diff --git a/.github/actions/poetry_setup/action.yml b/.github/actions/poetry_setup/action.yml
new file mode 100644
index 00000000..3e2ef52f
--- /dev/null
+++ b/.github/actions/poetry_setup/action.yml
@@ -0,0 +1,64 @@
+# An action for setting up poetry install with caching.
+# Using a custom action since the default action does not
+# take poetry install groups into account.
+# Action code from:
+# https://github.com/actions/setup-python/issues/505#issuecomment-1273013236
+name: poetry-install-with-caching
+description: Poetry install with support for caching of dependency groups.
+
+inputs:
+  python-version:
+    description: Python version, supporting MAJOR.MINOR only
+    required: true
+
+  poetry-version:
+    description: Poetry version
+    required: true
+
+  install-command:
+    description: Command run for installing dependencies
+    required: false
+    default: poetry install
+
+  cache-key:
+    description: Cache key to use for manual handling of caching
+    required: true
+
+  working-directory:
+    description: Directory to run install-command in
+    required: false
+    default: ""
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/setup-python@v4
+      with:
+        python-version: ${{ inputs.python-version }}
+
+    - uses: actions/cache@v3
+      id: cache-pip
+      env:
+        SEGMENT_DOWNLOAD_TIMEOUT_MIN: "15"
+      with:
+        path: |
+          ~/.cache/pip
+        key: pip-${{ runner.os }}-${{ runner.arch }}-py-${{ inputs.python-version }}
+
+    - run: pipx install poetry==${{ inputs.poetry-version }} --python python${{ inputs.python-version }}
+      shell: bash
+
+    - uses: actions/cache@v3
+      id: cache-poetry
+      env:
+        SEGMENT_DOWNLOAD_TIMEOUT_MIN: "15"
+      with:
+        path: |
+          ~/.cache/pypoetry/virtualenvs
+          ~/.cache/pypoetry/cache
+          ~/.cache/pypoetry/artifacts
+        key: poetry-${{ runner.os }}-${{ runner.arch }}-py-${{ inputs.python-version }}-poetry-${{ inputs.poetry-version }}-${{ inputs.cache-key }}-${{ hashFiles('poetry.lock') }}
+
+    - run: ${{ inputs.install-command }}
+      working-directory: ${{ inputs.working-directory }}
+      shell: bash
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ed46af8a..ec960bb4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,15 +20,13 @@ jobs:
           - "3.11"
     steps:
       - uses: actions/checkout@v3
-      - name: Install poetry
-        run: pipx install poetry==$POETRY_VERSION
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: "./.github/actions/poetry_setup"
         with:
           python-version: ${{ matrix.python-version }}
-          cache: "poetry"
-      - name: Install dependencies
-        run: poetry install
+          poetry-version: "1.4.2"
+          cache-key: "main"
+          install-command: "poetry install"
       - name: Run unit tests
         run: |
           make test
diff --git a/.github/workflows/test_all.yml b/.github/workflows/test_all.yml
new file mode 100644
index 00000000..d914a16f
--- /dev/null
+++ b/.github/workflows/test_all.yml
@@ -0,0 +1,33 @@
+# Run unit tests with all optional packages installed.
+name: test_all
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+env:
+  POETRY_VERSION: "1.4.2"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version:
+          - "3.8"
+          - "3.9"
+          - "3.10"
+          - "3.11"
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: "./.github/actions/poetry_setup"
+        with:
+          python-version: ${{ matrix.python-version }}
+          poetry-version: "1.4.2"
+          cache-key: "extended"
+          install-command: "poetry install -E extended_testing"
+      - name: Run unit tests
+        run: |
+          make test
diff --git a/poetry.lock b/poetry.lock
index 0c0b0b72..d29d7498 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -5362,6 +5362,27 @@ gcs = ["google-cloud-storage (>=1.26.0,<2.0.0)"]
 s3 = ["boto3"]
 test = ["mock", "pytest", "pytest-coverage", "typer-cli"]
 
+[[package]]
+name = "pdfminer-six"
+version = "20221105"
+description = "PDF parser and analyzer"
+category = "main"
+optional = true
+python-versions = ">=3.6"
+files = [
+    {file = "pdfminer.six-20221105-py3-none-any.whl", hash = "sha256:1eaddd712d5b2732f8ac8486824533514f8ba12a0787b3d5fe1e686cd826532d"},
+    {file = "pdfminer.six-20221105.tar.gz", hash = "sha256:8448ab7b939d18b64820478ecac5394f482d7a79f5f7eaa7703c6c959c175e1d"},
+]
+
+[package.dependencies]
+charset-normalizer = ">=2.0.0"
+cryptography = ">=36.0.0"
+
+[package.extras]
+dev = ["black", "mypy (==0.931)", "nox", "pytest"]
+docs = ["sphinx", "sphinx-argparse"]
+image = ["Pillow"]
+
 [[package]]
 name = "pexpect"
 version = "4.8.0"
@@ -6223,6 +6244,101 @@ pyarrow = ">=10"
 [package.extras]
 tests = ["duckdb", "polars[pandas,pyarrow]", "pytest"]
 
+[[package]]
+name = "pymongo"
+version = "4.3.3"
+description = "Python driver for MongoDB <http://www.mongodb.org>"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+files = [
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+    {file = "pymongo-4.3.3-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.whl", hash = "sha256:7761cacb8745093062695b11574effea69db636c2fd0a9269a1f0183712927b4"},
+    {file = "pymongo-4.3.3-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:fd7bb378d82b88387dc10227cfd964f6273eb083e05299e9b97cbe075da12d11"},
+    {file = "pymongo-4.3.3-cp39-cp39-win32.whl", hash = "sha256:dc24d245026a72d9b4953729d31813edd4bd4e5c13622d96e27c284942d33f24"},
+    {file = "pymongo-4.3.3-cp39-cp39-win_amd64.whl", hash = "sha256:fc28e8d85d392a06434e9a934908d97e2cf453d69488d2bcd0bfb881497fd975"},
+    {file = "pymongo-4.3.3.tar.gz", hash = "sha256:34e95ffb0a68bffbc3b437f2d1f25fc916fef3df5cdeed0992da5f42fae9b807"},
+]
+
+[package.dependencies]
+dnspython = ">=1.16.0,<3.0.0"
+
+[package.extras]
+aws = ["pymongo-auth-aws (<2.0.0)"]
+encryption = ["pymongo-auth-aws (<2.0.0)", "pymongocrypt (>=1.3.0,<2.0.0)"]
+gssapi = ["pykerberos"]
+ocsp = ["certifi", "pyopenssl (>=17.2.0)", "requests (<3.0.0)", "service-identity (>=18.1.0)"]
+snappy = ["python-snappy"]
+zstd = ["zstandard"]
+
 [[package]]
 name = "pyowm"
 version = "3.3.0"
@@ -9686,6 +9802,7 @@ all = ["O365", "aleph-alpha-client", "anthropic", "arxiv", "atlassian-python-api
 azure = ["azure-core", "azure-cosmos", "azure-identity", "openai"]
 cohere = ["cohere"]
 embeddings = ["sentence-transformers"]
+extended-testing = ["pdfminer-six", "pypdf"]
 llms = ["anthropic", "cohere", "huggingface_hub", "manifest-ml", "nlpcloud", "openai", "torch", "transformers"]
 openai = ["openai"]
 qdrant = ["qdrant-client"]
@@ -9693,4 +9810,4 @@ qdrant = ["qdrant-client"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8.1,<4.0"
-content-hash = "2352db14ae75227c4d1ab34d48c74da3a16ceaeb5c5fa5df1a1dfcc5ae8e69e6"
+content-hash = "63324f95fc04b48b631353c5e1a1a2ecc1b9dc757441181d4920e9d77cd8951f"
diff --git a/pyproject.toml b/pyproject.toml
index a4dc14ac..18e4ef7e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -77,6 +77,7 @@ pexpect = {version = "^4.8.0", optional = true}
 pyvespa = {version = "^0.33.0", optional = true}
 O365 = {version = "^2.0.26", optional = true}
 jq = {version = "^1.4.1", optional = true}
+pdfminer-six = {version = "^20221105", optional = true}
 
 
 [tool.poetry.group.docs.dependencies]
@@ -161,6 +162,8 @@ cohere = ["cohere"]
 embeddings = ["sentence-transformers"]
 azure = ["azure-identity", "azure-cosmos", "openai", "azure-core"]
 all = ["anthropic", "cohere", "openai", "nlpcloud", "huggingface_hub", "jina", "manifest-ml", "elasticsearch", "opensearch-py", "google-search-results", "faiss-cpu", "sentence-transformers", "transformers", "spacy", "nltk", "wikipedia", "beautifulsoup4", "tiktoken", "torch", "jinja2", "pinecone-client", "pinecone-text", "weaviate-client", "redis", "google-api-python-client", "wolframalpha", "qdrant-client", "tensorflow-text", "pypdf", "networkx", "nomic", "aleph-alpha-client", "deeplake", "pgvector", "psycopg2-binary", "boto3", "pyowm", "pytesseract", "html2text", "atlassian-python-api", "gptcache", "duckduckgo-search", "arxiv", "azure-identity", "clickhouse-connect", "azure-cosmos", "lancedb", "lark", "pexpect", "pyvespa", "O365", "jq"]
+# An extra used to be able to add extended testing.
+extended_testing = ["pypdf", "pdfminer.six"]
 
 [tool.ruff]
 select = [
diff --git a/tests/data.py b/tests/data.py
new file mode 100644
index 00000000..228a9b21
--- /dev/null
+++ b/tests/data.py
@@ -0,0 +1,10 @@
+"""Module defines common test data."""
+from pathlib import Path
+
+_THIS_DIR = Path(__file__).parent
+
+_EXAMPLES_DIR = _THIS_DIR / "integration_tests" / "examples"
+
+# Paths to test PDF files
+HELLO_PDF = _EXAMPLES_DIR / "hello.pdf"
+LAYOUT_PARSER_PAPER_PDF = _EXAMPLES_DIR / "layout-parser-paper.pdf"
diff --git a/tests/unit_tests/document_loader/parsers/test_pdf_parsers.py b/tests/unit_tests/document_loader/parsers/test_pdf_parsers.py
new file mode 100644
index 00000000..4063cece
--- /dev/null
+++ b/tests/unit_tests/document_loader/parsers/test_pdf_parsers.py
@@ -0,0 +1,79 @@
+"""Tests for the various PDF parsers."""
+from typing import Iterator
+
+import pytest
+
+from langchain.document_loaders.base import BaseBlobParser
+from langchain.document_loaders.blob_loaders import Blob
+from langchain.document_loaders.parsers.pdf import (
+    PDFMinerParser,
+    PyMuPDFParser,
+    PyPDFium2Parser,
+    PyPDFParser,
+)
+from tests.data import HELLO_PDF, LAYOUT_PARSER_PAPER_PDF
+
+
+def _assert_with_parser(parser: BaseBlobParser, splits_by_page: bool = True) -> None:
+    """Standard tests to verify that the given parser works.
+
+    Args:
+        parser (BaseBlobParser): The parser to test.
+        splits_by_page (bool): Whether the parser splits by page or not by default.
+    """
+    blob = Blob.from_path(HELLO_PDF)
+    doc_generator = parser.lazy_parse(blob)
+    assert isinstance(doc_generator, Iterator)
+    docs = list(doc_generator)
+    assert len(docs) == 1
+    page_content = docs[0].page_content
+    assert isinstance(page_content, str)
+    # The different parsers return different amount of whitespace, so using
+    # startswith instead of equals.
+    assert docs[0].page_content.startswith("Hello world!")
+
+    blob = Blob.from_path(LAYOUT_PARSER_PAPER_PDF)
+    doc_generator = parser.lazy_parse(blob)
+    assert isinstance(doc_generator, Iterator)
+    docs = list(doc_generator)
+
+    if splits_by_page:
+        assert len(docs) == 16
+    else:
+        assert len(docs) == 1
+    # Test is imprecise since the parsers yield different parse information depending
+    # on configuration. Each parser seems to yield a slightly different result
+    # for this page!
+    assert "LayoutParser" in docs[0].page_content
+    metadata = docs[0].metadata
+
+    assert metadata["source"] == str(LAYOUT_PARSER_PAPER_PDF)
+
+    if splits_by_page:
+        assert metadata["page"] == 0
+
+
+@pytest.mark.requires("fitz")
+def test_pymupdf_loader() -> None:
+    """Test PyMuPDF loader."""
+    _assert_with_parser(PyMuPDFParser())
+
+
+@pytest.mark.requires("pypdf")
+def test_pypdf_parser() -> None:
+    """Test PyPDF parser."""
+    _assert_with_parser(PyPDFParser())
+
+
+@pytest.mark.requires("pdfminer")
+def test_pdfminer_parser() -> None:
+    """Test PDFMiner parser."""
+    # Does not follow defaults to split by page.
+    _assert_with_parser(PDFMinerParser(), splits_by_page=False)
+
+
+@pytest.mark.requires("pypdfium2")
+def test_pypdfium2_parser() -> None:
+    """Test PyPDFium2 parser."""
+    # Does not follow defaults to split by page.
+    _assert_with_parser(PyPDFium2Parser())
diff --git a/tests/unit_tests/document_loader/parsers/test_public_api.py b/tests/unit_tests/document_loader/parsers/test_public_api.py
new file mode 100644
index 00000000..52ce7e8e
--- /dev/null
+++ b/tests/unit_tests/document_loader/parsers/test_public_api.py
@@ -0,0 +1,11 @@
+from langchain.document_loaders.parsers import __all__
+
+
+def test_parsers_public_api_correct() -> None:
+    """Test public API of parsers for breaking changes."""
+    assert set(__all__) == {
+        "PyPDFParser",
+        "PDFMinerParser",
+        "PyMuPDFParser",
+        "PyPDFium2Parser",
+    }