1 files changed, 236 insertions, 0 deletions
diff --git a/src/tools/cargo/tests/testsuite/direct_minimal_versions.rs b/src/tools/cargo/tests/testsuite/direct_minimal_versions.rs
new file mode 100644
index 000000000..0e62d6ce0
--- /dev/null
+++ b/src/tools/cargo/tests/testsuite/direct_minimal_versions.rs
@@ -0,0 +1,236 @@
+//! Tests for minimal-version resolution.
+//!
+//! Note: Some tests are located in the resolver-tests package.
+
+use cargo_test_support::project;
+use cargo_test_support::registry::Package;
+
+#[cargo_test]
+fn simple() {
+    Package::new("dep", "1.0.0").publish();
+    Package::new("dep", "1.1.0").publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                authors = []
+                version = "0.0.1"
+
+                [dependencies]
+                dep = "1.0"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("generate-lockfile -Zdirect-minimal-versions")
+        .masquerade_as_nightly_cargo(&["direct-minimal-versions"])
+        .run();
+
+    let lock = p.read_lockfile();
+
+    assert!(
+        lock.contains("1.0.0"),
+        "dep minimal version must be present"
+    );
+    assert!(
+        !lock.contains("1.1.0"),
+        "dep maximimal version cannot be present"
+    );
+}
+
+#[cargo_test]
+fn mixed_dependencies() {
+    Package::new("dep", "1.0.0").publish();
+    Package::new("dep", "1.1.0").publish();
+    Package::new("dep", "1.2.0").publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                authors = []
+                version = "0.0.1"
+
+                [dependencies]
+                dep = "1.0"
+
+                [dev-dependencies]
+                dep = "1.1"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("generate-lockfile -Zdirect-minimal-versions")
+        .masquerade_as_nightly_cargo(&["direct-minimal-versions"])
+        .with_status(101)
+        .with_stderr(
+            r#"[UPDATING] [..]
+[ERROR] failed to select a version for `dep`.
+    ... required by package `foo v0.0.1 ([CWD])`
+versions that meet the requirements `^1.1` are: 1.1.0
+
+all possible versions conflict with previously selected packages.
+
+  previously selected package `dep v1.0.0`
+    ... which satisfies dependency `dep = "^1.0"` of package `foo v0.0.1 ([CWD])`
+
+failed to select a version for `dep` which could resolve this conflict
+"#,
+        )
+        .run();
+}
+
+#[cargo_test]
+fn yanked() {
+    Package::new("dep", "1.0.0").yanked(true).publish();
+    Package::new("dep", "1.1.0").publish();
+    Package::new("dep", "1.2.0").publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                authors = []
+                version = "0.0.1"
+
+                [dependencies]
+                dep = "1.0"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("generate-lockfile -Zdirect-minimal-versions")
+        .masquerade_as_nightly_cargo(&["direct-minimal-versions"])
+        .run();
+
+    let lock = p.read_lockfile();
+
+    assert!(
+        lock.contains("1.1.0"),
+        "dep minimal version must be present"
+    );
+    assert!(
+        !lock.contains("1.0.0"),
+        "yanked minimal version must be skipped"
+    );
+    assert!(
+        !lock.contains("1.2.0"),
+        "dep maximimal version cannot be present"
+    );
+}
+
+#[cargo_test]
+fn indirect() {
+    Package::new("indirect", "2.0.0").publish();
+    Package::new("indirect", "2.1.0").publish();
+    Package::new("indirect", "2.2.0").publish();
+    Package::new("direct", "1.0.0")
+        .dep("indirect", "2.1")
+        .publish();
+    Package::new("direct", "1.1.0")
+        .dep("indirect", "2.1")
+        .publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                authors = []
+                version = "0.0.1"
+
+                [dependencies]
+                direct = "1.0"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("generate-lockfile -Zdirect-minimal-versions")
+        .masquerade_as_nightly_cargo(&["direct-minimal-versions"])
+        .run();
+
+    let lock = p.read_lockfile();
+
+    assert!(
+        lock.contains("1.0.0"),
+        "direct minimal version must be present"
+    );
+    assert!(
+        !lock.contains("1.1.0"),
+        "direct maximimal version cannot be present"
+    );
+    assert!(
+        !lock.contains("2.0.0"),
+        "indirect minimal version cannot be present"
+    );
+    assert!(
+        !lock.contains("2.1.0"),
+        "indirect minimal version cannot be present"
+    );
+    assert!(
+        lock.contains("2.2.0"),
+        "indirect maximal version must be present"
+    );
+}
+
+#[cargo_test]
+fn indirect_conflict() {
+    Package::new("indirect", "2.0.0").publish();
+    Package::new("indirect", "2.1.0").publish();
+    Package::new("indirect", "2.2.0").publish();
+    Package::new("direct", "1.0.0")
+        .dep("indirect", "2.1")
+        .publish();
+    Package::new("direct", "1.1.0")
+        .dep("indirect", "2.1")
+        .publish();
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                authors = []
+                version = "0.0.1"
+
+                [dependencies]
+                direct = "1.0"
+                indirect = "2.0"
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("generate-lockfile -Zdirect-minimal-versions")
+        .masquerade_as_nightly_cargo(&["direct-minimal-versions"])
+        .with_status(101)
+        .with_stderr(
+            r#"[UPDATING] [..]
+[ERROR] failed to select a version for `indirect`.
+    ... required by package `direct v1.0.0`
+    ... which satisfies dependency `direct = "^1.0"` of package `foo v0.0.1 ([CWD])`
+versions that meet the requirements `^2.1` are: 2.2.0, 2.1.0
+
+all possible versions conflict with previously selected packages.
+
+  previously selected package `indirect v2.0.0`
+    ... which satisfies dependency `indirect = "^2.0"` of package `foo v0.0.1 ([CWD])`
+
+failed to select a version for `indirect` which could resolve this conflict
+"#,
+        )
+        .run();
+}