Update dependencies (v1.0.3)

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: ci
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+      - name: Check formatting
+        run: |
+          go fmt ./...
+          git diff --exit-code
+      - name: Run tests
+        run: go test ./...

README.md

@@ -30,6 +30,8 @@ tinyups3 [--partSize=MB] [--inputSize=bytes] s3://bucket/key
 cat largefile | tinyups3 --inputSize $(stat -c%s largefile) s3://... 
 ```
 
+Note: On MacOS use `gstat` instead of the outdated `stat`.
+
 ## Building from source
 
 ```sh
@@ -38,6 +40,12 @@ GOOS=linux GOARCH=arm64 go build -o dist/arm64/tinyups3 .
 
 ## Development
 
+### Running tests
+
+```sh
+go test ./...
+```
+
 ### Formatting
 
 Apply Go formatting:
@@ -55,3 +63,10 @@ go mod tidy
 go run main.go ...
 ```
 
+### Upgrading dependencies
+
+```sh
+go get -u ./...
+go mod tidy 
+```
+

go.mod

@@ -1,27 +1,28 @@
 module github.com/envirobly/tinyups3
 
-go 1.24.5
+go 1.25.5
 
 require (
-	github.com/aws/aws-sdk-go-v2/config v1.30.3
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.86.0
+	github.com/aws/aws-sdk-go-v2/config v1.32.6
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.95.0
 )
 
 require (
-	github.com/aws/aws-sdk-go-v2 v1.37.2 // indirect
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.0 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.18.3 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.2 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.2 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.2 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.3 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.8.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.27.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.32.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.36.0 // indirect
-	github.com/aws/smithy-go v1.22.5 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.41.0 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.6 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.16 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.16 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.7 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.16 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.16 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.0.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.30.8 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.12 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.41.5 // indirect
+	github.com/aws/smithy-go v1.24.0 // indirect
 )

go.sum

@@ -1,36 +1,38 @@
-github.com/aws/aws-sdk-go-v2 v1.37.2 h1:xkW1iMYawzcmYFYEV0UCMxc8gSsjCGEhBXQkdQywVbo=
-github.com/aws/aws-sdk-go-v2 v1.37.2/go.mod h1:9Q0OoGQoboYIAJyslFyF1f5K1Ryddop8gqMhWx/n4Wg=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.0 h1:6GMWV6CNpA/6fbFHnoAjrv4+LGfyTqZz2LtCHnspgDg=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.0/go.mod h1:/mXlTIVG9jbxkqDnr5UQNQxW1HRYxeGklkM9vAFeabg=
-github.com/aws/aws-sdk-go-v2/config v1.30.3 h1:utupeVnE3bmB221W08P0Moz1lDI3OwYa2fBtUhl7TCc=
-github.com/aws/aws-sdk-go-v2/config v1.30.3/go.mod h1:NDGwOEBdpyZwLPlQkpKIO7frf18BW8PaCmAM9iUxQmI=
-github.com/aws/aws-sdk-go-v2/credentials v1.18.3 h1:ptfyXmv+ooxzFwyuBth0yqABcjVIkjDL0iTYZBSbum8=
-github.com/aws/aws-sdk-go-v2/credentials v1.18.3/go.mod h1:Q43Nci++Wohb0qUh4m54sNln0dbxJw8PvQWkrwOkGOI=
-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.2 h1:nRniHAvjFJGUCl04F3WaAj7qp/rcz5Gi1OVoj5ErBkc=
-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.2/go.mod h1:eJDFKAMHHUvv4a0Zfa7bQb//wFNUXGrbFpYRCHe2kD0=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.2 h1:sPiRHLVUIIQcoVZTNwqQcdtjkqkPopyYmIX0M5ElRf4=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.2/go.mod h1:ik86P3sgV+Bk7c1tBFCwI3VxMoSEwl4YkRB9xn1s340=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.2 h1:ZdzDAg075H6stMZtbD2o+PyB933M/f20e9WmCBC17wA=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.2/go.mod h1:eE1IIzXG9sdZCB0pNNpMpsYTLl4YdOQD3njiVN1e/E4=
-github.com/aws/aws-sdk-go-v2/internal/ini v1.8.3 h1:bIqFDwgGXXN1Kpp99pDOdKMTTb5d2KyU5X/BZxjOkRo=
-github.com/aws/aws-sdk-go-v2/internal/ini v1.8.3/go.mod h1:H5O/EsxDWyU+LP/V8i5sm8cxoZgc2fdNR9bxlOFrQTo=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.2 h1:sBpc8Ph6CpfZsEdkz/8bfg8WhKlWMCms5iWj6W/AW2U=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.2/go.mod h1:Z2lDojZB+92Wo6EKiZZmJid9pPrDJW2NNIXSlaEfVlU=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.0 h1:6+lZi2JeGKtCraAj1rpoZfKqnQ9SptseRZioejfUOLM=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.0/go.mod h1:eb3gfbVIxIoGgJsi9pGne19dhCBpK6opTYpQqAmdy44=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.8.2 h1:blV3dY6WbxIVOFggfYIo2E1Q2lZoy5imS7nKgu5m6Tc=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.8.2/go.mod h1:cBWNeLBjHJRSmXAxdS7mwiMUEgx6zup4wQ9J+/PcsRQ=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.2 h1:oxmDEO14NBZJbK/M8y3brhMFEIGN4j8a6Aq8eY0sqlo=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.2/go.mod h1:4hH+8QCrk1uRWDPsVfsNDUup3taAjO8Dnx63au7smAU=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.2 h1:0hBNFAPwecERLzkhhBY+lQKUMpXSKVv4Sxovikrioms=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.2/go.mod h1:Vcnh4KyR4imrrjGN7A2kP2v9y6EPudqoPKXtnmBliPU=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.86.0 h1:utPhv4ECQzJIUbtx7vMN4A8uZxlQ5tSt1H1toPI41h8=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.86.0/go.mod h1:1/eZYtTWazDgVl96LmGdGktHFi7prAcGCrJ9JGvBITU=
-github.com/aws/aws-sdk-go-v2/service/sso v1.27.0 h1:j7/jTOjWeJDolPwZ/J4yZ7dUsxsWZEsxNwH5O7F8eEA=
-github.com/aws/aws-sdk-go-v2/service/sso v1.27.0/go.mod h1:M0xdEPQtgpNT7kdAX4/vOAPkFj60hSQRb7TvW9B0iug=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.32.0 h1:ywQF2N4VjqX+Psw+jLjMmUL2g1RDHlvri3NxHA08MGI=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.32.0/go.mod h1:Z+qv5Q6b7sWiclvbJyPSOT1BRVU9wfSUPaqQzZ1Xg3E=
-github.com/aws/aws-sdk-go-v2/service/sts v1.36.0 h1:bRP/a9llXSSgDPk7Rqn5GD/DQCGo6uk95plBFKoXt2M=
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-github.com/aws/smithy-go v1.22.5 h1:P9ATCXPMb2mPjYBgueqJNCA5S9UfktsW0tTxi+a7eqw=
-github.com/aws/smithy-go v1.22.5/go.mod h1:t1ufH5HMublsJYulve2RKmHDC15xu1f26kHCp/HgceI=
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+github.com/aws/aws-sdk-go-v2 v1.41.0/go.mod h1:MayyLB8y+buD9hZqkCW3kX1AKq07Y5pXxtgB+rRFhz0=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4 h1:489krEF9xIGkOaaX3CE/Be2uWjiXrkCH6gUX+bZA/BU=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.4/go.mod h1:IOAPF6oT9KCsceNTvvYMNHy0+kMF8akOjeDvPENWxp4=
+github.com/aws/aws-sdk-go-v2/config v1.32.6 h1:hFLBGUKjmLAekvi1evLi5hVvFQtSo3GYwi+Bx4lpJf8=
+github.com/aws/aws-sdk-go-v2/config v1.32.6/go.mod h1:lcUL/gcd8WyjCrMnxez5OXkO3/rwcNmvfno62tnXNcI=
+github.com/aws/aws-sdk-go-v2/credentials v1.19.6 h1:F9vWao2TwjV2MyiyVS+duza0NIRtAslgLUM0vTA1ZaE=
+github.com/aws/aws-sdk-go-v2/credentials v1.19.6/go.mod h1:SgHzKjEVsdQr6Opor0ihgWtkWdfRAIwxYzSJ8O85VHY=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16 h1:80+uETIWS1BqjnN9uJ0dBUaETh+P1XwFy5vwHwK5r9k=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.16/go.mod h1:wOOsYuxYuB/7FlnVtzeBYRcjSRtQpAW0hCP7tIULMwo=
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main.go

@@ -34,6 +34,17 @@ func parseS3URI(s3uri string) (bucket, key string, err error) {
 	return bucket, key, nil
 }
 
+func calculatePartsCount(inputSize int64, partSize int) int {
+	if inputSize <= 0 || partSize <= 0 {
+		return 0
+	}
+	partsCount := int(inputSize/int64(partSize)) + 1
+	if inputSize%int64(partSize) == 0 {
+		partsCount--
+	}
+	return partsCount
+}
+
 func main() {
 	// Define flags with input size
 	partSizeMB := flag.Int("partSize", 5, "Part size in MB for multipart upload (min 5MB)")
@@ -83,10 +94,7 @@ func main() {
 	})
 
 	// Calculate exact number of parts
-	partsCount := int(*inputSize/int64(partSize)) + 1
-	if *inputSize%int64(partSize) == 0 {
-		partsCount--
-	}
+	partsCount := calculatePartsCount(*inputSize, partSize)
 
 	// Start multipart upload
 	createOutput, err := client.CreateMultipartUpload(ctx, &s3.CreateMultipartUploadInput{
@@ -99,7 +107,7 @@ func main() {
 
 	uploadID := createOutput.UploadId
 	parts := make([]types.CompletedPart, 0, partsCount) // Preallocate slice
-	buffer := make([]byte, partSize)                 // Single buffer allocation
+	buffer := make([]byte, partSize)                    // Single buffer allocation
 
 	partNumber := int32(1)
 	for {

main_test.go

@@ -0,0 +1,107 @@
+package main
+
+import "testing"
+
+func TestParseS3URI(t *testing.T) {
+	tests := []struct {
+		name    string
+		uri     string
+		bucket  string
+		key     string
+		wantErr bool
+	}{
+		{
+			name:   "valid simple",
+			uri:    "s3://my-bucket/my-key",
+			bucket: "my-bucket",
+			key:    "my-key",
+		},
+		{
+			name:   "valid nested key",
+			uri:    "s3://bucket/dir/file.txt",
+			bucket: "bucket",
+			key:    "dir/file.txt",
+		},
+		{
+			name:    "missing scheme",
+			uri:     "https://bucket/key",
+			wantErr: true,
+		},
+		{
+			name:    "missing bucket",
+			uri:     "s3:///key",
+			wantErr: true,
+		},
+		{
+			name:    "missing key",
+			uri:     "s3://bucket/",
+			wantErr: true,
+		},
+		{
+			name:    "missing bucket and key",
+			uri:     "s3://",
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			bucket, key, err := parseS3URI(tt.uri)
+			if tt.wantErr {
+				if err == nil {
+					t.Fatalf("expected error for %q", tt.uri)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("unexpected error for %q: %v", tt.uri, err)
+			}
+			if bucket != tt.bucket || key != tt.key {
+				t.Fatalf("got bucket=%q key=%q, want bucket=%q key=%q", bucket, key, tt.bucket, tt.key)
+			}
+		})
+	}
+}
+
+func TestCalculatePartsCount(t *testing.T) {
+	tests := []struct {
+		name      string
+		inputSize int64
+		partSize  int
+		want      int
+	}{
+		{
+			name:      "single byte",
+			inputSize: 1,
+			partSize:  5,
+			want:      1,
+		},
+		{
+			name:      "exact multiple",
+			inputSize: 10,
+			partSize:  5,
+			want:      2,
+		},
+		{
+			name:      "one over multiple",
+			inputSize: 11,
+			partSize:  5,
+			want:      3,
+		},
+		{
+			name:      "exact one part",
+			inputSize: 5,
+			partSize:  5,
+			want:      1,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := calculatePartsCount(tt.inputSize, tt.partSize)
+			if got != tt.want {
+				t.Fatalf("got %d, want %d", got, tt.want)
+			}
+		})
+	}
+}