Add test for systemwide config file support

There is now a new stage in the CICD workflow present, which will build
`bat` with the `BAT_SYSTEM_CONFIG_PREFIX` set to load the config file
from `/tests/examples/system_config/bat/config`, plus a basic set of
tests, to ensure the feature is working as expected. By default the
tests are set to ignored, as they need special setup before they can be
run.

.github/workflows/CICD.yml

@@ -87,7 +87,7 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: test
-        args: --locked --release -- --ignored
+        args: --locked --release --test assets -- --ignored
     - name: Syntax highlighting regression test
       run: tests/syntax-tests/regression_test.sh
     - name: List of languages
@@ -97,6 +97,32 @@ jobs:
     - name: Test custom assets
       run: tests/syntax-tests/test_custom_assets.sh
 
+  test_with_system_config:
+    name: Run tests with system wide configuration
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Git checkout
+      uses: actions/checkout@v2
+    - name: Prepare environment variables
+      run: |
+        echo "BAT_SYSTEM_CONFIG_PREFIX=$GITHUB_WORKSPACE/tests/examples/system_config" >> $GITHUB_ENV
+    - name: Install Rust toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        default: true
+        profile: minimal
+    - name: Build and install bat
+      uses: actions-rs/cargo@v1
+      with:
+        command: install
+        args: --locked --path .
+    - name: Run unit tests
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+        args: --locked --test system_wide_config -- --ignored
+
   documentation:
     name: Documentation
     runs-on: ubuntu-20.04

tests/examples/bat.conf

@@ -1,5 +1,5 @@
 # Make sure that the pager gets executed
 --paging=always
 
-# Output a dummy message for the integration test.
+# Output a dummy message for the integration test and system wide config test.
 --pager="echo dummy-pager-from-config"

tests/examples/system_config/bat/config

@@ -0,0 +1,5 @@
+# Make sure that the pager gets executed
+--paging=always
+
+# Output a dummy message for the integration test.
+--pager="echo dummy-pager-from-system-config"

tests/integration_tests.rs

@@ -1,8 +1,6 @@
-use assert_cmd::cargo::CommandCargoExt;
 use predicates::{prelude::predicate, str::PredicateStrExt};
 use serial_test::serial;
 use std::path::Path;
-use std::process::Command;
 use std::str::from_utf8;
 use tempfile::tempdir;
 
@@ -27,41 +25,11 @@ mod unix {
 use unix::*;
 
 mod utils;
+use utils::command::{bat, bat_raw_command, bat_with_config};
 use utils::mocked_pagers;
 
 const EXAMPLES_DIR: &str = "tests/examples";
 
-fn bat_raw_command_with_config() -> Command {
-    let mut cmd = Command::cargo_bin("bat").unwrap();
-    cmd.current_dir("tests/examples");
-    cmd.env_remove("BAT_CACHE_PATH");
-    cmd.env_remove("BAT_CONFIG_DIR");
-    cmd.env_remove("BAT_CONFIG_PATH");
-    cmd.env_remove("BAT_OPTS");
-    cmd.env_remove("BAT_PAGER");
-    cmd.env_remove("BAT_STYLE");
-    cmd.env_remove("BAT_TABS");
-    cmd.env_remove("BAT_THEME");
-    cmd.env_remove("COLORTERM");
-    cmd.env_remove("NO_COLOR");
-    cmd.env_remove("PAGER");
-    cmd
-}
-
-fn bat_raw_command() -> Command {
-    let mut cmd = bat_raw_command_with_config();
-    cmd.arg("--no-config");
-    cmd
-}
-
-fn bat_with_config() -> assert_cmd::Command {
-    assert_cmd::Command::from_std(bat_raw_command_with_config())
-}
-
-fn bat() -> assert_cmd::Command {
-    assert_cmd::Command::from_std(bat_raw_command())
-}
-
 #[test]
 fn basic() {
     bat()

tests/system_wide_config.rs

@@ -0,0 +1,29 @@
+use predicates::{prelude::predicate, str::PredicateStrExt};
+
+mod utils;
+use utils::command::bat_with_config;
+
+// This test is ignored, as it needs a special system wide config put into place.
+// In order to run this tests, use `cargo test --test system_wide_config -- --ignored`
+#[test]
+#[ignore]
+fn use_systemwide_config() {
+    bat_with_config()
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout(predicate::eq("dummy-pager-from-system-config\n").normalize());
+}
+
+// This test is ignored, as it needs a special system wide config put into place
+// In order to run this tests, use `cargo test --test system_wide_config -- --ignored`
+#[test]
+#[ignore]
+fn config_overrides_system_config() {
+    bat_with_config()
+        .env("BAT_CONFIG_PATH", "bat.conf")
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout(predicate::eq("dummy-pager-from-config\n").normalize());
+}

tests/utils/command.rs

@@ -0,0 +1,33 @@
+use assert_cmd::cargo::CommandCargoExt;
+use std::process::Command;
+
+pub fn bat_raw_command_with_config() -> Command {
+    let mut cmd = Command::cargo_bin("bat").unwrap();
+    cmd.current_dir("tests/examples");
+    cmd.env_remove("BAT_CACHE_PATH");
+    cmd.env_remove("BAT_CONFIG_DIR");
+    cmd.env_remove("BAT_CONFIG_PATH");
+    cmd.env_remove("BAT_OPTS");
+    cmd.env_remove("BAT_PAGER");
+    cmd.env_remove("BAT_STYLE");
+    cmd.env_remove("BAT_TABS");
+    cmd.env_remove("BAT_THEME");
+    cmd.env_remove("COLORTERM");
+    cmd.env_remove("NO_COLOR");
+    cmd.env_remove("PAGER");
+    cmd
+}
+
+pub fn bat_raw_command() -> Command {
+    let mut cmd = bat_raw_command_with_config();
+    cmd.arg("--no-config");
+    cmd
+}
+
+pub fn bat_with_config() -> assert_cmd::Command {
+    assert_cmd::Command::from_std(bat_raw_command_with_config())
+}
+
+pub fn bat() -> assert_cmd::Command {
+    assert_cmd::Command::from_std(bat_raw_command())
+}

tests/utils/mod.rs

@@ -1 +1,2 @@
+pub mod command;
 pub mod mocked_pagers;