1 files changed, 104 insertions, 0 deletions
diff --git a/src/test/kotlin/io/PathTest.kt b/src/test/kotlin/io/PathTest.kt
new file mode 100644
index 0000000..9ba8a9e
--- /dev/null
+++ b/src/test/kotlin/io/PathTest.kt
@@ -0,0 +1,104 @@
+package io
+
+import io.kotest.assertions.assertSoftly
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.data.forAll
+import io.kotest.data.row
+import io.kotest.matchers.be
+import io.kotest.matchers.should
+import io.kotest.matchers.shouldBe
+import io.kotest.matchers.types.beOfType
+import io.kotest.matchers.types.shouldBeTypeOf
+
+class PathTest : FunSpec({
+	val homeDir = Path.of("/home") as Path.Absolute
+	test("recognize relative paths as such") {
+		forAll(
+			row(Path.of("a/b")),
+			row(Path.of(".")),
+			row(Path.of("a", "b")),
+			row(Path.ofShell("a/b", userHome = homeDir)),
+			row(Path.ofShell(".", userHome = homeDir)),
+			row(Path.ofShell("a", "b", userHome = homeDir)),
+			row(Path.ofShell(listOf("a", "b"), userHome = homeDir)),
+		) {
+			assertSoftly(it) { shouldBeTypeOf<Path.Relative>() }
+		}
+	}
+	test("recognize absolute paths as such") {
+		forAll(
+			row(Path.of("/a/b")),
+			row(Path.of("/")),
+			row(Path.ofShell("/b/c", userHome = homeDir)),
+		) {
+			assertSoftly(it) { shouldBeTypeOf<Path.Absolute>() }
+		}
+	}
+	test("Path.of(x).stringPath == x") {
+		forAll(
+			row("/"),
+			row("/a/b"),
+			row("a/b"),
+			row("."),
+		) { name ->
+			assertSoftly(Path.of(name).stringPath) {
+				shouldBe(name)
+			}
+			assertSoftly(Path.ofShell(name, homeDir).stringPath) {
+				shouldBe(name)
+			}
+		}
+	}
+	test("Shell resolution of home directory") {
+		forAll(
+			row("~/a", "/home/a"),
+			row("~", "/home"),
+			row("~/.", "/home/."),
+			row("/a", "/a"),
+			row("a", "a"),
+		) { a, b ->
+			assertSoftly(Path.ofShell(a, homeDir).stringPath) {
+				shouldBe(b)
+			}
+		}
+	}
+	test("Relative path resolution works") {
+		forAll(
+			row("/a/b", "c/d", "/a/b/c/d"),
+			row("/a/b", "/c/d", "/c/d"),
+			row("/a/", "c", "/a/c"),
+		) { a, b, c ->
+			val x = Path.of(a)
+			val y = Path.of(b)
+			val z = x.resolve(y)
+			assertSoftly {
+				x should beOfType<Path.Absolute>()
+				z should beOfType<Path.Absolute>()
+				z.stringPath should be(c)
+			}
+		}
+	}
+	test("Equality checks should work") {
+		forAll(
+			row("a"),
+			row("a/b"),
+			row("/a/b"),
+			row("c//d")
+		) {
+			assertSoftly {
+				Path.of(it) should be(Path.of(it))
+			}
+		}
+	}
+	test("relaitivization works") {
+		forAll(
+			row("/a/b", "/a", ".."),
+			row("/a", "/a/b", "b"),
+			row("/a/b", "/a/c", "../c"),
+		) { a, b, c ->
+			assertSoftly {
+				Path.of(a).shouldBeTypeOf<Path.Absolute>().relativize(Path.of(b)) shouldBe Path.of(c)
+			}
+		}
+	}
+})