diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index a9bbdb9..d6bb65c 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,6 +4,10 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      pip-dependencies:
+        patterns:
+          - "*"
     # Raise pull requests for version updates
     # to pip against the `develop` branch
     target-branch: "develop"
@@ -11,4 +15,8 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      gha-dependencies:
+        patterns:
+          - "*"
     target-branch: "develop"
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0d2b510..21d3eb1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,4 +1,9 @@
----
+ci:
+  autoupdate_schedule: "monthly" # Like dependabot
+  autoupdate_commit_msg: "chore: update pre-commit hooks"
+  autoupdate_branch: "develop"
+  autofix_prs: false # Comment "pre-commit.ci autofix" on a PR to trigger
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.6.0
@@ -15,7 +20,7 @@ repos:
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: 'v0.4.2'
+    rev: 'v0.4.10'
     hooks:
       - id: ruff
         args: [ "--fix" ]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ff1514..fa6b8be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [unreleased]
+
+### Added
+- [issue #127](https://github.com/nasa/batchee/issues/127): Group dependabot updates into fewer PRs
+- [issue #129](https://github.com/nasa/batchee/issues/129): Add autoupdate schedule for pre-commit
+### Changed
+- [issue #128](https://github.com/nasa/batchee/issues/128): Increase continuous integration/unit test coverage
+### Deprecated
+### Removed
+### Fixed
+
 ## [1.1.0]
 
 ### Added
diff --git a/batcher/harmony/service_adapter.py b/batcher/harmony/service_adapter.py
index 8723d57..b35ac51 100644
--- a/batcher/harmony/service_adapter.py
+++ b/batcher/harmony/service_adapter.py
@@ -125,7 +125,7 @@ def process_catalog(self, catalog: pystac.Catalog) -> list[pystac.Catalog]:
                         _get_output_date_range([item]),
                     )
                     output_item.add_asset(
-                        f"data_{idx}",
+                        "data",
                         Asset(
                             _get_item_url(item),
                             title=_get_item_url(item),
diff --git a/batcher/tempo_filename_parser.py b/batcher/tempo_filename_parser.py
index dc7a346..ceb7c8a 100644
--- a/batcher/tempo_filename_parser.py
+++ b/batcher/tempo_filename_parser.py
@@ -28,7 +28,6 @@
 import logging
 import re
 from argparse import ArgumentParser
-from pathlib import Path
 
 default_logger = logging.getLogger(__name__)
 
@@ -99,7 +98,7 @@ def main() -> list[list[str]]:
     if args.verbose:
         logging.basicConfig(level=logging.DEBUG)
 
-    input_filenames = [str(Path(f).resolve()) for f in args.file_names]
+    input_filenames = args.file_names
 
     batch_indices = get_batch_indices(input_filenames)
     unique_category_indices: list[int] = sorted(set(batch_indices), key=batch_indices.index)
diff --git a/poetry.lock b/poetry.lock
index f3e3abb..3c27217 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -48,17 +48,17 @@ uvloop = ["uvloop (>=0.15.2)"]
 
 [[package]]
 name = "boto3"
-version = "1.34.95"
+version = "1.34.131"
 description = "The AWS SDK for Python"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "boto3-1.34.95-py3-none-any.whl", hash = "sha256:e836b71d79671270fccac0a4d4c8ec239a6b82ea47c399b64675aa597d0ee63b"},
-    {file = "boto3-1.34.95.tar.gz", hash = "sha256:decf52f8d5d8a1b10c9ff2a0e96ee207ed79e33d2e53fdf0880a5cbef70785e0"},
+    {file = "boto3-1.34.131-py3-none-any.whl", hash = "sha256:05e388cb937e82be70bfd7eb0c84cf8011ff35cf582a593873ac21675268683b"},
+    {file = "boto3-1.34.131.tar.gz", hash = "sha256:dab8f72a6c4e62b4fd70da09e08a6b2a65ea2115b27dd63737142005776ef216"},
 ]
 
 [package.dependencies]
-botocore = ">=1.34.95,<1.35.0"
+botocore = ">=1.34.131,<1.35.0"
 jmespath = ">=0.7.1,<2.0.0"
 s3transfer = ">=0.10.0,<0.11.0"
 
@@ -67,13 +67,13 @@ crt = ["botocore[crt] (>=1.21.0,<2.0a0)"]
 
 [[package]]
 name = "botocore"
-version = "1.34.95"
+version = "1.34.131"
 description = "Low-level, data-driven core of boto 3."
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "botocore-1.34.95-py3-none-any.whl", hash = "sha256:ead5823e0dd6751ece5498cb979fd9abf190e691c8833bcac6876fd6ca261fa7"},
-    {file = "botocore-1.34.95.tar.gz", hash = "sha256:6bd76a2eadb42b91fa3528392e981ad5b4dfdee3968fa5b904278acf6cbf15ff"},
+    {file = "botocore-1.34.131-py3-none-any.whl", hash = "sha256:13b011d7b206ce00727dcee26548fa3b550db9046d5a0e90ac25a6e6c8fde6ef"},
+    {file = "botocore-1.34.131.tar.gz", hash = "sha256:502ddafe1d627fcf1e4c007c86454e5dd011dba7c58bd8e8a5368a79f3e387dc"},
 ]
 
 [package.dependencies]
@@ -82,17 +82,17 @@ python-dateutil = ">=2.1,<3.0.0"
 urllib3 = {version = ">=1.25.4,<2.2.0 || >2.2.0,<3", markers = "python_version >= \"3.10\""}
 
 [package.extras]
-crt = ["awscrt (==0.20.9)"]
+crt = ["awscrt (==0.20.11)"]
 
 [[package]]
 name = "certifi"
-version = "2024.2.2"
+version = "2024.6.2"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "certifi-2024.2.2-py3-none-any.whl", hash = "sha256:dc383c07b76109f368f6106eee2b593b04a011ea4d55f652c6ca24a754d1cdd1"},
-    {file = "certifi-2024.2.2.tar.gz", hash = "sha256:0569859f95fc761b18b45ef421b1290a0f65f147e92a1e5eb3e635f9a5e4e66f"},
+    {file = "certifi-2024.6.2-py3-none-any.whl", hash = "sha256:ddc6c8ce995e6987e7faf5e3f1b02b302836a0e5d98ece18392cb1a36c72ad56"},
+    {file = "certifi-2024.6.2.tar.gz", hash = "sha256:3cd43f1c6fa7dedc5899d69d3ad0398fd018ad1a17fba83ddaf78aa46c747516"},
 ]
 
 [[package]]
@@ -285,63 +285,63 @@ files = [
 
 [[package]]
 name = "coverage"
-version = "7.5.0"
+version = "7.5.4"
 description = "Code coverage measurement for Python"
 optional = false
 python-versions = ">=3.8"
 files = [
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 [package.dependencies]
@@ -380,13 +380,13 @@ test = ["pytest (>=6)"]
 
 [[package]]
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+version = "1.0.27"
 description = "A library for Python-based Harmony services to parse incoming messages, fetch data, stage data, and call back to Harmony"
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 python-versions = ">=3.8"
 files = [
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 [package.dependencies]
@@ -491,13 +491,13 @@ files = [
 
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+version = "24.1"
 description = "Core utilities for Python packages"
 optional = false
-python-versions = ">=3.7"
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 [[package]]
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 python-versions = ">=3.8"
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+version = "8.2.2"
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 python-versions = ">=3.8"
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+    {file = "ruff-0.4.10-py3-none-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:9e9b6fb3a37b772628415b00c4fc892f97954275394ed611056a4b8a2631365e"},
+    {file = "ruff-0.4.10-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:0f54c481b39a762d48f64d97351048e842861c6662d63ec599f67d515cb417f6"},
+    {file = "ruff-0.4.10-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:67fe086b433b965c22de0b4259ddfe6fa541c95bf418499bedb9ad5fb8d1c631"},
+    {file = "ruff-0.4.10-py3-none-musllinux_1_2_armv7l.whl", hash = "sha256:acfaaab59543382085f9eb51f8e87bac26bf96b164839955f244d07125a982ef"},
+    {file = "ruff-0.4.10-py3-none-musllinux_1_2_i686.whl", hash = "sha256:3cea07079962b2941244191569cf3a05541477286f5cafea638cd3aa94b56815"},
+    {file = "ruff-0.4.10-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:338a64ef0748f8c3a80d7f05785930f7965d71ca260904a9321d13be24b79695"},
+    {file = "ruff-0.4.10-py3-none-win32.whl", hash = "sha256:ffe3cd2f89cb54561c62e5fa20e8f182c0a444934bf430515a4b422f1ab7b7ca"},
+    {file = "ruff-0.4.10-py3-none-win_amd64.whl", hash = "sha256:67f67cef43c55ffc8cc59e8e0b97e9e60b4837c8f21e8ab5ffd5d66e196e25f7"},
+    {file = "ruff-0.4.10-py3-none-win_arm64.whl", hash = "sha256:dd1fcee327c20addac7916ca4e2653fbbf2e8388d8a6477ce5b4e986b68ae6c0"},
+    {file = "ruff-0.4.10.tar.gz", hash = "sha256:3aa4f2bc388a30d346c56524f7cacca85945ba124945fe489952aadb6b5cd804"},
 ]
 
 [[package]]
@@ -749,24 +749,24 @@ files = [
 
 [[package]]
 name = "typing-extensions"
-version = "4.11.0"
+version = "4.12.2"
 description = "Backported and Experimental Type Hints for Python 3.8+"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "typing_extensions-4.11.0-py3-none-any.whl", hash = "sha256:c1f94d72897edaf4ce775bb7558d5b79d8126906a14ea5ed1635921406c0387a"},
-    {file = "typing_extensions-4.11.0.tar.gz", hash = "sha256:83f085bd5ca59c80295fc2a82ab5dac679cbe02b9f33f7d83af68e241bea51b0"},
+    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
+    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]
 
 [[package]]
 name = "urllib3"
-version = "1.26.18"
+version = "1.26.19"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
 files = [
-    {file = "urllib3-1.26.18-py2.py3-none-any.whl", hash = "sha256:34b97092d7e0a3a8cf7cd10e386f401b3737364026c45e622aa02903dffe0f07"},
-    {file = "urllib3-1.26.18.tar.gz", hash = "sha256:f8ecc1bba5667413457c529ab955bf8c67b45db799d159066261719e328580a0"},
+    {file = "urllib3-1.26.19-py2.py3-none-any.whl", hash = "sha256:37a0344459b199fce0e80b0d3569837ec6b6937435c5244e7fd73fa6006830f3"},
+    {file = "urllib3-1.26.19.tar.gz", hash = "sha256:3e3d753a8618b86d7de333b4223005f68720bcd6a7d2bcb9fbd2229ec7c1e429"},
 ]
 
 [package.extras]
diff --git a/pyproject.toml b/pyproject.toml
index b2c93ba..bfa7bff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "batchee"
-version = "1.1.0"
+version = "1.2.0rc1"
 description = "Determine how to group together input files into batches for subsequent concatenation"
 authors = ["Daniel Kaufman <daniel.kaufman@nasa.gov>"]
 readme = "README.md"
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..bdfc664
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,23 @@
+from pathlib import Path
+
+import pytest
+
+
+def pytest_addoption(parser):
+    """Sets up optional argument to keep temporary testing directory."""
+    parser.addoption(
+        "--keep-tmp",
+        action="store_true",
+        help="Keep temporary directory after testing. Useful for debugging.",
+    )
+
+
+@pytest.fixture(scope="class")
+def pass_options(request):
+    """Adds optional argument to a test class."""
+    request.cls.KEEP_TMP = request.config.getoption("--keep-tmp")
+
+
+@pytest.fixture(scope="function", autouse=True)
+def temp_output_dir(tmpdir_factory) -> Path:
+    return Path(tmpdir_factory.mktemp("tmp-"))
diff --git a/tests/data/harmony/message.json b/tests/data/harmony/message.json
new file mode 100644
index 0000000..21eb885
--- /dev/null
+++ b/tests/data/harmony/message.json
@@ -0,0 +1,16 @@
+{
+    "sources": [{
+        "collection": "C1234088182-EEDTEST"
+    }],
+    "format": {
+        "mime": "application/x-netcdf4"
+    },
+    "subset": {},
+    "requestId": "00001111-2222-3333-4444-555566667777",
+    "user": "jdoe",
+    "client": "harmony-example",
+    "isSynchronous": false,
+    "stagingLocation": "s3://example-bucket/public/some-org/some-service/some-uuid/",
+    "callback": "http://localhost/some-path",
+    "version": "0.10.0"
+}
diff --git a/tests/data/harmony/source/catalog.json b/tests/data/harmony/source/catalog.json
new file mode 100644
index 0000000..fd99944
--- /dev/null
+++ b/tests/data/harmony/source/catalog.json
@@ -0,0 +1,48 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "cfc32383-cfd1-4e43-8d5f-55f539b6fa59",
+  "links": [
+    {
+      "rel": "harmony_source",
+      "href": "https://cmr.uat.earthdata.nasa.gov/search/concepts/C1234088182-EEDTEST"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S012G01.json",
+      "type": "application/json",
+      "title": "granule_S012G01"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S012G02.json",
+      "type": "application/json",
+      "title": "granule_S012G02"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S013G01.json",
+      "type": "application/json",
+      "title": "granule_S013G01"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S013G02.json",
+      "type": "application/json",
+      "title": "granule_S013G02"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S014G01.json",
+      "type": "application/json",
+      "title": "granule_S014G01"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S014G02.json",
+      "type": "application/json",
+      "title": "granule_S014G02"
+    }
+  ],
+  "description": "CMR Granules for C1234088182-EEDTEST batch 1"
+}
diff --git a/tests/data/harmony/source/catalog0.json b/tests/data/harmony/source/catalog0.json
new file mode 100644
index 0000000..009421c
--- /dev/null
+++ b/tests/data/harmony/source/catalog0.json
@@ -0,0 +1,36 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "cfc32383-cfd1-4e43-8d5f-55f539b6fa59",
+  "links": [
+    {
+      "rel": "harmony_source",
+      "href": "https://cmr.uat.earthdata.nasa.gov/search/concepts/C1234088182-EEDTEST"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S012G01.json",
+      "type": "application/json",
+      "title": "granule_S012G01"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S012G02.json",
+      "type": "application/json",
+      "title": "granule_S012G02"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S013G01.json",
+      "type": "application/json",
+      "title": "granule_S013G01"
+    },
+    {
+      "rel": "next",
+      "href": "tests/data/harmony/source/catalog1.json",
+      "type": "application/json",
+      "title": "Next page"
+    }
+  ],
+  "description": "CMR Granules for C1234088182-EEDTEST batch 1"
+}
diff --git a/tests/data/harmony/source/catalog1.json b/tests/data/harmony/source/catalog1.json
new file mode 100644
index 0000000..c844b16
--- /dev/null
+++ b/tests/data/harmony/source/catalog1.json
@@ -0,0 +1,36 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "cfc32383-cfd1-4e43-8d5f-55f539b6fa59",
+  "links": [
+    {
+      "rel": "harmony_source",
+      "href": "https://cmr.uat.earthdata.nasa.gov/search/concepts/C1234088182-EEDTEST"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S013G02.json",
+      "type": "application/json",
+      "title": "granule_S013G02"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S014G01.json",
+      "type": "application/json",
+      "title": "granule_S014G01"
+    },
+    {
+      "rel": "item",
+      "href": "./granule_S014G02.json",
+      "type": "application/json",
+      "title": "granule_S014G02"
+    },
+    {
+      "rel": "prev",
+      "href": "tests/data/harmony/source/catalog0.json",
+      "type": "application/json",
+      "title": "Previous page"
+    }
+  ],
+  "description": "CMR Granules for C1234088182-EEDTEST batch 2"
+}
diff --git a/tests/data/harmony/source/granule_S012G01.json b/tests/data/harmony/source/granule_S012G01.json
new file mode 100644
index 0000000..f468f54
--- /dev/null
+++ b/tests/data/harmony/source/granule_S012G01.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "51d02b24-d00e-4640-9887-05f98f6b96d8",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-02T00:00:00.000Z",
+    "end_datetime": "2020-01-02T23:59:59.000Z"
+  },
+  "bbox": [1, 3, 1, 3],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120101Z_S012G01.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120101Z_S012G01.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/data/harmony/source/granule_S012G02.json b/tests/data/harmony/source/granule_S012G02.json
new file mode 100644
index 0000000..1d25a15
--- /dev/null
+++ b/tests/data/harmony/source/granule_S012G02.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "21eb7dc5-7a9d-4374-9a88-12451ba653ef",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-03T00:00:00.000Z",
+    "end_datetime": "2020-01-03T23:59:59.000Z"
+  },
+  "bbox": [-1, -3, -1, -3],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120107Z_S012G02.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120107Z_S012G02.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/data/harmony/source/granule_S013G01.json b/tests/data/harmony/source/granule_S013G01.json
new file mode 100644
index 0000000..c22cbc2
--- /dev/null
+++ b/tests/data/harmony/source/granule_S013G01.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "dc07a25a-54bd-4389-97b6-c1d68cf0d586",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-05T00:00:00.000Z",
+    "end_datetime": "2020-01-05T23:59:59.000Z"
+  },
+  "bbox": [-4, -2, -4, 2],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120202Z_S013G01.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120202Z_S013G01.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/data/harmony/source/granule_S013G02.json b/tests/data/harmony/source/granule_S013G02.json
new file mode 100644
index 0000000..98d22f9
--- /dev/null
+++ b/tests/data/harmony/source/granule_S013G02.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "53cdf09b-4004-4405-9363-f93455a11c2f",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-04T00:00:00.000Z",
+    "end_datetime": "2020-01-04T23:59:59.000Z"
+  },
+  "bbox": [4, 2, 4, 2],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120209Z_S013G02.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120209Z_S013G02.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/data/harmony/source/granule_S014G01.json b/tests/data/harmony/source/granule_S014G01.json
new file mode 100644
index 0000000..8800f8a
--- /dev/null
+++ b/tests/data/harmony/source/granule_S014G01.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "349b5f4a-34ab-4b0d-ae00-b55fe3d166fb",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-05T00:00:00.000Z",
+    "end_datetime": "2020-01-05T23:59:59.000Z"
+  },
+  "bbox": [-5, -3, -5, 3],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120303Z_S014G01.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120303Z_S014G01.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/data/harmony/source/granule_S014G02.json b/tests/data/harmony/source/granule_S014G02.json
new file mode 100644
index 0000000..6f6dffc
--- /dev/null
+++ b/tests/data/harmony/source/granule_S014G02.json
@@ -0,0 +1,49 @@
+{
+  "stac_version": "1.0.0-beta.2",
+  "stac_extensions": [],
+  "id": "cb0271ad-05a9-4138-8bfb-fa6b83fbe6fa",
+  "type": "Feature",
+  "links": [],
+  "properties": {
+    "start_datetime": "2020-01-05T00:00:00.000Z",
+    "end_datetime": "2020-01-05T23:59:59.000Z"
+  },
+  "bbox": [5, 3, 5, 3],
+  "geometry": {
+    "type": "Polygon",
+    "coordinates": [
+      [
+        [
+          -179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          89.95
+        ],
+        [
+          179.95,
+          89.95
+        ],
+        [
+          179.95,
+          -89.95
+        ],
+        [
+          -179.95,
+          -89.95
+        ]
+      ]
+    ]
+  },
+  "assets": {
+    "data": {
+      "href": "file://tests/data/harmony/granules/TEMPO_NO2_L2_V03_20240601T120310Z_S014G02.nc",
+      "title": "TEMPO_NO2_L2_V03_20240601T120310Z_S014G02.nc",
+      "type": "application/x-netcdf4",
+      "roles": [
+        "data"
+      ]
+    }
+  }
+}
diff --git a/tests/test_filename_grouping.py b/tests/test_filename_grouping.py
index 83ae365..368e168 100644
--- a/tests/test_filename_grouping.py
+++ b/tests/test_filename_grouping.py
@@ -1,3 +1,7 @@
+import sys
+from unittest.mock import patch
+
+import batcher.tempo_filename_parser
 from batcher.tempo_filename_parser import get_batch_indices
 
 example_filenames = [
@@ -14,3 +18,13 @@ def test_grouping():
     results = get_batch_indices(example_filenames)
 
     assert results == [0, 0, 0, 1, 1, 1]
+
+
+def test_main_cli():
+    test_args = [batcher.tempo_filename_parser.__file__, "-v"]
+    test_args.extend(example_filenames)
+
+    with patch.object(sys, "argv", test_args):
+        grouped_names = batcher.tempo_filename_parser.main()
+
+    assert grouped_names == [example_filenames[0:3], example_filenames[3:6]]
diff --git a/tests/test_harmony_adapter.py b/tests/test_harmony_adapter.py
new file mode 100644
index 0000000..2726a6e
--- /dev/null
+++ b/tests/test_harmony_adapter.py
@@ -0,0 +1,101 @@
+import json
+import sys
+from os import environ
+from pathlib import Path
+from unittest.mock import patch
+from urllib.parse import urlsplit
+
+import pytest
+
+import batcher.harmony.cli
+
+
+@pytest.mark.usefixtures("pass_options")
+class TestBatching:
+    __test_path = Path(__file__).parent.resolve()
+    __data_path = __test_path.joinpath("data")
+    __harmony_path = __data_path.joinpath("harmony")
+
+    def test_service_invoke(self, temp_output_dir):
+        in_message_path = self.__harmony_path.joinpath("message.json")
+        in_message_data = in_message_path.read_text()
+
+        # test with both paged catalogs and un-paged catalogs
+        for in_catalog_name in ["catalog.json", "catalog0.json"]:
+
+            in_catalog_path = self.__harmony_path.joinpath("source", in_catalog_name)
+
+            test_args = [
+                batcher.harmony.cli.__file__,
+                "--harmony-action",
+                "invoke",
+                "--harmony-input",
+                in_message_data,
+                "--harmony-source",
+                str(in_catalog_path),
+                "--harmony-metadata-dir",
+                str(temp_output_dir),
+                "--harmony-data-location",
+                temp_output_dir.as_uri(),
+            ]
+
+            test_env = {
+                "ENV": "dev",
+                "OAUTH_CLIENT_ID": "",
+                "OAUTH_UID": "",
+                "OAUTH_PASSWORD": "",
+                "OAUTH_REDIRECT_URI": "",
+                "STAGING_PATH": "",
+                "STAGING_BUCKET": "",
+            }
+
+            with patch.object(sys, "argv", test_args), patch.dict(environ, test_env):
+                batcher.harmony.cli.main()
+
+            # Open the outputs
+            out_batch_catalog_path = temp_output_dir.joinpath("batch-catalogs.json")
+            out_batch_catalogs = json.loads(out_batch_catalog_path.read_text())
+
+            # Go through each batched catalog
+            batched_files = {0: [], 1: [], 2: []}
+            for batch_index, catalog in enumerate(out_batch_catalogs):
+                out_catalog_path = temp_output_dir.joinpath(catalog)
+                out_catalog = json.loads(out_catalog_path.read_text())
+
+                for item_meta in out_catalog["links"]:
+                    if item_meta["rel"] == "item":
+                        item_path = temp_output_dir.joinpath(item_meta["href"]).resolve()
+
+                        # -- Item Verification --
+                        item = json.loads(item_path.read_text())
+                        properties = item["properties"]
+                        assert item["bbox"]
+                        assert properties["start_datetime"]
+                        assert properties["end_datetime"]
+
+                        # -- Asset Verification --
+                        data = item["assets"]["data"]
+
+                        # Sanity checks on metadata
+                        assert data["type"] == "application/x-netcdf4"
+                        assert data["roles"] == ["data"]
+
+                        batched_files[batch_index].append(Path(urlsplit(data["href"]).path).stem)
+
+            # -- batch file list verification --
+            files_dict = {
+                0: [
+                    "TEMPO_NO2_L2_V03_20240601T120101Z_S012G01",
+                    "TEMPO_NO2_L2_V03_20240601T120107Z_S012G02",
+                ],
+                1: [
+                    "TEMPO_NO2_L2_V03_20240601T120202Z_S013G01",
+                    "TEMPO_NO2_L2_V03_20240601T120209Z_S013G02",
+                ],
+                2: [
+                    "TEMPO_NO2_L2_V03_20240601T120303Z_S014G01",
+                    "TEMPO_NO2_L2_V03_20240601T120310Z_S014G02",
+                ],
+            }
+
+            assert batched_files == files_dict