@" \\
-              | ./scripts/tap-driver.pl $(if $(V),, --show-failures-only)''' % (prefix, ))
+    all_targets = ' '.join((f'{prefix}-{k}' for k in suites.keys()))
+    all_xml = ' '.join((f'{prefix}-report-{k}.junit.xml' for k in suites.keys()))
+    print()
+    print(f'all-{prefix}-targets = {all_targets}')
+    print(f'all-{prefix}-xml = {all_xml}')
+    print(f'.PHONY: {prefix} do-meson-{prefix} {prefix}-report.junit.xml $(all-{prefix}-targets) $(all-{prefix}-xml)')
+    print(f'ifeq ($(filter {prefix}, $(MAKECMDGOALS)),)')
+    print(f'.{prefix}.mtestargs += $(call .speed.$(SPEED), $(.{prefix}.mtest-suites))')
+    print(f'endif')
+    print(f'{prefix}-build: run-ninja')
+    print(f'{prefix} $(all-{prefix}-targets): do-meson-{prefix}')
+    print(f'do-meson-{prefix}: run-ninja; $(if $(MAKE.n),,+)$(MESON) test $(.{prefix}.mtestargs)')
+    print(f'{prefix}-report.junit.xml $(all-{prefix}-xml): {prefix}-report%.junit.xml: run-ninja')
+    print(f'\t$(MAKE) {prefix}$* MTESTARGS="$(MTESTARGS) --logbase {prefix}-report$*" && ln -f meson-logs/$@ .')
 
 def emit_suite(name, suite, prefix):
-    executables = ' '.join(suite.executables)
-    slow_test_numbers = ' '.join((str(x) for x in suite.slow_tests))
-    test_numbers = ' '.join((str(x) for x in suite.tests))
-    target = '%s-%s' % (prefix, name)
-    print('.test.quick.%s := %s' % (target, test_numbers))
-    print('.test.slow.%s := $(.test.quick.%s) %s' % (target, target, slow_test_numbers))
-    print('%s-build: %s' % (prefix, executables))
-    print('.PHONY: %s' % (target, ))
-    print('.PHONY: %s-report-%s.tap' % (prefix, name))
-    print('%s: run-tests' % (target, ))
-    print('ifneq ($(filter %s %s, $(MAKECMDGOALS)),)' % (target, prefix))
-    print('.tests += $(.test.$(SPEED).%s)' % (target, ))
-    print('endif')
-    print('all-%s-targets += %s' % (prefix, target))
+    deps = ' '.join(suite.deps)
+    targets = f'{prefix}-{name} {prefix}-report-{name}.junit.xml {prefix} {prefix}-report.junit.xml'
+    print()
+    print(f'.{prefix}-{name}.deps = {deps}')
+    print(f'ifneq ($(filter {prefix}-build {targets}, $(MAKECMDGOALS)),)')
+    print(f'.{prefix}.build-suites += {name}')
+    print(f'endif')
+    print(f'ifneq ($(filter {targets}, $(MAKECMDGOALS)),)')
+    print(f'.{prefix}.mtest-suites += ' + ' '.join(suite.names(name)))
+    print(f'endif')
 
 targets = {t['id']: [os.path.relpath(f) for f in t['filename']]
            for t in introspect['targets']}
@@ -125,5 +103,3 @@ for test in introspect['benchmarks']:
 emit_prolog(benchsuites, 'bench')
 for name, suite in benchsuites.items():
     emit_suite(name, suite, 'bench')
-
-print('run-tests: $(patsubst %, run-test-%, $(.tests))')