add stubs tests (VKCOM#69)

* add stub tests

* add todo

* update kphp-template test

* use `KphpStormTestBase` as a base class for `StubTestBase`

* Add missing tests

* backport new approach to walt a stub tree

Author: vldF

src/main/kotlin/com/vk/kphpstorm/kphptags/psi/KphpDocTagStubImpl.kt

@@ -11,6 +11,8 @@ import com.jetbrains.php.lang.psi.resolve.types.PhpType
  * When @kphp-... tags (regardless of elementType) are stored as stubs,
  * they hold only name and optional arbitrary string value.
  * Similar to [com.jetbrains.php.lang.documentation.phpdoc.psi.stubs.PhpDocTagStubImpl]
+ *
+ * TODO: make a research to check are we really need stubs?
  */
 class KphpDocTagStubImpl(
         parent: StubElement<*>?,
@@ -22,4 +24,6 @@ class KphpDocTagStubImpl(
     override fun getType() = PhpType()
     override fun getName() = name
     override fun getValue() = value
+
+    override fun toString(): String = "$name${if (value != null) ": $value" else ""}"
 }

src/test/fixtures/kphp_stub/kphp-json.fixture.php

@@ -0,0 +1,12 @@
+<?php
+
+/**
+ * @kphp-json rename_policy=camelCase
+ */
+class C {
+    /**
+     * @kphp-json float_precision=1
+     * @kphp-json required
+     */
+    public float $field;
+}

src/test/fixtures/kphp_stub/kphp-json.stub.php

@@ -0,0 +1,9 @@
+PhpFileStubImpl
+  DOC_COMMENT:PhpDocCommentStubImpl
+    @kphp-json {name: @kphp-json}:@kphp-json
+  CLASS:PhpClassStubImpl{C}
+    DOC_COMMENT:PhpDocCommentStubImpl
+      @kphp-json {name: @kphp-json}:@kphp-json
+      @kphp-json {name: @kphp-json}:@kphp-json
+    CLASS_FIELDS:PhpClassFieldListStubImpl
+      CLASS_FIELD:PhpFieldStubImpl

src/test/fixtures/kphp_stub/kphp-serialize.fixture.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * @kphp-serializable
+ * @kphp-reserved-fields [2]
+ */
+class C {
+    /**
+     * @kphp-serialized-float32 arg
+     */
+    public float $field0;
+
+    /**
+     * @kphp-serialized-field 1
+     */
+    public float $field1;
+
+    /**
+     * @kphp-serialized-field 3
+     */
+    public int $field3;
+}

src/test/fixtures/kphp_stub/kphp-serialize.stub.php

@@ -0,0 +1,17 @@
+PhpFileStubImpl
+  DOC_COMMENT:PhpDocCommentStubImpl
+    @kphp-... {name: @kphp-serializable}:@kphp-serializable
+    @kphp-... {name: @kphp-reserved-fields}:@kphp-reserved-fields
+  CLASS:PhpClassStubImpl{C}
+    DOC_COMMENT:PhpDocCommentStubImpl
+      @kphp-... {name: @kphp-serialized-float32}:@kphp-serialized-float32
+    CLASS_FIELDS:PhpClassFieldListStubImpl
+      CLASS_FIELD:PhpFieldStubImpl
+    DOC_COMMENT:PhpDocCommentStubImpl
+      @kphp-... {name: @kphp-serialized-field}:@kphp-serialized-field
+    CLASS_FIELDS:PhpClassFieldListStubImpl
+      CLASS_FIELD:PhpFieldStubImpl
+    DOC_COMMENT:PhpDocCommentStubImpl
+      @kphp-... {name: @kphp-serialized-field}:@kphp-serialized-field
+    CLASS_FIELDS:PhpClassFieldListStubImpl
+      CLASS_FIELD:PhpFieldStubImpl

src/test/fixtures/kphp_stub/kphp-simple-tags.fixture.php

@@ -0,0 +1,9 @@
+<?php
+/**
+ * @kphp-throws \Exception
+ * @kphp-color red
+ * @kphp-required
+ * @kphp-inline
+ * @kphp-profile
+ */
+function test($arg1, $arg2) { }

src/test/fixtures/kphp_stub/kphp-simple-tags.stub.php

@@ -0,0 +1,10 @@
+PhpFileStubImpl
+  DOC_COMMENT:PhpDocCommentStubImpl
+    @kphp-... {name: @kphp-throws}:@kphp-throws
+    @kphp-... {name: @kphp-color}:@kphp-color
+    @kphp-... {name: @kphp-required}:@kphp-required
+    @kphp-... {name: @kphp-inline}:@kphp-inline
+    @kphp-... {name: @kphp-profile}:@kphp-profile
+  FUNCTION:PhpFunctionStubImpl
+    NOT_PROMOTED_PARAMETER:PhpParameterStubImpl
+    NOT_PROMOTED_PARAMETER:PhpParameterStubImpl

src/test/fixtures/kphp_stub/kphp-template.fixture.php

@@ -0,0 +1,5 @@
+<?php
+/**
+* @kphp-template-class int,string
+*/
+class C { }

src/test/fixtures/kphp_stub/kphp-template.stub.php

@@ -0,0 +1,4 @@
+PhpFileStubImpl
+  DOC_COMMENT:PhpDocCommentStubImpl
+    @kphp-template-class {name: @kphp-template-class, value: int,string}:@kphp-template-class: int,string
+  CLASS:PhpClassStubImpl{C}

src/test/fixtures/kphp_stub/kphp-warn-performance.fixture.php

@@ -0,0 +1,4 @@
+<?php
+
+/** @kphp-warn-performance all */
+function test() { }