1 files changed, 520 insertions, 0 deletions
diff --git a/src/tools/cargo/tests/testsuite/cargo_config.rs b/src/tools/cargo/tests/testsuite/cargo_config.rs
new file mode 100644
index 000000000..e367f8e06
--- /dev/null
+++ b/src/tools/cargo/tests/testsuite/cargo_config.rs
@@ -0,0 +1,520 @@
+//! Tests for the `cargo config` command.
+
+use super::config::write_config_at;
+use cargo_test_support::paths;
+use std::fs;
+use std::path::PathBuf;
+
+fn cargo_process(s: &str) -> cargo_test_support::Execs {
+    let mut p = cargo_test_support::cargo_process(s);
+    // Clear out some of the environment added by the default cargo_process so
+    // the tests don't need to deal with it.
+    p.env_remove("CARGO_PROFILE_DEV_SPLIT_DEBUGINFO")
+        .env_remove("CARGO_PROFILE_TEST_SPLIT_DEBUGINFO")
+        .env_remove("CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO")
+        .env_remove("CARGO_PROFILE_BENCH_SPLIT_DEBUGINFO")
+        .env_remove("CARGO_INCREMENTAL");
+    p
+}
+
+#[cargo_test]
+fn gated() {
+    cargo_process("config get")
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stderr("\
+error: the `cargo config` command is unstable, pass `-Z unstable-options` to enable it
+See https://github.com/rust-lang/cargo/issues/9301 for more information about the `cargo config` command.
+")
+        .run();
+}
+
+fn common_setup() -> PathBuf {
+    write_config_at(
+        paths::home().join(".cargo/config.toml"),
+        "
+        [alias]
+        foo = \"abc --xyz\"
+        [build]
+        jobs = 99
+        rustflags = [\"--flag-global\"]
+        [profile.dev]
+        opt-level = 3
+        [profile.dev.package.foo]
+        opt-level = 1
+        [target.'cfg(target_os = \"linux\")']
+        runner = \"runme\"
+
+        # How unknown keys are handled.
+        [extra-table]
+        somekey = \"somevalue\"
+        ",
+    );
+    let sub_folder = paths::root().join("foo/.cargo");
+    write_config_at(
+        sub_folder.join("config.toml"),
+        "
+        [alias]
+        sub-example = [\"sub\", \"example\"]
+        [build]
+        rustflags = [\"--flag-directory\"]
+        ",
+    );
+    sub_folder
+}
+
+#[cargo_test]
+fn get_toml() {
+    // Notes:
+    // - The "extra-table" is shown without a warning. I'm not sure how that
+    //   should be handled, since displaying warnings could cause problems
+    //   with ingesting the output.
+    // - Environment variables aren't loaded. :(
+    let sub_folder = common_setup();
+    cargo_process("config get -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_ALIAS_BAR", "cat dog")
+        .env("CARGO_BUILD_JOBS", "100")
+        // The weird forward slash in the linux line is due to testsuite normalization.
+        .with_stdout(
+            "\
+alias.foo = \"abc --xyz\"
+alias.sub-example = [\"sub\", \"example\"]
+build.jobs = 99
+build.rustflags = [\"--flag-directory\", \"--flag-global\"]
+extra-table.somekey = \"somevalue\"
+profile.dev.opt-level = 3
+profile.dev.package.foo.opt-level = 1
+target.\"cfg(target_os = \\\"linux\\\")\".runner = \"runme\"
+# The following environment variables may affect the loaded values.
+# CARGO_ALIAS_BAR=[..]cat dog[..]
+# CARGO_BUILD_JOBS=100
+# CARGO_HOME=[ROOT]/home/.cargo
+",
+        )
+        .with_stderr("")
+        .run();
+
+    // Env keys work if they are specific.
+    cargo_process("config get build.jobs -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_JOBS", "100")
+        .with_stdout("build.jobs = 100")
+        .with_stderr("")
+        .run();
+
+    // Array value.
+    cargo_process("config get build.rustflags -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stdout("build.rustflags = [\"--flag-directory\", \"--flag-global\"]")
+        .with_stderr("")
+        .run();
+
+    // Sub-table
+    cargo_process("config get profile -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stdout(
+            "\
+profile.dev.opt-level = 3
+profile.dev.package.foo.opt-level = 1
+",
+        )
+        .with_stderr("")
+        .run();
+
+    // Specific profile entry.
+    cargo_process("config get profile.dev.opt-level -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stdout("profile.dev.opt-level = 3")
+        .with_stderr("")
+        .run();
+
+    // A key that isn't set.
+    cargo_process("config get build.rustc -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stdout("")
+        .with_stderr("error: config value `build.rustc` is not set")
+        .run();
+
+    // A key that is not part of Cargo's config schema.
+    cargo_process("config get not.set -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stdout("")
+        .with_stderr("error: config value `not.set` is not set")
+        .run();
+}
+
+#[cargo_test]
+fn get_json() {
+    // Notes:
+    // - This does not show env vars at all. :(
+    let all_json = r#"
+            {
+              "alias": {
+                "foo": "abc --xyz",
+                "sub-example": [
+                  "sub",
+                  "example"
+                ]
+              },
+              "build": {
+                "jobs": 99,
+                "rustflags": [
+                  "--flag-directory",
+                  "--flag-global"
+                ]
+              },
+              "extra-table": {
+                "somekey": "somevalue"
+              },
+              "profile": {
+                "dev": {
+                  "opt-level": 3,
+                  "package": {
+                    "foo": {
+                      "opt-level": 1
+                    }
+                  }
+                }
+              },
+              "target": {
+                "cfg(target_os = \"linux\")": {
+                  "runner": "runme"
+                }
+              }
+            }
+            "#;
+    let sub_folder = common_setup();
+    cargo_process("config get --format=json -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_ALIAS_BAR", "cat dog")
+        .env("CARGO_BUILD_JOBS", "100")
+        .with_json(all_json)
+        .with_stderr(
+            "\
+note: The following environment variables may affect the loaded values.
+CARGO_ALIAS_BAR=[..]cat dog[..]
+CARGO_BUILD_JOBS=100
+CARGO_HOME=[ROOT]/home/.cargo
+",
+        )
+        .run();
+
+    // json-value is the same for the entire root table
+    cargo_process("config get --format=json-value -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_json(all_json)
+        .with_stderr(
+            "\
+note: The following environment variables may affect the loaded values.
+CARGO_HOME=[ROOT]/home/.cargo
+",
+        )
+        .run();
+
+    cargo_process("config get --format=json build.jobs -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_json(
+            r#"
+            {"build": {"jobs": 99}}
+            "#,
+        )
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --format=json-value build.jobs -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stdout("99")
+        .with_stderr("")
+        .run();
+}
+
+#[cargo_test]
+fn show_origin_toml() {
+    let sub_folder = common_setup();
+    cargo_process("config get --show-origin -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stdout(
+            "\
+alias.foo = \"abc --xyz\" # [ROOT]/home/.cargo/config.toml
+alias.sub-example = [
+    \"sub\", # [ROOT]/foo/.cargo/config.toml
+    \"example\", # [ROOT]/foo/.cargo/config.toml
+]
+build.jobs = 99 # [ROOT]/home/.cargo/config.toml
+build.rustflags = [
+    \"--flag-directory\", # [ROOT]/foo/.cargo/config.toml
+    \"--flag-global\", # [ROOT]/home/.cargo/config.toml
+]
+extra-table.somekey = \"somevalue\" # [ROOT]/home/.cargo/config.toml
+profile.dev.opt-level = 3 # [ROOT]/home/.cargo/config.toml
+profile.dev.package.foo.opt-level = 1 # [ROOT]/home/.cargo/config.toml
+target.\"cfg(target_os = \\\"linux\\\")\".runner = \"runme\" # [ROOT]/home/.cargo/config.toml
+# The following environment variables may affect the loaded values.
+# CARGO_HOME=[ROOT]/home/.cargo
+",
+        )
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --show-origin build.rustflags -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_RUSTFLAGS", "env1 env2")
+        .with_stdout(
+            "\
+build.rustflags = [
+    \"--flag-directory\", # [ROOT]/foo/.cargo/config.toml
+    \"--flag-global\", # [ROOT]/home/.cargo/config.toml
+    \"env1\", # environment variable `CARGO_BUILD_RUSTFLAGS`
+    \"env2\", # environment variable `CARGO_BUILD_RUSTFLAGS`
+]
+",
+        )
+        .with_stderr("")
+        .run();
+}
+
+#[cargo_test]
+fn show_origin_toml_cli() {
+    let sub_folder = common_setup();
+    cargo_process("config get --show-origin build.jobs -Zunstable-options --config build.jobs=123")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_JOBS", "1")
+        .with_stdout("build.jobs = 123 # --config cli option")
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --show-origin build.rustflags -Zunstable-options --config")
+        .arg("build.rustflags=[\"cli1\",\"cli2\"]")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_RUSTFLAGS", "env1 env2")
+        .with_stdout(
+            "\
+build.rustflags = [
+    \"--flag-directory\", # [ROOT]/foo/.cargo/config.toml
+    \"--flag-global\", # [ROOT]/home/.cargo/config.toml
+    \"cli1\", # --config cli option
+    \"cli2\", # --config cli option
+    \"env1\", # environment variable `CARGO_BUILD_RUSTFLAGS`
+    \"env2\", # environment variable `CARGO_BUILD_RUSTFLAGS`
+]
+",
+        )
+        .with_stderr("")
+        .run();
+}
+
+#[cargo_test]
+fn show_origin_json() {
+    let sub_folder = common_setup();
+    cargo_process("config get --show-origin --format=json -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stderr("error: the `json` format does not support --show-origin, try the `toml` format instead")
+        .run();
+}
+
+#[cargo_test]
+fn unmerged_toml() {
+    let sub_folder = common_setup();
+    cargo_process("config get --merged=no -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_ALIAS_BAR", "cat dog")
+        .env("CARGO_BUILD_JOBS", "100")
+        .with_stdout(
+            "\
+# Environment variables
+# CARGO=[..]
+# CARGO_ALIAS_BAR=[..]cat dog[..]
+# CARGO_BUILD_JOBS=100
+# CARGO_HOME=[ROOT]/home/.cargo
+
+# [ROOT]/foo/.cargo/config.toml
+alias.sub-example = [\"sub\", \"example\"]
+build.rustflags = [\"--flag-directory\"]
+
+# [ROOT]/home/.cargo/config.toml
+alias.foo = \"abc --xyz\"
+build.jobs = 99
+build.rustflags = [\"--flag-global\"]
+extra-table.somekey = \"somevalue\"
+profile.dev.opt-level = 3
+profile.dev.package.foo.opt-level = 1
+target.\"cfg(target_os = \\\"linux\\\")\".runner = \"runme\"
+
+",
+        )
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --merged=no build.rustflags -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_RUSTFLAGS", "env1 env2")
+        .with_stdout(
+            "\
+# Environment variables
+# CARGO_BUILD_RUSTFLAGS=[..]env1 env2[..]
+
+# [ROOT]/foo/.cargo/config.toml
+build.rustflags = [\"--flag-directory\"]
+
+# [ROOT]/home/.cargo/config.toml
+build.rustflags = [\"--flag-global\"]
+
+",
+        )
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --merged=no does.not.exist -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_stderr("")
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --merged=no build.rustflags.extra -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stderr(
+            "error: expected table for configuration key `build.rustflags`, \
+             but found array in [ROOT]/foo/.cargo/config.toml",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn unmerged_toml_cli() {
+    let sub_folder = common_setup();
+    cargo_process("config get --merged=no build.rustflags -Zunstable-options --config")
+        .arg("build.rustflags=[\"cli1\",\"cli2\"]")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .env("CARGO_BUILD_RUSTFLAGS", "env1 env2")
+        .with_stdout(
+            "\
+# --config cli option
+build.rustflags = [\"cli1\", \"cli2\"]
+
+# Environment variables
+# CARGO_BUILD_RUSTFLAGS=[..]env1 env2[..]
+
+# [ROOT]/foo/.cargo/config.toml
+build.rustflags = [\"--flag-directory\"]
+
+# [ROOT]/home/.cargo/config.toml
+build.rustflags = [\"--flag-global\"]
+
+",
+        )
+        .with_stderr("")
+        .run();
+}
+
+#[cargo_test]
+fn unmerged_json() {
+    let sub_folder = common_setup();
+    cargo_process("config get --merged=no --format=json -Zunstable-options")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config"])
+        .with_status(101)
+        .with_stderr(
+            "error: the `json` format does not support --merged=no, try the `toml` format instead",
+        )
+        .run();
+}
+
+#[cargo_test]
+fn includes() {
+    let sub_folder = common_setup();
+    fs::write(
+        sub_folder.join("config.toml"),
+        "
+        include = 'other.toml'
+        [build]
+        rustflags = [\"--flag-directory\"]
+        ",
+    )
+    .unwrap();
+    fs::write(
+        sub_folder.join("other.toml"),
+        "
+        [build]
+        rustflags = [\"--flag-other\"]
+        ",
+    )
+    .unwrap();
+
+    cargo_process("config get build.rustflags -Zunstable-options -Zconfig-include")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config", "config-include"])
+        .with_stdout(r#"build.rustflags = ["--flag-other", "--flag-directory", "--flag-global"]"#)
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get build.rustflags --show-origin -Zunstable-options -Zconfig-include")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config", "config-include"])
+        .with_stdout(
+            "\
+build.rustflags = [
+    \"--flag-other\", # [ROOT]/foo/.cargo/other.toml
+    \"--flag-directory\", # [ROOT]/foo/.cargo/config.toml
+    \"--flag-global\", # [ROOT]/home/.cargo/config.toml
+]
+",
+        )
+        .with_stderr("")
+        .run();
+
+    cargo_process("config get --merged=no -Zunstable-options -Zconfig-include")
+        .cwd(&sub_folder.parent().unwrap())
+        .masquerade_as_nightly_cargo(&["cargo-config", "config-include"])
+        .with_stdout(
+            "\
+# Environment variables
+# CARGO=[..]
+# CARGO_HOME=[ROOT]/home/.cargo
+
+# [ROOT]/foo/.cargo/other.toml
+build.rustflags = [\"--flag-other\"]
+
+# [ROOT]/foo/.cargo/config.toml
+build.rustflags = [\"--flag-directory\"]
+include = \"other.toml\"
+
+# [ROOT]/home/.cargo/config.toml
+alias.foo = \"abc --xyz\"
+build.jobs = 99
+build.rustflags = [\"--flag-global\"]
+extra-table.somekey = \"somevalue\"
+profile.dev.opt-level = 3
+profile.dev.package.foo.opt-level = 1
+target.\"cfg(target_os = \\\"linux\\\")\".runner = \"runme\"
+
+",
+        )
+        .with_stderr("")
+        .run();
+}