Add integration tests for Python segment (#38)

.build/install-rust.yml

@@ -1,20 +1,12 @@
-parameters:
-  versionSpec: ""
-
 steps:
-  # Install Rust at a fixed version for integration tests to pass
  - script: |
      curl -sSf -o rustup-init.exe https://win.rustup.rs
-     rustup-init.exe -y --default-toolchain ${{ parameters.versionSpec }}
+     rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN%
      echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
-   displayName: Windows install Rust
+   displayName: Windows install rust
    condition: eq( variables['Agent.OS'], 'Windows_NT' )
  - script: |
-     curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${{ parameters.versionSpec }}
+     curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUSTUP_TOOLCHAIN
      echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
-   displayName: Install a fixed version of Rust
+   displayName: Install rust
    condition: ne( variables['Agent.OS'], 'Windows_NT' )
-
-  # Install the version of Rust used for testing with
- - script: rustup install $RUSTUP_TOOLCHAIN
-   displayName: Install Rust used for CI

azure-pipelines.yml

@@ -20,7 +20,7 @@ jobs:
       - script: rustup component add rustfmt
         displayName: Install Rustfmt
       - script: cargo fmt --all -- --check
-        displayName: Run Rustfmt
+        displayName: Run rustfmt
 
   # Run the integration tests in a Docker container
   - job: "Docker"
@@ -36,19 +36,19 @@ jobs:
       matrix:
         windows-stable:
           imageName: "vs2017-win2016"
-          rustup_toolchain: stable
+          RUSTUP_TOOLCHAIN: stable
         mac-stable:
           imageName: "macos-10.13"
-          rustup_toolchain: stable
+          RUSTUP_TOOLCHAIN: stable
         linux-stable:
           imageName: "ubuntu-16.04"
-          rustup_toolchain: stable
+          RUSTUP_TOOLCHAIN: stable
         linux-beta:
           imageName: "ubuntu-16.04"
-          rustup_toolchain: beta
+          RUSTUP_TOOLCHAIN: beta
         linux-nightly:
           imageName: "ubuntu-16.04"
-          rustup_toolchain: nightly
+          RUSTUP_TOOLCHAIN: nightly
     pool:
       vmImage: "ubuntu-16.04"
     steps:
@@ -60,13 +60,14 @@ jobs:
       - task: GoTool@0
         inputs:
           versionSpec: "1.10"
-      # Install Rust at a fixed version for integration tests
+      # Install Python
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: "3.7.2"
+      # Install Rust
       - template: ".build/install-rust.yml"
-        parameters:
-          versionSpec: "1.34.0"
 
-      # Because integration tests rely on a fixed Rust version, we must use rustup to run with the intended toolkit
-      - script: rustup run $RUSTUP_TOOLCHAIN cargo build --all
+      - script: cargo build
         displayName: Cargo build
-      - script: rustup run $RUSTUP_TOOLCHAIN cargo test -- --ignored
+      - script: cargo test -- --ignored
         displayName: Cargo test

integration_test

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-if ! (docker --version); then 
+if ! (docker --version); then
   printf 'Docker is required to run the starship integration tests.\n'
   printf 'Please download and install Docker in order to run these tests locally.\n'
   exit 1

tests/Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.34.0
+FROM rust:latest
 
 # Install Node.js
 ENV NODE_VERSION 12.0.0
@@ -25,7 +25,18 @@ ENV PATH $GO_ROOT/bin:$PATH
 RUN goenv install $GO_VERSION
 RUN goenv global $GO_VERSION
 # Check that Go was correctly installed
+
 RUN go version
+# Install Python
+ENV PYTHON_VERSION 3.7.2
+ENV PYENV_ROOT /root/.pyenv
+ENV PATH $PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH
+RUN curl https://pyenv.run | bash \
+  && pyenv update \
+  && pyenv install $PYTHON_VERSION \
+  && pyenv global $PYTHON_VERSION
+# Check that Python was correctly installed
+RUN python --version
 
 # Create blank project
 RUN USER=root cargo new --bin starship
@@ -40,8 +51,7 @@ RUN mkdir benches
 RUN touch benches/my_benchmark.rs
 
 # This is a dummy build to get dependencies cached
-RUN rustup install stable
-RUN rustup run stable cargo build --release
+RUN cargo build --release
 
 # Delete the dummy build
 RUN rm -rf /starship
@@ -50,5 +60,4 @@ RUN rm -rf /starship
 RUN mkdir starship
 WORKDIR /starship
 
-# Run with rustup to use stable instead of the Rust default
-CMD [ "rustup", "run", "stable", "cargo", "test", "--", "--ignored"]
+CMD ["cargo", "test", "--", "--ignored"]

tests/python.rs

@@ -0,0 +1,79 @@
+use ansi_term::Color;
+use starship::segment::Segment;
+use std::fs::File;
+use std::io;
+use tempfile::TempDir;
+
+mod common;
+
+#[test]
+#[ignore]
+fn folder_with_python_version() -> io::Result<()> {
+    let dir = TempDir::new()?;
+    File::create(dir.path().join(".python-version"))?;
+
+    let expected = format!(
+        "via {} ",
+        Segment::new("python")
+            .set_value("🐍 v3.7.2")
+            .set_style(Color::Yellow.bold())
+    );
+    let actual = common::render_module("python", &dir.path());
+    assert_eq!(expected, actual);
+
+    Ok(())
+}
+
+#[test]
+#[ignore]
+fn folder_with_requirements_txt() -> io::Result<()> {
+    let dir = TempDir::new()?;
+    File::create(dir.path().join("requirements.txt"))?;
+
+    let expected = format!(
+        "via {} ",
+        Segment::new("python")
+            .set_value("🐍 v3.7.2")
+            .set_style(Color::Yellow.bold())
+    );
+    let actual = common::render_module("python", &dir.path());
+    assert_eq!(expected, actual);
+
+    Ok(())
+}
+
+#[test]
+#[ignore]
+fn folder_with_pyproject_toml() -> io::Result<()> {
+    let dir = TempDir::new()?;
+    File::create(dir.path().join("pyproject.toml"))?;
+
+    let expected = format!(
+        "via {} ",
+        Segment::new("python")
+            .set_value("🐍 v3.7.2")
+            .set_style(Color::Yellow.bold())
+    );
+    let actual = common::render_module("python", &dir.path());
+    assert_eq!(expected, actual);
+
+    Ok(())
+}
+
+#[test]
+#[ignore]
+fn folder_with_py_file() -> io::Result<()> {
+    let dir = TempDir::new()?;
+    File::create(dir.path().join("main.py"))?;
+
+    let expected = format!(
+        "via {} ",
+        Segment::new("python")
+            .set_value("🐍 v3.7.2")
+            .set_style(Color::Yellow.bold())
+    );
+    let actual = common::render_module("python", &dir.path());
+    assert_eq!(expected, actual);
+
+    Ok(())
+}