X-Git-Url: http://nitlanguage.org

diff --git a/src/testing/testing_doc.nit b/src/testing/testing_doc.nit
index 86466bf..46f5a4a 100644
--- a/src/testing/testing_doc.nit
+++ b/src/testing/testing_doc.nit
@@ -15,202 +15,575 @@
 # Testing from code comments.
 module testing_doc
 
+private import parser_util
 import testing_base
-intrude import docdown
+import markdown2
+import html
+import realtime
 
 # Extractor, Executor and Reporter for the tests in a module
 class NitUnitExecutor
-	super Doc2Mdwn
+
+	# Toolcontext used to parse Nit code blocks.
+	var toolcontext: ToolContext
 
 	# The prefix of the generated Nit source-file
 	var prefix: String
 
-	# The module to import
-	var mmodule: MModule
+	# The module to import, if any
+	var mmodule: nullable MModule
 
 	# The XML node associated to the module
 	var testsuite: HTMLTag
 
-	# All blocks of code from a same `ADoc`
-	var blocks = new Array[Array[String]]
+	# The name of the suite
+	var name: String
+
+	# Markdown parse used to parse markdown comments and extract code
+	private var md_parser = new MdParser
+
+	# Markdown visitor used to extract markdown code blocks
+	private var md_visitor = new NitunitMdVisitor(self) is lazy
 
-	redef fun process_code(n: HTMLTag, text: String, tag: nullable String)
+	# The associated documentation object
+	var mdoc: nullable MDoc = null
+
+	# used to generate distinct names
+	var cpt = 0
+
+	# The last docunit extracted from a mdoc.
+	#
+	# Is used because a new code-block might just be added to it.
+	var last_docunit: nullable DocUnit = null
+
+	# Unit class name in XML output
+	var xml_classname: String is noautoinit
+
+	# Unit name in xml output
+	var xml_name: String is noautoinit
+
+	# The entry point for a new `ndoc` node
+	# Fill `docunits` with new discovered unit of tests.
+	fun extract(mdoc: MDoc, xml_classname, xml_name: String)
 	do
-		# Skip non-blocks
-		if n.tag != "pre" then return
+		last_docunit = null
+		self.xml_classname = xml_classname
+		self.xml_name = xml_name
 
-		# Try to parse it
-		var ast = toolcontext.parse_something(text)
+		self.mdoc = mdoc
 
-		# We want executable code
-		if not (ast isa AModule or ast isa ABlockExpr or ast isa AExpr) then
-			if ndoc != null and n.tag == "pre" and toolcontext.opt_warn.value > 1 then
-				toolcontext.warning(ndoc.location, "invalid-block", "Warning: There is a block of code that is not valid Nit, thus not considered a nitunit")
-				if ast isa AError then toolcontext.warning(ast.location, "syntax-error", ast.message)
-				ndoc = null # To avoid multiple warning in the same node
-			end
+		# Populate `blocks` from the markdown decorator
+		var md_node = md_parser.parse(mdoc.content.join("\n"))
+		md_visitor.enter_visit(md_node)
+	end
+
+	# All extracted docunits
+	var docunits = new Array[DocUnit]
+
+	# Display current testing status
+	fun show_status do toolcontext.show_unit_status(name, docunits)
+
+	# Update display when a test case is done
+	fun mark_done(du: DocUnit)
+	do
+		du.is_done = true
+		toolcontext.clear_progress_bar
+		toolcontext.show_unit(du)
+		show_status
+	end
+
+	# Execute all the docunits
+	fun run_tests
+	do
+		if docunits.is_empty then
 			return
 		end
 
-		# Search `assert` in the AST
-		var v = new SearchAssertVisitor
-		v.enter_visit(ast)
-		if not v.foundit then
-			if ndoc != null and n.tag == "pre" and toolcontext.opt_warn.value > 1 then
-				toolcontext.warning(ndoc.location, "invalid-block", "Warning: There is a block of Nit code without `assert`, thus not considered a nitunit")
-				ndoc = null # To avoid multiple warning in the same node
+		# Try to group each nitunit into a single source file to fasten the compilation
+		var simple_du = new Array[DocUnit] # du that are simple statements
+		var single_du = new Array[DocUnit] # du that are modules or include classes
+		show_status
+		for du in docunits do
+			# Skip existing errors
+			if du.error != null then
+				continue
+			end
+
+			var ast = toolcontext.parse_something(du.block)
+			if ast isa AExpr then
+				simple_du.add du
+			else
+				single_du.add du
 			end
-			return
 		end
 
-		# Create a first block
-		# Or create a new block for modules that are more than a main part
-		if blocks.is_empty or ast isa AModule then
-			blocks.add(new Array[String])
+		# Try to mass compile all the simple du as a single nit module
+		compile_simple_docunits(simple_du)
+		# Try to mass compile all the single du in a single nitc invocation with many modules
+		compile_single_docunits(single_du)
+		# If the mass compilation fail, then each one will be compiled individually
+
+		# Now test them in order
+		for du in docunits do
+			if du.error != null then
+				# Nothing to execute. Conclude
+			else if du.is_compiled then
+				# Already compiled. Execute it.
+				execute_simple_docunit(du)
+			else
+				# A mass compilation failed
+				# Need to try to recompile it, then execute it
+				test_single_docunit(du)
+			end
+			mark_done(du)
 		end
 
-		# Add it to the file
-		blocks.last.add(text)
+		# Final status
+		show_status
+		print ""
+
+		for du in docunits do
+			testsuite.add du.to_xml
+		end
 	end
 
-	# The associated node to localize warnings
-	var ndoc: nullable ADoc = null
+	# Compiles multiples doc-units in a shared program.
+	# Used for docunits simple block of code (without modules, classes, functions etc.)
+	#
+	# In case of success, the docunits are compiled and the caller can call `execute_simple_docunit`.
+	#
+	# In case of compilation error, the docunits are let uncompiled.
+	# The caller should fallbacks to `test_single_docunit` to
+	# * locate exactly the compilation problem in the problematic docunit.
+	# * permit the execution of the other docunits that may be correct.
+	fun compile_simple_docunits(dus: Array[DocUnit])
+	do
+		if dus.is_empty then return
 
-	# used to generate distinct names
-	var cpt = 0
+		var file = "{prefix}-0.nit"
 
-	# The entry point for a new `ndoc` node
-	# Fill the prepated `tc` (testcase) XTM node
-	fun extract(ndoc: ADoc, tc: HTMLTag)
-	do
-		blocks.clear
+		toolcontext.info("Compile {dus.length} simple(s) doc-unit(s) in {file}", 1)
 
-		self.ndoc = ndoc
+		var dir = file.dirname
+		if dir != "" then dir.mkdir
+		var f
+		f = create_unitfile(file)
+		var i = 0
+		for du in dus do
+			i += 1
+			f.write("fun run_{i} do\n")
+			f.write("# {du.full_name}\n")
+			f.write(du.block)
+			f.write("end\n")
+		end
+		f.write("var a = args.first.to_i\n")
+		for j in [1..i] do
+			f.write("if a == {j} then run_{j}\n")
+		end
+		f.close
 
-		work(ndoc.to_mdoc)
-		toolcontext.check_errors
+		if toolcontext.opt_noact.value then return
+
+		var res = compile_unitfile(file)
 
-		if blocks.is_empty then return
+		if res != 0 then
+			# Compilation error.
+			# They should be generated and compiled independently
+			return
+		end
 
-		for block in blocks do test_block(ndoc, tc, block)
+		# Compilation was a success.
+		# Store what need to be executed for each one.
+		i = 0
+		for du in dus do
+			i += 1
+			du.test_file = file
+			du.test_arg = i
+			du.is_compiled = true
+		end
 	end
 
-	# Execute a block
-	fun test_block(ndoc: ADoc, tc: HTMLTag, block: Array[String])
+	# Execute a docunit compiled by `test_single_docunit`
+	fun execute_simple_docunit(du: DocUnit)
 	do
-		toolcontext.modelbuilder.unit_entities += 1
+		var file = du.test_file.as(not null)
+		var i = du.test_arg or else 0
+		toolcontext.info("Execute doc-unit {du.full_name} in {file} {i}", 1)
+		var clock = new Clock
+		var res2 = toolcontext.safe_exec("{file.to_program_name}.bin {i} >'{file}.out1' 2>&1 </dev/null")
+		if not toolcontext.opt_no_time.value then du.real_time = clock.total
+		du.was_exec = true
+
+		var content = "{file}.out1".to_path.read_all
+		du.raw_output = content
+
+		if res2 != 0 then
+			du.error = "Runtime error in {file} with argument {i}"
+			toolcontext.modelbuilder.failed_entities += 1
+		end
+	end
 
+	# Produce a single unit file for the docunit `du`.
+	fun generate_single_docunit(du: DocUnit): String
+	do
 		cpt += 1
 		var file = "{prefix}-{cpt}.nit"
 
-		toolcontext.info("Execute doc-unit {tc.attrs["name"]} in {file}", 1)
+		var f
+		f = create_unitfile(file)
+		f.write(du.block)
+		f.close
+
+		du.test_file = file
+		return file
+	end
+
+	# Executes a single doc-unit in its own program.
+	# Used for docunits larger than a single block of code (with modules, classes, functions etc.)
+	fun test_single_docunit(du: DocUnit)
+	do
+		var file = generate_single_docunit(du)
+
+		toolcontext.info("Compile doc-unit {du.full_name} in {file}", 1)
+
+		if toolcontext.opt_noact.value then return
+
+		var res = compile_unitfile(file)
+		var content = "{file}.out1".to_path.read_all
+		du.raw_output = content
+
+		du.test_file = file
 
+		if res != 0 then
+			du.error = "Compilation error in {file}"
+			toolcontext.modelbuilder.failed_entities += 1
+			return
+		end
+
+		du.is_compiled = true
+		execute_simple_docunit(du)
+	end
+
+	# Create and fill the header of a unit file `file`.
+	#
+	# A unit file is a Nit source file generated from one
+	# or more docunits that will be compiled and executed.
+	#
+	# The handled on the file is returned and must be completed and closed.
+	#
+	# `file` should be a valid filepath for a Nit source file.
+	private fun create_unitfile(file: String): Writer
+	do
+		var mmodule = self.mmodule
 		var dir = file.dirname
 		if dir != "" then dir.mkdir
 		var f
-		f = new OFStream.open(file)
+		f = new FileWriter.open(file)
 		f.write("# GENERATED FILE\n")
-		f.write("# Example extracted from a documentation\n")
-		f.write("import {mmodule.name}\n")
+		f.write("# Docunits extracted from comments\n")
+		if mmodule != null then
+			f.write("intrude import {mmodule.name}\n")
+		end
 		f.write("\n")
-		for text in block do
-			f.write(text)
+		return f
+	end
+
+	# Compile a unit file and return the compiler return code
+	#
+	# Can terminate the program if the compiler is not found
+	private fun compile_unitfile(file: String): Int
+	do
+		var mmodule = self.mmodule
+		var nitc = toolcontext.find_nitc
+		var opts = new Array[String]
+		if mmodule != null then
+			# FIXME playing this way with the include dir is not safe nor robust
+			opts.add "-I {mmodule.filepath.as(not null).dirname}"
 		end
-		f.close
+		var cmd = "{nitc} --ignore-visibility --no-color -q '{file}' {opts.join(" ")} >'{file}.out1' 2>&1 </dev/null -o '{file}.bin'"
+		var res = toolcontext.safe_exec(cmd)
+		return res
+	end
 
-		if toolcontext.opt_noact.value then return
+	# Compile a unit file and return the compiler return code
+	#
+	# Can terminate the program if the compiler is not found
+	private fun compile_single_docunits(dus: Array[DocUnit]): Int
+	do
+		# Generate all unitfiles
+		var files = new Array[String]
+		for du in dus do
+			files.add generate_single_docunit(du)
+		end
+
+		if files.is_empty then return 0
 
-		var nit_dir = toolcontext.nit_dir
-		var nitg = nit_dir/"bin/nitg"
-		if not nitg.file_exists then
-			toolcontext.error(null, "Cannot find nitg. Set envvar NIT_DIR.")
-			toolcontext.check_errors
+		toolcontext.info("Compile {dus.length} single(s) doc-unit(s) at once", 1)
+
+		# Mass compile them
+		var nitc = toolcontext.find_nitc
+		var opts = new Array[String]
+		if mmodule != null then
+			# FIXME playing this way with the include dir is not safe nor robust
+			opts.add "-I {mmodule.filepath.dirname}"
 		end
-		var cmd = "{nitg} --ignore-visibility --no-color '{file}' -I {mmodule.location.file.filename.dirname} >'{file}.out1' 2>&1 </dev/null -o '{file}.bin'"
-		var res = sys.system(cmd)
-		var res2 = 0
-		if res == 0 then
-			res2 = sys.system("{file.to_program_name}.bin >>'{file}.out1' 2>&1 </dev/null")
+		var cmd = "{nitc} --ignore-visibility --no-color -q '{files.join("' '")}' {opts.join(" ")} > '{prefix}.out1' 2>&1 </dev/null --dir {prefix.dirname}"
+		var res = toolcontext.safe_exec(cmd)
+		if res != 0 then
+			# Mass compilation failure
+			return res
 		end
 
-		var msg
-		f = new IFStream.open("{file}.out1")
-		var n2
-		n2 = new HTMLTag("system-err")
-		tc.add n2
-		msg = f.read_all
-		f.close
+		# Rename each file into it expected binary name
+		for du in dus do
+			var f = du.test_file.as(not null)
+			toolcontext.safe_exec("mv '{f.strip_extension(".nit")}' '{f}.bin'")
+			du.is_compiled = true
+		end
 
-		n2 = new HTMLTag("system-out")
-		tc.add n2
-		for text in block do n2.append(text)
+		return res
+	end
+end
 
+private class NitunitMdVisitor
+	super MdVisitor
 
-		if res != 0 then
-			var ne = new HTMLTag("failure")
-			ne.attr("message", msg)
-			tc.add ne
-			toolcontext.warning(ndoc.location, "failure", "FAILURE: {tc.attrs["classname"]}.{tc.attrs["name"]} (in {file}): {msg}")
-			toolcontext.modelbuilder.failed_entities += 1
-		else if res2 != 0 then
-			var ne = new HTMLTag("error")
-			ne.attr("message", msg)
-			tc.add ne
-			toolcontext.warning(ndoc.location, "error", "ERROR: {tc.attrs["classname"]}.{tc.attrs["name"]} (in {file}): {msg}")
-			toolcontext.modelbuilder.failed_entities += 1
+	var executor: NitUnitExecutor
+
+	redef fun visit(node) do node.accept_nitunit(self)
+
+	fun parse_code(block: MdCodeBlock) do
+		var code = block.literal
+		if code == null then return
+
+		var meta = block.info or else "nit"
+		# Do not try to test non-nit code.
+		if meta != "nit" then return
+
+		# Try to parse code blocks
+		var executor = self.executor
+		var ast = executor.toolcontext.parse_something(code)
+
+		var mdoc = executor.mdoc
+		assert mdoc != null
+
+		# Skip pure comments
+		if ast isa TComment then return
+
+		# The location is computed according to the starts of the mdoc and the block
+		# Note, the following assumes that all the comments of the mdoc are correctly aligned.
+		var loc = block.location
+		var line_offset = loc.line_start + mdoc.location.line_start - 2
+		var column_offset = loc.column_start + mdoc.location.column_start
+		# Hack to handle precise location in blocks
+		# TODO remove when markdown is more reliable
+		if block isa MdFencedCodeBlock then
+			# Skip the starting fence
+			line_offset += 1
+		else
+			# Account a standard 4 space indentation
+			column_offset += 4
 		end
-		toolcontext.check_errors
 
-		testsuite.add(tc)
+		# We want executable code
+		if not (ast isa AModule or ast isa ABlockExpr or ast isa AExpr) then
+			var message
+			var l = ast.location
+			# Get real location of the node (or error)
+			var location = new Location(mdoc.location.file,
+				l.line_start + line_offset,
+				l.line_end + line_offset,
+				l.column_start + column_offset,
+				l.column_end + column_offset)
+			if ast isa AError then
+				message = ast.message
+			else
+				message = "Error: Invalid Nit code."
+			end
+
+			var du = new_docunit
+			du.block += code
+			du.error_location = location
+			du.error = message
+			executor.toolcontext.modelbuilder.failed_entities += 1
+			return
+		end
+
+		# Create a first block
+		# Or create a new block for modules that are more than a main part
+		var last_docunit = executor.last_docunit
+		if last_docunit == null or ast isa AModule then
+			last_docunit = new_docunit
+			executor.last_docunit = last_docunit
+		end
+
+		# Add it to the file
+		last_docunit.block += code
+
+		# In order to retrieve precise positions,
+		# the real position of each line of the raw_content is stored.
+		# See `DocUnit::real_location`
+		line_offset -= loc.line_start - 1
+		for i in [loc.line_start..loc.line_end] do
+			last_docunit.lines.add i + line_offset
+			last_docunit.columns.add column_offset
+		end
+	end
+
+	# Return and register a new empty docunit
+	fun new_docunit: DocUnit do
+		var mdoc = executor.mdoc
+		assert mdoc != null
+
+		var next_number = 1
+		var name = executor.xml_name
+		if executor.docunits.not_empty and executor.docunits.last.mdoc == mdoc then
+			next_number = executor.docunits.last.number + 1
+			name += "#" + next_number.to_s
+		end
+
+		var res = new DocUnit(mdoc, next_number, "", executor.xml_classname, name)
+		executor.docunits.add res
+		executor.toolcontext.modelbuilder.unit_entities += 1
+		return res
 	end
 end
 
-class SearchAssertVisitor
-	super Visitor
-	var foundit = false
-	redef fun visit(node)
-	do
-		if foundit then
-			return
-		else if node isa AAssertExpr then
-			foundit = true
-			return
+redef class MdNode
+	private fun accept_nitunit(v: NitunitMdVisitor) do visit_all(v)
+end
+
+redef class MdCodeBlock
+	redef fun accept_nitunit(v) do v.parse_code(self)
+end
+
+# A unit-test extracted from some documentation.
+#
+# A docunit is extracted from the code-blocks of mdocs.
+# Each mdoc can contains more than one docunit, and a single docunit can be made of more that a single code-block.
+class DocUnit
+	super UnitTest
+
+	# The doc that contains self
+	var mdoc: MDoc
+
+	# The numbering of self in mdoc (starting with 0)
+	var number: Int
+
+	# The generated Nit source file that contains the unit-test
+	#
+	# Note that a same generated file can be used for multiple tests.
+	# See `test_arg` that is used to distinguish them
+	var test_file: nullable String = null
+
+	#  Was `test_file` successfully compiled?
+	var is_compiled = false
+
+	# The command-line argument to use when executing the test, if any.
+	var test_arg: nullable Int = null
+
+	redef fun full_name do
+		var mentity = mdoc.original_mentity
+		if mentity != null then
+			var res = mentity.full_name
+			if number > 1 then
+				res += "#{number}"
+			end
+			return res
 		else
-			node.visit_all(self)
+			return xml_classname + "." + xml_name
 		end
 	end
+
+	# The text of the code to execute.
+	#
+	# This is the verbatim content on one, or more, code-blocks from `mdoc`
+	var block: String
+
+	# For each line in `block`, the associated line in the mdoc
+	#
+	# Is used to give precise locations
+	var lines = new Array[Int]
+
+	# For each line in `block`, the associated column in the mdoc
+	#
+	# Is used to give precise locations
+	var columns = new Array[Int]
+
+	# The location of the whole docunit.
+	#
+	# If `self` is made of multiple code-blocks, then the location
+	# starts at the first code-books and finish at the last one, thus includes anything between.
+	redef var location is lazy do
+		return new Location(mdoc.location.file, lines.first, lines.last+1, columns.first+1, 0)
+	end
+
+	# Compute the real location of a node on the `ast` based on `mdoc.location`
+	#
+	# The result is basically: ast_location + markdown location of the piece + mdoc.location
+	#
+	# The fun is that a single docunit can be made of various pieces of code blocks.
+	fun real_location(ast_location: Location): Location
+	do
+		var mdoc = self.mdoc
+
+		var res = new Location(mdoc.location.file,
+			lines[ast_location.line_start-1],
+			lines[ast_location.line_end-1],
+			columns[ast_location.line_start-1] + ast_location.column_start,
+			columns[ast_location.line_end-1] + ast_location.column_end)
+
+		return res
+	end
+
+	redef fun to_xml
+	do
+		var res = super
+		res.open("system-out").append(block)
+		return res
+	end
+
+	redef var xml_classname
+	redef var xml_name
 end
 
 redef class ModelBuilder
+	# Total number analyzed `MEntity`
 	var total_entities = 0
+
+	# The number of `MEntity` that have some documentation
 	var doc_entities = 0
+
+	# The total number of executed docunits
 	var unit_entities = 0
+
+	# The number failed docunits
 	var failed_entities = 0
 
+	# Extracts and executes all the docunits in the `mmodule`
+	# Returns a JUnit-compatible `<testsuite>` XML element that contains the results of the executions.
 	fun test_markdown(mmodule: MModule): HTMLTag
 	do
 		var ts = new HTMLTag("testsuite")
 		toolcontext.info("nitunit: doc-unit {mmodule}", 2)
-		if not mmodule2nmodule.has_key(mmodule) then return ts
 
-		var nmodule = mmodule2nmodule[mmodule]
+		var nmodule = mmodule2node(mmodule)
+		if nmodule == null then return ts
 
 		# usualy, only the original module must be imported in the unit test.
 		var o = mmodule
 		var g = o.mgroup
-		if g != null and g.mproject.name == "standard" then
-			# except for a unit test in a module of standard
-			# in this case, the whole standard must be imported
-			o = get_mmodule_by_name(nmodule, g, g.mproject.name).as(not null)
+		if g != null and g.mpackage.name == "core" then
+			# except for a unit test in a module of `core`
+			# in this case, the whole `core` must be imported
+			o = get_mmodule_by_name(nmodule, g, g.mpackage.name).as(not null)
 		end
 
 		ts.attr("package", mmodule.full_name)
 
 		var prefix = toolcontext.test_dir
 		prefix = prefix.join_path(mmodule.to_s)
-		var d2m = new NitUnitExecutor(toolcontext, prefix, o, ts)
-
-		var tc
+		var d2m = new NitUnitExecutor(toolcontext, prefix, o, ts, "Docunits of module {mmodule.full_name}")
 
 		do
 			total_entities += 1
@@ -219,11 +592,8 @@ redef class ModelBuilder
 			var ndoc = nmoduledecl.n_doc
 			if ndoc == null then break label x
 			doc_entities += 1
-			tc = new HTMLTag("testcase")
 			# NOTE: jenkins expects a '.' in the classname attr
-			tc.attr("classname", "nitunit." + mmodule.full_name + ".<module>")
-			tc.attr("name", "<module>")
-			d2m.extract(ndoc, tc)
+			d2m.extract(ndoc.to_mdoc, "nitunit." + mmodule.full_name + ".<module>", "<module>")
 		end label x
 		for nclassdef in nmodule.n_classdefs do
 			var mclassdef = nclassdef.mclassdef
@@ -233,10 +603,7 @@ redef class ModelBuilder
 				var ndoc = nclassdef.n_doc
 				if ndoc != null then
 					doc_entities += 1
-					tc = new HTMLTag("testcase")
-					tc.attr("classname", "nitunit." + mmodule.full_name + "." + mclassdef.mclass.full_name)
-					tc.attr("name", "<class>")
-					d2m.extract(ndoc, tc)
+					d2m.extract(ndoc.to_mdoc, "nitunit." + mclassdef.full_name.replace("$", "."), "<class>")
 				end
 			end
 			for npropdef in nclassdef.n_propdefs do
@@ -246,14 +613,66 @@ redef class ModelBuilder
 				var ndoc = npropdef.n_doc
 				if ndoc != null then
 					doc_entities += 1
-					tc = new HTMLTag("testcase")
-					tc.attr("classname", "nitunit." + mmodule.full_name + "." + mclassdef.mclass.full_name)
-					tc.attr("name", mpropdef.mproperty.full_name)
-					d2m.extract(ndoc, tc)
+					var a = mpropdef.full_name.split("$")
+					d2m.extract(ndoc.to_mdoc, "nitunit." + a[0] + "." + a[1], a[2])
 				end
 			end
 		end
 
+		d2m.run_tests
+
+		return ts
+	end
+
+	# Extracts and executes all the docunits in the readme of the `mgroup`
+	# Returns a JUnit-compatible `<testsuite>` XML element that contains the results of the executions.
+	fun test_group(mgroup: MGroup): HTMLTag
+	do
+		var ts = new HTMLTag("testsuite")
+		toolcontext.info("nitunit: doc-unit group {mgroup}", 2)
+
+		# usually, only the default module must be imported in the unit test.
+		var o = mgroup.default_mmodule
+
+		ts.attr("package", mgroup.full_name)
+
+		var prefix = toolcontext.test_dir
+		prefix = prefix.join_path(mgroup.to_s)
+		var d2m = new NitUnitExecutor(toolcontext, prefix, o, ts, "Docunits of group {mgroup.full_name}")
+
+		total_entities += 1
+		var mdoc = mgroup.mdoc
+		if mdoc == null then return ts
+
+		doc_entities += 1
+		# NOTE: jenkins expects a '.' in the classname attr
+		d2m.extract(mdoc, "nitunit." + mgroup.mpackage.name + "." + mgroup.name + ".<group>", "<group>")
+
+		d2m.run_tests
+
+		return ts
+	end
+
+	# Test a document object unrelated to a Nit entity
+	fun test_mdoc(mdoc: MDoc): HTMLTag
+	do
+		var ts = new HTMLTag("testsuite")
+		var file = mdoc.location.file.as(not null).filename
+
+		toolcontext.info("nitunit: doc-unit file {file}", 2)
+
+		ts.attr("package", file)
+
+		var prefix = toolcontext.test_dir / "file"
+		var d2m = new NitUnitExecutor(toolcontext, prefix, null, ts, "Docunits of file {file}")
+
+		total_entities += 1
+		doc_entities += 1
+
+		# NOTE: jenkins expects a '.' in the classname attr
+		d2m.extract(mdoc, "nitunit.<file>", file)
+		d2m.run_tests
+
 		return ts
 	end
 end