Inline smoke test (#35)

* Integrate the examples into cargo-raze

* Add the remote examples as well

* Add a README doc for remote examples

* Fix the build after adding remote README

* Remove examples for PR

* Enable -f on `rm` so no error if dirs don't exist

* Explicitly reset working directory back to original

* Rename examples/README.md

* Move the command exists check to a function

* Make sure `command_exists` actually checks for existence

* DIR -> REPO_ROOT

examples/.gitignore

@@ -0,0 +1,5 @@
+bazel-bin
+bazel-examples
+bazel-genfiles
+bazel-out
+bazel-testlogs

examples/DO_NOT_EDIT_HERE.md

@@ -0,0 +1,9 @@
+# Cargo Raze Examples
+
+The examples directory contains some example usages of Cargo Raze to set up projects for Bazel building.
+
+# Contributing
+
+This directory is used in the testing process of Cargo Raze to make sure that practical examples work
+during the test process for all contributions. Please do not commit new code here, as it will be destroyed
+by the testing process. Instead, new examples should be added to the `smoke_test` directory.

smoke-test.sh

@@ -1,7 +1,79 @@
-#! /usr/bin/env bash
-set -e
+#!/usr/bin/env bash
 
-mkdir /tmp/cargo_raze_scratch && cd /tmp/cargo_raze_scratch
-git clone https://github.com/acmcarther/cargo-raze-examples
-cd cargo-raze-examples
-(cd ./internal && ./evaluate-local-raze.sh)
+set -eu
+
+function command_exists {
+    command -v "$1" >/dev/null 2>&1 || ( echo "Command \`$1\` isn't available. Please install before continuing."; exit 1 )
+}
+
+PWD="$(pwd)"
+
+REPO_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd "$REPO_ROOT"
+
+EXAMPLES_DIR="$REPO_ROOT/examples"
+TEST_DIR="$REPO_ROOT/smoke_test"
+
+command_exists "cargo"
+command_exists "cargo-vendor"
+command_exists "bazel"
+
+# Clean the `examples` directory
+rm -rf "$EXAMPLES_DIR/remote" "$EXAMPLES_DIR/vendored"
+cp -r "$TEST_DIR/remote" "$TEST_DIR/vendored" "$EXAMPLES_DIR"
+
+# Set up the new WORKSPACE file
+cat > "$EXAMPLES_DIR/WORKSPACE" << EOF
+workspace(name = "io_bazel_rules_rust")
+
+git_repository(
+    name = "io_bazel_rules_rust",
+    commit = "ee61ddff0b97cfc36278902e5210d1929ba5b119",           
+    remote = "https://github.com/bazelbuild/rules_rust.git",
+)
+
+load("@io_bazel_rules_rust//rust:repositories.bzl", "rust_repositories")
+rust_repositories()
+
+EOF
+
+for ex in $(find $TEST_DIR/remote -maxdepth 1 -type d | tail -n+2); do
+    name="$(basename "$ex")"
+    cat >> "$EXAMPLES_DIR/WORKSPACE" << EOF
+load("//remote/${name}/cargo:crates.bzl", "${name}_fetch_remote_crates")
+${name}_fetch_remote_crates()
+
+EOF
+done
+
+# Run Cargo Vendor over the appropriate projects
+for ex in $(find $EXAMPLES_DIR/vendored -maxdepth 1 -type d | tail -n+2); do
+    echo "Running Cargo Vendor for $(basename "$ex")"
+    cd "$ex/cargo"
+    cargo vendor -xq
+done
+
+# Ensure Cargo Raze build is up-to-date
+cd "$REPO_ROOT"
+echo "Building local Cargo Raze"
+cargo build --quiet
+RAZE="$REPO_ROOT/target/debug/cargo-raze raze"
+for ex in $(find $EXAMPLES_DIR -mindepth 2 -maxdepth 2 -type d); do
+    echo "Running Cargo Raze for $(basename $ex)"
+    cd "$ex/cargo"
+    eval "$RAZE"
+done
+
+# Run the Bazel build for all targets
+cd "$EXAMPLES_DIR"
+for ex in $(find $EXAMPLES_DIR -mindepth 2 -maxdepth 2 -type d); do
+    ex_name="$(basename "$ex")"
+    ex_type="$(basename $(dirname "$ex"))"
+    bazel_path="//$ex_type/$ex_name:all"
+    bazel_cargo_path="//$ex_type/$ex_name/cargo:all"
+
+    echo "Running Bazel build for $bazel_path, $bazel_cargo_path"
+    bazel build "$bazel_path" && bazel build "$bazel_cargo_path"
+done
+
+cd "$PWD"

smoke_test/README.md

@@ -0,0 +1,5 @@
+# Cargo Raze Smoke Test
+
+The smoke test for Cargo raze consists of some basic examples that are tested to make sure Bazel
+functionality hasn't broken for new code. New examples should be created here, but `cargo-vendor`
+and `cargo-raze` should *NOT* be run.

smoke_test/remote/README.md

@@ -0,0 +1,13 @@
+# Adding new remote examples
+
+The smoke test script generates a WORKSPACE file that looks up the `crates.bzl` functions
+and assumes that the function name is `<folder>_fetch_remote_crates`.
+
+In order to make sure that this assertion holds, please make sure set up **Cargo.toml** as such:
+
+**Cargo.toml**
+```toml
+
+[raze]
+gen_workspace_prefix = "<folder>"
+```

smoke_test/remote/complicated_cargo_library/BUILD

@@ -0,0 +1,10 @@
+load("@io_bazel_rules_rust//rust:rust.bzl", "rust_binary")
+
+rust_binary(
+    name = "complicated_cargo_library",
+    srcs = ["src/main.rs"],
+    deps = [
+        "//remote/complicated_cargo_library/cargo:regex",
+        "//remote/complicated_cargo_library/cargo:specs",
+    ],
+)

smoke_test/remote/complicated_cargo_library/README.md

@@ -0,0 +1,3 @@
+# complicated_cargo_library_remote
+
+This is a "no vendor" version of the complicated_cargo_library.