TypeError behoben rückgabewert null durch einen leeren string ersetzt

src/class.StringBuilder.php

@@ -115,7 +115,7 @@ class StringBuilder {
      * @return string Wert der Variablen als String.
      */
     public function getVar(string $key) : string {
-        return $this->vars[trim($key)];
+        return $this->vars[trim($key)] ?? "";
     }
 
     /**

tests/test.class.StringBuilder.php

@@ -50,4 +50,73 @@ class StringBuilderTest extends TestCase {
         $this->assertEquals($sb->join(), "test1;test2");
     }
 
+    public function testJoinAfterAppendUniqueString() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->append("test1")->append("test2")->appendUnique("test1");
+        $sb->setSeperator(";");
+        $sb->append("test3");
+        $this->assertEquals($sb->join(), "test1;test2;test3");
+    }
+
+    public function testJoinAfterAppendDuplicateString() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->append("test1")->append("test2")->append("test1");
+        $sb->setSeperator(";");
+        $sb->append("test3");
+        $this->assertEquals($sb->join(), "test1;test2;test1;test3");
+    }
+
+    public function testPrependString() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->prepend("test1")->prepend("test2");
+        $this->assertEquals($sb->getParts(), ["test2", "test1"]);
+    }
+
+    public function testPrependUniqueString() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->prependUnique("test1")->prepend("test2")->prependUnique("test1");
+        $this->assertEquals($sb->getParts(), ["test2", "test1"]);
+    }
+
+    public function testPrependStringInitUnique() {
+        $sb = new \NAE\String\StringBuilder(true);
+        $sb->prepend("test1")->prepend("test2")->prepend("test1");
+        $this->assertEquals($sb->getParts(), ["test2", "test1"]);
+    }
+
+    public function testPrependDuplicateString() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->prepend("test1")->prepend("test2")->prepend("test1");
+        $this->assertEquals($sb->getParts(), ["test2", "test1"]);
+    }
+
+    public function testSuffix() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->setVarSuffix("%%");
+        $this->assertEquals($sb->getVarSuffix(), "%%");
+    }
+
+    public function testPrefix() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->setVarPrefix("%%");
+        $this->assertEquals($sb->getVarPrefix(), "%%");
+    }
+
+    public function testVariables() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->setVar("t1", "test1")->setVar("t2", "test2");
+        $this->assertEquals($sb->getVars(), ["t1" => "test1", "t2" => "test2"]);
+        $this->assertEquals($sb->getVar("t1"), "test1");
+        $this->assertEquals($sb->getVar("t2"), "test2");
+        $this->assertEquals($sb->getVar("t3"), "");
+    }
+
+    public function testHasVar() {
+        $sb = new \NAE\String\StringBuilder();
+        $sb->setVar("t1", "test1")->setVar("t2", "test2");
+        $this->assertTrue($sb->hasVar("t1"));
+        $this->assertTrue($sb->hasVar("t2"));
+        $this->assertFalse($sb->hasVar("t3"));
+    }
+
 }