diff --git a/test/pr2642-cache-db/.gitignore b/test/pr2642-cache-db/.gitignore
new file mode 100644
index 0000000..da01cd6
--- /dev/null
+++ b/test/pr2642-cache-db/.gitignore
@@ -0,0 +1,2 @@
+dubhome/
+pr2642-cache-db
diff --git a/test/pr2642-cache-db/.no_test b/test/pr2642-cache-db/.no_test
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/pr2642-cache-db/.no_test
diff --git a/test/pr2642-cache-db/dub.sdl b/test/pr2642-cache-db/dub.sdl
new file mode 100644
index 0000000..f9fca89
--- /dev/null
+++ b/test/pr2642-cache-db/dub.sdl
@@ -0,0 +1,2 @@
+name "pr2642-cache-db";
+targetType "executable";
diff --git a/test/pr2642-cache-db/source/test_cache_db.d b/test/pr2642-cache-db/source/test_cache_db.d
new file mode 100644
index 0000000..662954d
--- /dev/null
+++ b/test/pr2642-cache-db/source/test_cache_db.d
@@ -0,0 +1,78 @@
+module test_cache_db;
+
+import std.path;
+import std.file;
+import std.process;
+import std.stdio;
+import std.json;
+
+void main()
+{
+    const dubhome = __FILE_FULL_PATH__.dirName().dirName().buildNormalizedPath("dubhome");
+    if (exists(dubhome))
+    {
+        rmdirRecurse(dubhome);
+    }
+
+    const string[string] env = [
+        "DUB_HOME": dubhome,
+    ];
+    const fetchProgram = [
+        environment["DUB"],
+        "fetch",
+        "vibe-d@0.9.6",
+    ];
+    auto dubFetch = spawnProcess(fetchProgram, stdin, stdout, stderr, env);
+    wait(dubFetch);
+    const buildProgram = [
+        environment["DUB"],
+        "build",
+        "--build=debug",
+        "vibe-d:http@0.9.6",
+    ];
+    auto dubBuild = spawnProcess(buildProgram, stdin, stdout, stderr, env);
+    wait(dubBuild);
+
+    scope (success)
+    {
+        // leave dubhome in the tree for analysis in case of failure
+        rmdirRecurse(dubhome);
+    }
+
+    const buildDbPath = buildNormalizedPath(dubhome, "cache", "vibe-d", "0.9.6", "+http", "db.json");
+    assert(exists(buildDbPath), buildDbPath ~ " should exist");
+    const buildDbStr = readText(buildDbPath);
+    auto json = parseJSON(buildDbStr);
+    assert(json.type == JSONType.array, "build db should be an array");
+    assert(json.array.length == 1);
+    auto db = json.array[0].object;
+
+    void assertArray(string field)
+    {
+        assert(field in db, "db.json should have an array field " ~ field);
+        assert(db[field].type == JSONType.array, "expected field " ~ field ~ " to be an array");
+    }
+
+    void assertString(string field, string value = null)
+    {
+        assert(field in db, "db.json should have an string field " ~ field);
+        assert(db[field].type == JSONType.string, "expected field " ~ field ~ " to be a string");
+        if (value)
+            assert(db[field].str == value, "expected field " ~ field ~ " to equal " ~ value);
+    }
+
+    assertArray("architecture");
+    assertString("buildId");
+    assertString("buildType", "debug");
+    assertString("compiler");
+    assertString("compilerBinary");
+    assertString("compilerVersion");
+    assertString("configuration", "library");
+    assertString("package", "vibe-d:http");
+    assertArray("platform");
+    assertString("targetBinaryPath");
+    assertString("version", "0.9.6");
+
+    const binName = db["targetBinaryPath"].str;
+    assert(isFile(binName), "expected " ~ binName ~ " to be a file.");
+}