Extract ZipPaths for splitting and joining zip paths

1 files changed, 49 insertions, 0 deletions

diff --git a/src/test/java/org/zwobble/mammoth/tests/archives/ZipPathsTests.java b/src/test/java/org/zwobble/mammoth/tests/archives/ZipPathsTests.java
new file mode 100644
index 0000000..88d613f
--- /dev/null
+++ b/src/test/java/org/zwobble/mammoth/tests/archives/ZipPathsTests.java
@@ -0,0 +1,49 @@
+package org.zwobble.mammoth.tests.archives;
+
+import org.hamcrest.Matcher;
+import org.junit.jupiter.api.Test;
+import org.zwobble.mammoth.internal.archives.ZipPaths;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.zwobble.mammoth.tests.DeepReflectionMatcher.deepEquals;
+
+public class ZipPathsTests {
+    @Test
+    public void splitPathSplitZipPathsOnLastForwardSlash() {
+        assertThat(ZipPaths.splitPath("a/b"), isSplitPath("a", "b"));
+        assertThat(ZipPaths.splitPath("a/b/c"), isSplitPath("a/b", "c"));
+        assertThat(ZipPaths.splitPath("/a/b/c"), isSplitPath("/a/b", "c"));
+    }
+
+    @Test
+    public void whenPathHasNoForwardSlashesThenSplitPathReturnsEmptyDirname() {
+        assertThat(ZipPaths.splitPath("name"), isSplitPath("", "name"));
+    }
+
+    private Matcher<ZipPaths.SplitPath> isSplitPath(String dirname, String basename) {
+        return deepEquals(new ZipPaths.SplitPath(dirname, basename));
+    }
+
+    @Test
+    public void joinPathJoinsArgumentsWithForwardSlashes() {
+        assertThat(ZipPaths.joinPath("a", "b"), equalTo("a/b"));
+        assertThat(ZipPaths.joinPath("a/b", "c"), equalTo("a/b/c"));
+        assertThat(ZipPaths.joinPath("/a/b", "c"), equalTo("/a/b/c"));
+    }
+
+    @Test
+    public void emptyPartsAreIgnoredWhenJoiningPaths() {
+        assertThat(ZipPaths.joinPath("a", ""), equalTo("a"));
+        assertThat(ZipPaths.joinPath("", "b"), equalTo("b"));
+        assertThat(ZipPaths.joinPath("a", "", "b"), equalTo("a/b"));
+    }
+
+    @Test
+    public void whenJoiningPathsThenAbsolutePathsIgnoreEarlierPaths() {
+        assertThat(ZipPaths.joinPath("a", "/b"), equalTo("/b"));
+        assertThat(ZipPaths.joinPath("a", "/b", "c"), equalTo("/b/c"));
+        assertThat(ZipPaths.joinPath("/a", "/b"), equalTo("/b"));
+        assertThat(ZipPaths.joinPath("/a"), equalTo("/a"));
+    }
+}