diff --git a/src/garageS3.jl b/src/garageS3.jl
index 7086955..a99484d 100644
--- a/src/garageS3.jl
+++ b/src/garageS3.jl
@@ -13,11 +13,11 @@ using AWSS3
 # this file use local AWS config
 
 """ Example
-storage = GeneralUtils.GarageStorage(
+storage1 = GeneralUtils.GarageStorage(
   "https://s3-api.yiem.cc",
   "GKb080154a2e5b19100b1b2c6e",     # key ID  (create at garage-ui.yiem.cc)
   "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",   # key ID's secret key
-  "sommpanion-s3"
+  "testbucket"
 )
 
 # Safe to run inside concurrent HTTP handlers (e.g., Oxygen.jl, HTTP.jl)
@@ -30,7 +30,7 @@ println("Bucket keys: ", key)
 
 # test with curl
 curl -v \
-  -H 'Host: sommpanion-s3.s3-web.yiem.cc' \
+  -H 'Host: testbucket.s3-web.yiem.cc' \
   http://192.168.88.106:3902/users-1002.json
 
 # test with API
@@ -64,23 +64,6 @@ AWS.check_credentials(c::SimpleCredentials) = c
 AWS.region(aws::GarageConfig) = aws.region
 AWS.credentials(aws::GarageConfig) = aws.credentials
 
-""" Generate the base URL for a Garage S3 service request.
-
-# Arguments
-- `aws::GarageConfig`
-  The Garage configuration containing the endpoint.
-- `service::String`
-  The AWS service name (e.g., `"s3"`).
-- `region::String`
-  The AWS region string.
-
-# Return
-- `String`: The stripped endpoint URL (trailing slashes removed).
-"""
-function AWS.generate_service_url(aws::GarageConfig, service::String, region::String)
-    return strip(aws.endpoint, '/')
-end
-
 """ Generate the full service URL including the resource path for a Garage S3 request.
 
 # Arguments
@@ -183,7 +166,7 @@ function (pf::put_file)(key::String, data::Union{String, Vector{UInt8}}
   println("Successfully uploaded: ", key)
 
   # object url
-  api = "$(storage.config.endpoint)/$(storage.bucket)/$key"
+  api = "$(pf.storage.config.endpoint)/$(pf.storage.bucket)/$key"
 
   # file download URL using browser
   web = replace(api, "s3-api" => "s3-web")
diff --git a/test/runtests.jl b/test/runtests.jl
index f415525..0ce41a2 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,39 +1,302 @@
 using Test
-using GeneralUtils: detect_keyword
+using GeneralUtils
+using GeneralUtils.garageS3
+using AWS
+using Random: randstring
+using UUIDs: uuid4
+
+@testset "garageS3.jl" begin
+
+    # --- SimpleCredentials ---
+
+    @testset "SimpleCredentials construction" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("AKIAIOSFODNN7EXAMPLE", "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY", "sessiontoken")
+        @test creds.access_key_id == "AKIAIOSFODNN7EXAMPLE"
+        @test creds.secret_key == "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY"
+        @test creds.token == "sessiontoken"
+    end
+
+    @testset "SimpleCredentials AWS extensions" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key1", "secret1", "token1")
+        @test AWS.credentials(creds) === creds
+        @test AWS.check_credentials(creds) === creds
+        @test AWS.refresh!(creds; force=false) === creds
+        @test AWS.refresh!(creds) === creds
+    end
+
+    # --- GarageConfig ---
+
+    @testset "GarageConfig construction" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com", "us-east-1", creds)
+        @test config.endpoint == "https://s3-api.example.com"
+        @test config.region == "us-east-1"
+        @test config.credentials === creds
+        @test config isa AWS.AbstractAWSConfig
+    end
+
+    @testset "GarageConfig AWS extensions" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com", "garage", creds)
+        @test AWS.region(config) == "garage"
+        @test AWS.credentials(config) === creds
+    end
+
+    # --- AWS.generate_service_url ---
+
+    @testset "generate_service_url with resource starting with /" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "/mybucket/key")
+        @test url == "https://s3-api.example.com/mybucket/key"
+    end
+
+    @testset "generate_service_url with resource NOT starting with /" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "mybucket/key")
+        @test url == "https://s3-api.example.com/mybucket/key"
+    end
+
+    @testset "generate_service_url strips trailing slashes from endpoint" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com/", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "/bucket/key")
+        @test url == "https://s3-api.example.com/bucket/key"
+    end
+
+    @testset "generate_service_url with multiple trailing slashes" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("https://s3-api.example.com///", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "/bucket/key")
+        @test url == "https://s3-api.example.com/bucket/key"
+    end
+
+    @testset "generate_service_url preserves http endpoint" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("http://localhost:3900", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "/bucket/key")
+        @test url == "http://localhost:3900/bucket/key"
+    end
+
+    @testset "generate_service_url with http endpoint and trailing slash" begin
+        creds = GeneralUtils.garageS3.SimpleCredentials("key", "secret", "")
+        config = GeneralUtils.garageS3.GarageConfig("http://localhost:3900/", "garage", creds)
+        url = AWS.generate_service_url(config, "s3", "/bucket/key")
+        @test url == "http://localhost:3900/bucket/key"
+    end
+
+    # --- GarageStorage ---
+
+    @testset "GarageStorage default region" begin
+        storage = GarageStorage("https://s3-api.example.com", "key123", "secret123", "mybucket")
+        @test storage.bucket == "mybucket"
+        @test storage.config.region == "garage"
+        @test storage.config.endpoint == "https://s3-api.example.com"
+    end
+
+    @testset "GarageStorage custom region" begin
+        storage = GarageStorage("https://s3-api.example.com", "key123", "secret123", "mybucket"; region="custom-region")
+        @test storage.config.region == "custom-region"
+    end
+
+    @testset "GarageStorage endpoint without https" begin
+        storage = GarageStorage("http://localhost:3900", "key", "secret", "mybucket")
+        @test storage.config.endpoint == "http://localhost:3900"
+    end
+
+    @testset "GarageStorage credentials are SimpleCredentials" begin
+        storage = GarageStorage("https://s3-api.example.com", "mykey", "mysecret", "mybucket")
+        @test storage.config.credentials isa GeneralUtils.garageS3.SimpleCredentials
+        @test storage.config.credentials.access_key_id == "mykey"
+        @test storage.config.credentials.secret_key == "mysecret"
+        @test storage.config.credentials.token == ""
+    end
+
+    @testset "GarageStorage returns correct struct type" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        @test storage isa GarageStorage
+    end
+
+    # --- put_file callable struct (slash detection) ---
+
+    @testset "put_file callable struct returns nothing for keys with slashes" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        uploader = put_file(storage)
+        result = @test_logs (:warn, r"Upload aborted") uploader("a/b.json", "data")
+        @test result === nothing
+    end
+
+    @testset "put_file callable struct type is correct" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        uploader = put_file(storage)
+        @test uploader isa put_file
+    end
+
+    @testset "put_file callable struct construction stores storage" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        uploader = put_file(storage)
+        @test uploader.storage === storage
+    end
+
+    # --- put_file function (slash detection) ---
+
+    @testset "put_file function returns nothing for keys with slashes" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        result = @test_logs (:warn, r"Upload aborted") put_file(storage, "a/b.json", "data")
+        @test result === nothing
+    end
+
+    @testset "put_file function returns nothing for keys with multiple slashes" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        result = @test_logs (:warn, r"Upload aborted") put_file(storage, "a/b/c/d.json", "data")
+        @test result === nothing
+    end
+
+    @testset "put_file function returns nothing for key with single slash in middle" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        result = @test_logs (:warn, r"Upload aborted") put_file(storage, "folder/file.json", "data")
+        @test result === nothing
+    end
+
+    @testset "put_file function returns nothing for key with trailing slash pattern" begin
+        storage = GarageStorage("https://s3-api.example.com", "key", "secret", "bucket")
+        result = @test_logs (:warn, r"Upload aborted") put_file(storage, "a/b", "data")
+        @test result === nothing
+    end
+
+    # --- Integration tests with real Garage server ---
+
+    @testset "integration: full CRUD lifecycle" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+
+        test_key = "testrunner-$(randstring(8)).json"
+        test_data = "{\"status\": \"testing\", \"runner\": \"runtests\"}"
+
+        # Test put_file(storage, key, data) - successful upload
+        result = put_file(storage, test_key, test_data)
+        @test result !== nothing
+        @test haskey(result, :api)
+        @test haskey(result, :web)
+        @test occursin("testbucket", result.api)
+        @test occursin("s3-api", result.api)
+        @test occursin("s3-web", result.web)
+
+        # Test get_file - retrieve the uploaded data
+        downloaded = get_file(storage, test_key)
+        @test downloaded !== nothing
+        @test downloaded isa Vector{UInt8}
+        @test String(downloaded) == test_data
+
+        # Test list_files - verify key appears in listing
+        keys = list_files(storage)
+        @test test_key in keys
+
+        # Test put_file callable struct
+        test_key2 = "testrunner-callable-$(randstring(8)).json"
+        callable_result = put_file(storage)(test_key2, "callable-data")
+        @test callable_result !== nothing
+        @test callable_result.api != ""
+        @test callable_result.web != ""
+
+        # Verify callable upload
+        downloaded2 = get_file(storage, test_key2)
+        @test String(downloaded2) == "callable-data"
+
+        # Test delete_file
+        delete_file(storage, test_key)
+        deleted_data = get_file(storage, test_key)
+        @test deleted_data === nothing
+
+        # Cleanup callable test object
+        delete_file(storage, test_key2)
+        deleted_data2 = get_file(storage, test_key2)
+        @test deleted_data2 === nothing
+    end
+
+    @testset "integration: put_file rejects slashes even with real server" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+        result = @test_logs (:warn, r"Upload aborted") put_file(storage, "folder/test.json", "data")
+        @test result === nothing
+    end
+
+    @testset "integration: get_file returns nothing for missing key" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+        result = get_file(storage, "nonexistent-key-$(randstring(8)).json")
+        @test result === nothing
+    end
+
+    @testset "integration: binary data upload and download" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+
+        test_key = "testrunner-binary-$(randstring(8)).bin"
+        binary_data = UInt8[0x00, 0x01, 0x02, 0xFF, 0xFE, 0xFD, 0x48, 0x65, 0x6c, 0x6c, 0x6f]
+
+        result = put_file(storage, test_key, binary_data)
+        @test result !== nothing
+
+        downloaded = get_file(storage, test_key)
+        @test downloaded == binary_data
+
+        delete_file(storage, test_key)
+        @test get_file(storage, test_key) === nothing
+    end
+
+    @testset "integration: list_files returns vector of strings" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+
+        test_key = "testrunner-list-$(randstring(8)).txt"
+        put_file(storage, test_key, "list-test-data")
+
+        keys = list_files(storage)
+        @test keys isa Vector{String}
+        @test test_key in keys
+
+        delete_file(storage, test_key)
+    end
+
+    @testset "integration: url format validation" begin
+        storage = GarageStorage(
+            "https://s3-api.yiem.cc",
+            "GKb080154a2e5b19100b1b2c6e",
+            "a2c6b1379c2f731d3e6e5a408dd4d6cffca7511717675f55114ff94828febca1",
+            "testbucket"
+        )
+
+        test_key = "testrunner-url-$(randstring(8)).json"
+        result = put_file(storage, test_key, "url-test")
+
+        @test startswith(result.api, "https://s3-api.yiem.cc/testbucket/")
+        @test occursin("/$test_key", result.api)
+        @test startswith(result.web, "https://s3-web.yiem.cc/testbucket/")
+        @test occursin("/$test_key", result.web)
+
+        delete_file(storage, test_key)
+    end
 
-@testset "detect_keyword tests" begin
-    @test detect_keyword(["test"], "this is a test") == Dict("test" => 1)
-    
-    @test detect_keyword(["hello", "world"], "hello world hello") == Dict("hello" => 2, "world" => 1)
-    
-    @test detect_keyword(["cat"], "category") == Dict("cat" => 1)
-    
-    @test detect_keyword(["cat"], "category"; mode="individual") == Dict("cat" => 0)
-    
-    @test detect_keyword(["dog"], "dogs and cats"; mode="individual", delimiter=[' ']) == Dict("dog" => 0)
-    
-    @test detect_keyword(["test"], "test.case"; mode="individual", delimiter=['.']) == Dict("test" => 1)
-    
-    @test detect_keyword(["word"], "") == Dict("word" => 0)
-    
-    @test detect_keyword(String[], "some text") == Dict{String, Integer}()
-    
-    @test detect_keyword(["a", "b"], "a.b\nc"; delimiter=['.', '\n']) == Dict("a" => 1, "b" => 1)
-    
-    multiline_text = """
-    first line
-    second line
-    first word
-    """
-    @test detect_keyword(["first"], multiline_text) == Dict("first" => 2)
-    
-    @test detect_keyword(["word"], "word"; mode="individual") == Dict("word" => 1)
-    
-    @test detect_keyword(["test"], "testing.test.tester"; mode="individual", delimiter=['.']) == Dict("test" => 1)
 end
-
-
-
-
-
-