diff --git a/cli/cmd/cmd_convert.go b/cli/cmd/cmd_convert.go
index e1c441b..61f7e0e 100644
--- a/cli/cmd/cmd_convert.go
+++ b/cli/cmd/cmd_convert.go
@@ -30,7 +30,6 @@ func (cli *CLI) convert(input []byte) ([]error, error) {
 
 	conv := converter.NewConverter(
 		converter.WithPlugins(
-			// TODO: there should be a golden file test for functionality that needs the base plugin
 			base.NewBasePlugin(),
 			commonmark.NewCommonmarkPlugin(
 				commonmark.WithStrongDelimiter(cli.config.strongDelimiter),
diff --git a/cli/cmd/exec_test.go b/cli/cmd/exec_test.go
index 32d3328..a7d1811 100644
--- a/cli/cmd/exec_test.go
+++ b/cli/cmd/exec_test.go
@@ -272,6 +272,18 @@ func TestExecute(t *testing.T) {
 				inputArgs:  []string{"html2markdown", `--opt-strong-delimiter`, `__`},
 			},
 		},
+		{
+			desc: "[convert] collapse",
+
+			input: CLIInput{
+				modeStdin:  modePipe,
+				modeStdout: modePipe,
+				modeStderr: modePipe,
+
+				inputStdin: []byte("<p>Some  <strong>   bold   </strong>  text</p>"),
+				inputArgs:  []string{"html2markdown"},
+			},
+		},
 
 		// - - - - - validation of options - - - - - //
 		{
diff --git a/cli/cmd/testdata/TestExecute/[convert]_collapse/stderr.golden b/cli/cmd/testdata/TestExecute/[convert]_collapse/stderr.golden
new file mode 100644
index 0000000..e69de29
diff --git a/cli/cmd/testdata/TestExecute/[convert]_collapse/stdout.golden b/cli/cmd/testdata/TestExecute/[convert]_collapse/stdout.golden
new file mode 100644
index 0000000..813aa84
--- /dev/null
+++ b/cli/cmd/testdata/TestExecute/[convert]_collapse/stdout.golden
@@ -0,0 +1 @@
+Some **bold** text