Add additional comment test cases

Some of these fail in HCL1 fmt

hclwrite/format_test.go

@@ -304,6 +304,102 @@ zebra = "striped" # baz
 𝒜      = 1         # foo
 bungle = "🇬🇧"       # baz
 zebra  = "striped" # baz
+`,
+		},
+		{
+			`
+foo {
+# ...
+}
+`,
+			`
+foo {
+  # ...
+}
+`,
+		},
+		{
+			`
+foo = {
+# ...
+}
+`,
+			`
+foo = {
+  # ...
+}
+`,
+		},
+		{
+			`
+foo = [
+# ...
+]
+`,
+			`
+foo = [
+  # ...
+]
+`,
+		},
+		{
+			`
+foo = [{
+# ...
+}]
+`,
+			`
+foo = [{
+  # ...
+}]
+`,
+		},
+		{
+			`
+foo {
+bar {
+# ...
+}
+}
+`,
+			`
+foo {
+  bar {
+    # ...
+  }
+}
+`,
+		},
+		{
+			`
+foo {
+bar = {
+# ...
+}
+}
+`,
+			`
+foo {
+  bar = {
+    # ...
+  }
+}
+`,
+		},
+		{
+			`
+foo {
+bar = [
+# ...
+]
+}
+`,
+			`
+foo {
+  bar = [
+    # ...
+  ]
+}
 `,
 		},
 	}