check captured logging messages

Project.toml

@@ -1,7 +1,7 @@
 name = "EzXML"
-version = "0.9.1"
-authors = ["Kenta Sato <bicycle1885@gmail.com>"]
 uuid = "8f5d6c58-4d21-5cfd-889c-e3ad7ee6a615"
+authors = ["Kenta Sato <bicycle1885@gmail.com>"]
+version = "0.9.1"
 
 [deps]
 BinaryProvider = "b99e7846-7c00-51b0-8f62-c81ae34c0232"
@@ -10,6 +10,7 @@ Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 
 [targets]
-test = ["Test"]
+test = ["Test", "Logging"]

src/error.jl

@@ -76,7 +76,7 @@ function throw_xml_error()
     if isempty(XML_GLOBAL_ERROR_STACK)
         error("unknown error of libxml2")
     elseif length(XML_GLOBAL_ERROR_STACK) > 1
-        @warn("caught $(length(XML_GLOBAL_ERROR_STACK)) errors; show the first one")
+        @warn("caught $(length(XML_GLOBAL_ERROR_STACK)) errors; showing the first one")
     end
     # DEBUG
     # for err in XML_GLOBAL_ERROR_STACK

test/runtests.jl

@@ -1,5 +1,15 @@
 using EzXML
 using Test
+using Logging: SimpleLogger, with_logger
+
+# Capture logging messages using a local logger.
+function capture_logging_messages(proc)
+    buf = IOBuffer()
+    ret = with_logger(proc, SimpleLogger(buf))
+    messages = String(take!(buf))
+    return ret, messages
+end
+
 
 # Unit tests
 # ----------
@@ -93,10 +103,13 @@ end
         &#124
         <a href="http://mbgd.genome.ad.jp/sparql/index_2015.php">To Previous Version (2015)</a>
         """)
-        @info("the following two warnings are expected:")
-        doc = readhtml(buf)
+        doc, messages = capture_logging_messages() do
+            readhtml(buf)
+        end
         @test isa(doc, EzXML.Document)
         @test nodetype(doc.node) === EzXML.HTML_DOCUMENT_NODE
+        @test occursin("Warning: XMLError: htmlParseCharRef: missing semicolon from HTML parser (code: 7, line: 2)", messages)
+        @test occursin("Warning: XMLError: htmlParseCharRef: missing semicolon from HTML parser (code: 7, line: 4)", messages)
     end
 end
 
@@ -167,8 +180,10 @@ end
         @test_throws EzXML.XMLError parsexml("abracadabra")
         @test_throws EzXML.XMLError parsexml("""<?xml version="1.0"?>""")
 
-        @info("the following warning is expected:")
-        @test_throws EzXML.XMLError parsexml("<gepa?>jgo<<<><<")
+        _, messages = capture_logging_messages() do
+            @test_throws EzXML.XMLError parsexml("<gepa?>jgo<<<><<")
+        end
+        @test occursin("caught 4 errors; showing the first one", messages)
     end
 
     @testset "HTML" begin