Add std default feature (#30)

The base types will be used in constrained environments such as WASM.

A no-std build is required to allow these types to be used.

fuel-tx/.github/workflows/cargo_test.yml

@@ -33,6 +33,18 @@ jobs:
  toolchain: stable
  override: true
 
+
+ # Using thumbv6m-none-eabi as ARMv6-M arbitrary common choice for a bare-minimum target.
+ # More info: https://docs.rs/cortex-m-rt/latest/cortex_m_rt/
+ #
+ # Can be replaced by other targets that guarantee bare-minimum no-std
+ - name: Install toolchain no-std
+ uses: actions-rs/toolchain@v1
+ with:
+ toolchain: stable
+ target: thumbv6m-none-eabi
+ override: true
+
  - name: Install rustfmt
  run: rustup component add rustfmt
 
@@ -48,13 +60,37 @@ jobs:
  command: build
  args: --verbose
 
+ - name: Build no-std
+ uses: actions-rs/cargo@v1
+ with:
+ command: build
+ args: --verbose --target thumbv6m-none-eabi --no-default-features
+
+ - name: Build no-std serde
+ uses: actions-rs/cargo@v1
+ with:
+ command: build
+ args: --verbose --target thumbv6m-none-eabi --no-default-features --features serde-types-minimal
+
  - name: Run tests
  uses: actions-rs/cargo@v1
  with:
  command: test
  args: --verbose
 
- - name: Run tests
+ - name: Run tests no-std
+ uses: actions-rs/cargo@v1
+ with:
+ command: test
+ args: --verbose --no-default-features
+
+ - name: Run tests serde no-std
+ uses: actions-rs/cargo@v1
+ with:
+ command: test
+ args: --verbose --no-default-features --features serde-types-minimal
+
+ - name: Run tests serde
  uses: actions-rs/cargo@v1
  with:
  command: test

fuel-tx/Cargo.toml

@@ -9,11 +9,29 @@ repository = "https:/FuelLabs/fuel-tx"
 description = "FuelVM transaction."
 
 [dependencies]
-fuel-asm = { git = "ssh://[email protected]/FuelLabs/fuel-asm.git" }
-itertools = "0.10"
-rand = "0.8"
-serde = { version = "1.0", features = ["derive"], optional = true }
-sha2 = "0.9"
+fuel-asm = { git = "ssh://[email protected]/FuelLabs/fuel-asm.git", default-features = false }
+itertools = { version = "0.10", optional = true }
+rand = { version = "0.8", optional = true }
+serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
+sha2 = { version = "0.9", optional = true }
 
 [features]
-serde-types = ["serde", "fuel-asm/serde-types"]
+default = [ "fuel-asm/default", "std" ]
+std = [ "fuel-asm/std", "itertools", "rand", "sha2" ]
+serde-types = [ "fuel-asm/serde-types", "serde-types-minimal", "serde/default", "std" ]
+serde-types-minimal = [ "fuel-asm/serde-types-minimal", "serde" ]
+
+[[test]]
+name = "test-bytes"
+path = "tests/bytes.rs"
+required-features = ["std"]
+
+[[test]]
+name = "test-offsets"
+path = "tests/offset.rs"
+required-features = ["std"]
+
+[[test]]
+name = "test-valid"
+path = "tests/valid.rs"
+required-features = ["std"]