diff --git a/test/integration/fixtures/blocks/core__form.html b/test/integration/fixtures/blocks/core__form.html
new file mode 100644
index 00000000000000..9015fe38dd19c7
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__form.html
@@ -0,0 +1,21 @@
+<!-- wp:form {"formId":"the-form-id"} -->
+<form class="wp-block-form"><!-- wp:input-field {"label":"Name - required, inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Name - required, inline label</div><input class="wp-block-input-field" type="text" name="Name - required, inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"checkbox","label":"Checkbox - inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Checkbox - inline label</div><input class="wp-block-input-field" type="checkbox" name="Checkbox - inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"email","label":"Email - required","required":true} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Email - required</div><input class="wp-block-input-field" type="email" name="Email - required" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"textarea","label":"Textarea input"} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Textarea input</div><textarea class="wp-block-input-field" name="Textarea input" aria-required="false"></textarea></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"submit","label":"Submit"} -->
+<div class="wp-block-buttons"><div class="wp-block-button"><button class="wp-block-button__link wp-element-button">Submit</button></div></div>
+<!-- /wp:input-field --></form>
+<!-- /wp:form -->
diff --git a/test/integration/fixtures/blocks/core__form.json b/test/integration/fixtures/blocks/core__form.json
new file mode 100644
index 00000000000000..0c9f29ac87ee0c
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__form.json
@@ -0,0 +1,68 @@
+[
+	{
+		"name": "core/form",
+		"isValid": true,
+		"attributes": {
+			"action": "#",
+			"method": "post",
+			"formId": "the-form-id"
+		},
+		"innerBlocks": [
+			{
+				"name": "core/input-field",
+				"isValid": true,
+				"attributes": {
+					"type": "text",
+					"label": "Name - required, inline label",
+					"inlineLabel": true,
+					"required": true
+				},
+				"innerBlocks": []
+			},
+			{
+				"name": "core/input-field",
+				"isValid": true,
+				"attributes": {
+					"type": "checkbox",
+					"label": "Checkbox - inline label",
+					"inlineLabel": true,
+					"required": true
+				},
+				"innerBlocks": []
+			},
+			{
+				"name": "core/input-field",
+				"isValid": true,
+				"attributes": {
+					"type": "email",
+					"label": "Email - required",
+					"inlineLabel": false,
+					"required": true
+				},
+				"innerBlocks": []
+			},
+			{
+				"name": "core/input-field",
+				"isValid": true,
+				"attributes": {
+					"type": "textarea",
+					"label": "Textarea input",
+					"inlineLabel": false,
+					"required": false
+				},
+				"innerBlocks": []
+			},
+			{
+				"name": "core/input-field",
+				"isValid": true,
+				"attributes": {
+					"type": "submit",
+					"label": "Submit",
+					"inlineLabel": false,
+					"required": false
+				},
+				"innerBlocks": []
+			}
+		]
+	}
+]
diff --git a/test/integration/fixtures/blocks/core__form.parsed.json b/test/integration/fixtures/blocks/core__form.parsed.json
new file mode 100644
index 00000000000000..1cb360568ad8fb
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__form.parsed.json
@@ -0,0 +1,88 @@
+[
+	{
+		"blockName": "core/form",
+		"attrs": {
+			"formId": "the-form-id"
+		},
+		"innerBlocks": [
+			{
+				"blockName": "core/input-field",
+				"attrs": {
+					"label": "Name - required, inline label",
+					"inlineLabel": true,
+					"required": true
+				},
+				"innerBlocks": [],
+				"innerHTML": "\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Name - required, inline label</div><input class=\"wp-block-input-field\" type=\"text\" name=\"Name - required, inline label\" required aria-required=\"true\"/></label>\n",
+				"innerContent": [
+					"\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Name - required, inline label</div><input class=\"wp-block-input-field\" type=\"text\" name=\"Name - required, inline label\" required aria-required=\"true\"/></label>\n"
+				]
+			},
+			{
+				"blockName": "core/input-field",
+				"attrs": {
+					"type": "checkbox",
+					"label": "Checkbox - inline label",
+					"inlineLabel": true,
+					"required": true
+				},
+				"innerBlocks": [],
+				"innerHTML": "\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Checkbox - inline label</div><input class=\"wp-block-input-field\" type=\"checkbox\" name=\"Checkbox - inline label\" required aria-required=\"true\"/></label>\n",
+				"innerContent": [
+					"\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Checkbox - inline label</div><input class=\"wp-block-input-field\" type=\"checkbox\" name=\"Checkbox - inline label\" required aria-required=\"true\"/></label>\n"
+				]
+			},
+			{
+				"blockName": "core/input-field",
+				"attrs": {
+					"type": "email",
+					"label": "Email - required",
+					"required": true
+				},
+				"innerBlocks": [],
+				"innerHTML": "\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Email - required</div><input class=\"wp-block-input-field\" type=\"email\" name=\"Email - required\" required aria-required=\"true\"/></label>\n",
+				"innerContent": [
+					"\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Email - required</div><input class=\"wp-block-input-field\" type=\"email\" name=\"Email - required\" required aria-required=\"true\"/></label>\n"
+				]
+			},
+			{
+				"blockName": "core/input-field",
+				"attrs": {
+					"type": "textarea",
+					"label": "Textarea input"
+				},
+				"innerBlocks": [],
+				"innerHTML": "\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Textarea input</div><textarea class=\"wp-block-input-field\" name=\"Textarea input\" aria-required=\"false\"></textarea></label>\n",
+				"innerContent": [
+					"\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Textarea input</div><textarea class=\"wp-block-input-field\" name=\"Textarea input\" aria-required=\"false\"></textarea></label>\n"
+				]
+			},
+			{
+				"blockName": "core/input-field",
+				"attrs": {
+					"type": "submit",
+					"label": "Submit"
+				},
+				"innerBlocks": [],
+				"innerHTML": "\n<div class=\"wp-block-buttons\"><div class=\"wp-block-button\"><button class=\"wp-block-button__link wp-element-button\">Submit</button></div></div>\n",
+				"innerContent": [
+					"\n<div class=\"wp-block-buttons\"><div class=\"wp-block-button\"><button class=\"wp-block-button__link wp-element-button\">Submit</button></div></div>\n"
+				]
+			}
+		],
+		"innerHTML": "\n<form class=\"wp-block-form\">\n\n\n\n\n\n\n\n</form>\n",
+		"innerContent": [
+			"\n<form class=\"wp-block-form\">",
+			null,
+			"\n\n",
+			null,
+			"\n\n",
+			null,
+			"\n\n",
+			null,
+			"\n\n",
+			null,
+			"</form>\n"
+		]
+	}
+]
diff --git a/test/integration/fixtures/blocks/core__form.serialized.html b/test/integration/fixtures/blocks/core__form.serialized.html
new file mode 100644
index 00000000000000..9015fe38dd19c7
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__form.serialized.html
@@ -0,0 +1,21 @@
+<!-- wp:form {"formId":"the-form-id"} -->
+<form class="wp-block-form"><!-- wp:input-field {"label":"Name - required, inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Name - required, inline label</div><input class="wp-block-input-field" type="text" name="Name - required, inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"checkbox","label":"Checkbox - inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Checkbox - inline label</div><input class="wp-block-input-field" type="checkbox" name="Checkbox - inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"email","label":"Email - required","required":true} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Email - required</div><input class="wp-block-input-field" type="email" name="Email - required" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"textarea","label":"Textarea input"} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Textarea input</div><textarea class="wp-block-input-field" name="Textarea input" aria-required="false"></textarea></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"submit","label":"Submit"} -->
+<div class="wp-block-buttons"><div class="wp-block-button"><button class="wp-block-button__link wp-element-button">Submit</button></div></div>
+<!-- /wp:input-field --></form>
+<!-- /wp:form -->
diff --git a/test/integration/fixtures/blocks/core__input-field.html b/test/integration/fixtures/blocks/core__input-field.html
new file mode 100644
index 00000000000000..2574bc62f5c7cb
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__input-field.html
@@ -0,0 +1,19 @@
+<!-- wp:input-field {"label":"Name - required, inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Name - required, inline label</div><input class="wp-block-input-field" type="text" name="Name - required, inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"checkbox","label":"Checkbox - inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Checkbox - inline label</div><input class="wp-block-input-field" type="checkbox" name="Checkbox - inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"email","label":"Email - required","required":true} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Email - required</div><input class="wp-block-input-field" type="email" name="Email - required" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"textarea","label":"Textarea input"} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Textarea input</div><textarea class="wp-block-input-field" name="Textarea input" aria-required="false"></textarea></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"submit","label":"Submit"} -->
+<div class="wp-block-buttons"><div class="wp-block-button"><button class="wp-block-button__link wp-element-button">Submit</button></div></div>
+<!-- /wp:input-field -->
diff --git a/test/integration/fixtures/blocks/core__input-field.json b/test/integration/fixtures/blocks/core__input-field.json
new file mode 100644
index 00000000000000..488701c5558f76
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__input-field.json
@@ -0,0 +1,57 @@
+[
+	{
+		"name": "core/input-field",
+		"isValid": true,
+		"attributes": {
+			"type": "text",
+			"label": "Name - required, inline label",
+			"inlineLabel": true,
+			"required": true
+		},
+		"innerBlocks": []
+	},
+	{
+		"name": "core/input-field",
+		"isValid": true,
+		"attributes": {
+			"type": "checkbox",
+			"label": "Checkbox - inline label",
+			"inlineLabel": true,
+			"required": true
+		},
+		"innerBlocks": []
+	},
+	{
+		"name": "core/input-field",
+		"isValid": true,
+		"attributes": {
+			"type": "email",
+			"label": "Email - required",
+			"inlineLabel": false,
+			"required": true
+		},
+		"innerBlocks": []
+	},
+	{
+		"name": "core/input-field",
+		"isValid": true,
+		"attributes": {
+			"type": "textarea",
+			"label": "Textarea input",
+			"inlineLabel": false,
+			"required": false
+		},
+		"innerBlocks": []
+	},
+	{
+		"name": "core/input-field",
+		"isValid": true,
+		"attributes": {
+			"type": "submit",
+			"label": "Submit",
+			"inlineLabel": false,
+			"required": false
+		},
+		"innerBlocks": []
+	}
+]
diff --git a/test/integration/fixtures/blocks/core__input-field.parsed.json b/test/integration/fixtures/blocks/core__input-field.parsed.json
new file mode 100644
index 00000000000000..886e3e6d35ad8e
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__input-field.parsed.json
@@ -0,0 +1,94 @@
+[
+	{
+		"blockName": "core/input-field",
+		"attrs": {
+			"label": "Name - required, inline label",
+			"inlineLabel": true,
+			"required": true
+		},
+		"innerBlocks": [],
+		"innerHTML": "\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Name - required, inline label</div><input class=\"wp-block-input-field\" type=\"text\" name=\"Name - required, inline label\" required aria-required=\"true\"/></label>\n",
+		"innerContent": [
+			"\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Name - required, inline label</div><input class=\"wp-block-input-field\" type=\"text\" name=\"Name - required, inline label\" required aria-required=\"true\"/></label>\n"
+		]
+	},
+	{
+		"blockName": null,
+		"attrs": {},
+		"innerBlocks": [],
+		"innerHTML": "\n\n",
+		"innerContent": [ "\n\n" ]
+	},
+	{
+		"blockName": "core/input-field",
+		"attrs": {
+			"type": "checkbox",
+			"label": "Checkbox - inline label",
+			"inlineLabel": true,
+			"required": true
+		},
+		"innerBlocks": [],
+		"innerHTML": "\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Checkbox - inline label</div><input class=\"wp-block-input-field\" type=\"checkbox\" name=\"Checkbox - inline label\" required aria-required=\"true\"/></label>\n",
+		"innerContent": [
+			"\n<label class=\"wp-block-input-field-label is-label-inline\"><div class=\"wp-block-input-field-label__content\">Checkbox - inline label</div><input class=\"wp-block-input-field\" type=\"checkbox\" name=\"Checkbox - inline label\" required aria-required=\"true\"/></label>\n"
+		]
+	},
+	{
+		"blockName": null,
+		"attrs": {},
+		"innerBlocks": [],
+		"innerHTML": "\n\n",
+		"innerContent": [ "\n\n" ]
+	},
+	{
+		"blockName": "core/input-field",
+		"attrs": {
+			"type": "email",
+			"label": "Email - required",
+			"required": true
+		},
+		"innerBlocks": [],
+		"innerHTML": "\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Email - required</div><input class=\"wp-block-input-field\" type=\"email\" name=\"Email - required\" required aria-required=\"true\"/></label>\n",
+		"innerContent": [
+			"\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Email - required</div><input class=\"wp-block-input-field\" type=\"email\" name=\"Email - required\" required aria-required=\"true\"/></label>\n"
+		]
+	},
+	{
+		"blockName": null,
+		"attrs": {},
+		"innerBlocks": [],
+		"innerHTML": "\n\n",
+		"innerContent": [ "\n\n" ]
+	},
+	{
+		"blockName": "core/input-field",
+		"attrs": {
+			"type": "textarea",
+			"label": "Textarea input"
+		},
+		"innerBlocks": [],
+		"innerHTML": "\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Textarea input</div><textarea class=\"wp-block-input-field\" name=\"Textarea input\" aria-required=\"false\"></textarea></label>\n",
+		"innerContent": [
+			"\n<label class=\"wp-block-input-field-label\"><div class=\"wp-block-input-field-label__content\">Textarea input</div><textarea class=\"wp-block-input-field\" name=\"Textarea input\" aria-required=\"false\"></textarea></label>\n"
+		]
+	},
+	{
+		"blockName": null,
+		"attrs": {},
+		"innerBlocks": [],
+		"innerHTML": "\n\n",
+		"innerContent": [ "\n\n" ]
+	},
+	{
+		"blockName": "core/input-field",
+		"attrs": {
+			"type": "submit",
+			"label": "Submit"
+		},
+		"innerBlocks": [],
+		"innerHTML": "\n<div class=\"wp-block-buttons\"><div class=\"wp-block-button\"><button class=\"wp-block-button__link wp-element-button\">Submit</button></div></div>\n",
+		"innerContent": [
+			"\n<div class=\"wp-block-buttons\"><div class=\"wp-block-button\"><button class=\"wp-block-button__link wp-element-button\">Submit</button></div></div>\n"
+		]
+	}
+]
diff --git a/test/integration/fixtures/blocks/core__input-field.serialized.html b/test/integration/fixtures/blocks/core__input-field.serialized.html
new file mode 100644
index 00000000000000..2574bc62f5c7cb
--- /dev/null
+++ b/test/integration/fixtures/blocks/core__input-field.serialized.html
@@ -0,0 +1,19 @@
+<!-- wp:input-field {"label":"Name - required, inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Name - required, inline label</div><input class="wp-block-input-field" type="text" name="Name - required, inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"checkbox","label":"Checkbox - inline label","inlineLabel":true,"required":true} -->
+<label class="wp-block-input-field-label is-label-inline"><div class="wp-block-input-field-label__content">Checkbox - inline label</div><input class="wp-block-input-field" type="checkbox" name="Checkbox - inline label" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"email","label":"Email - required","required":true} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Email - required</div><input class="wp-block-input-field" type="email" name="Email - required" required aria-required="true"/></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"textarea","label":"Textarea input"} -->
+<label class="wp-block-input-field-label"><div class="wp-block-input-field-label__content">Textarea input</div><textarea class="wp-block-input-field" name="Textarea input" aria-required="false"></textarea></label>
+<!-- /wp:input-field -->
+
+<!-- wp:input-field {"type":"submit","label":"Submit"} -->
+<div class="wp-block-buttons"><div class="wp-block-button"><button class="wp-block-button__link wp-element-button">Submit</button></div></div>
+<!-- /wp:input-field -->