From e01cb693bc5737792e2b37abfd98d2d8f81bac4d Mon Sep 17 00:00:00 2001
From: Akshay Nair <phenax5@gmail.com>
Date: Thu, 10 Aug 2023 22:45:00 +0530
Subject: feat: adds simple evaluator

---
 tests/eval.spec.ts       | 29 ++++++++++++++++++
 tests/parse-expr.spec.ts | 76 ------------------------------------------------
 tests/parser.spec.ts     | 76 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 105 insertions(+), 76 deletions(-)
 create mode 100644 tests/eval.spec.ts
 delete mode 100644 tests/parse-expr.spec.ts
 create mode 100644 tests/parser.spec.ts

(limited to 'tests')

diff --git a/tests/eval.spec.ts b/tests/eval.spec.ts
new file mode 100644
index 0000000..63062e3
--- /dev/null
+++ b/tests/eval.spec.ts
@@ -0,0 +1,29 @@
+import { Dependencies, evalExpr } from '../src/eval'
+import { Expr } from '../src/parser'
+
+describe('eval', () => {
+  const deps: Dependencies = {
+    addClass: jest.fn(),
+    removeClass: jest.fn(),
+  }
+
+  it('should add classes', async () => {
+    await evalExpr(Expr.Call({
+      name: 'add-class',
+      args: [ Expr.Identifier('element-id'), Expr.LiteralString('class-name') ],
+    }), deps)
+
+    expect(deps.addClass).toHaveBeenCalledTimes(1)
+    expect(deps.addClass).toHaveBeenCalledWith('element-id', 'class-name')
+  })
+
+  it('should add classes', async () => {
+    await evalExpr(Expr.Call({
+      name: 'remove-class',
+      args: [ Expr.Identifier('element-id'), Expr.LiteralString('class-name') ],
+    }), deps)
+
+    expect(deps.removeClass).toHaveBeenCalledTimes(1)
+    expect(deps.removeClass).toHaveBeenCalledWith('element-id', 'class-name')
+  })
+})
diff --git a/tests/parse-expr.spec.ts b/tests/parse-expr.spec.ts
deleted file mode 100644
index f873464..0000000
--- a/tests/parse-expr.spec.ts
+++ /dev/null
@@ -1,76 +0,0 @@
-import { Expr, parse } from '../src/parse-expr'
-
-describe('parser', () => {
-  it('should parse function call', () => {
-    expect(parse('hello()')).toEqual([Expr.Call({ name: 'hello', args: [] })])
-    expect(parse('hello ( wow , foo ) ')).toEqual([
-      Expr.Call({
-        name: 'hello',
-        args: [Expr.Identifier('wow'), Expr.Identifier('foo')],
-      }),
-    ])
-    expect(parse('hello(wow,foo)')).toEqual([
-      Expr.Call({
-        name: 'hello',
-        args: [Expr.Identifier('wow'), Expr.Identifier('foo')],
-      }),
-    ])
-    expect(parse('hello(wow,foo, coolio)')).toEqual([
-      Expr.Call({
-        name: 'hello',
-        args: [
-          Expr.Identifier('wow'),
-          Expr.Identifier('foo'),
-          Expr.Identifier('coolio'),
-        ],
-      }),
-    ])
-    expect(parse('hello(wow)')).toEqual([
-      Expr.Call({ name: 'hello', args: [Expr.Identifier('wow')] }),
-    ])
-  })
-
-  it('should parse sequential function calls', () => {
-    expect(parse('hello(world) foo-doo(bar, baz)')).toEqual([
-      Expr.Call({
-        name: 'hello',
-        args: [Expr.Identifier('world')],
-      }),
-      Expr.Call({
-        name: 'foo-doo',
-        args: [Expr.Identifier('bar'), Expr.Identifier('baz')],
-      }),
-    ])
-  })
-
-  it('should parse string literal', () => {
-    expect(parse(`"hello world toodles \' nice single quote there"`)).toEqual([
-      Expr.LiteralString(`hello world toodles \' nice single quote there`),
-    ])
-
-    expect(parse(` 'hello world toodles \" nice double quote there' `)).toEqual(
-      [Expr.LiteralString(`hello world toodles \" nice double quote there`)]
-    )
-  })
-
-  it('should parse var identifiers', () => {
-    expect(parse(`var(--hello, 'default')`)).toEqual([
-      Expr.Call({
-        name: 'var',
-        args: [Expr.VarIdentifier('--hello'), Expr.LiteralString(`default`)],
-      }),
-    ])
-
-    expect(parse(`calc(var(--hello))`)).toEqual([
-      Expr.Call({
-        name: 'calc',
-        args: [
-          Expr.Call({
-            name: 'var',
-            args: [Expr.VarIdentifier('--hello')],
-          }),
-        ],
-      }),
-    ])
-  })
-})
diff --git a/tests/parser.spec.ts b/tests/parser.spec.ts
new file mode 100644
index 0000000..48c398c
--- /dev/null
+++ b/tests/parser.spec.ts
@@ -0,0 +1,76 @@
+import { Expr, parse } from '../src/parser'
+
+describe('parser', () => {
+  it('should parse function call', () => {
+    expect(parse('hello()')).toEqual([Expr.Call({ name: 'hello', args: [] })])
+    expect(parse('hello ( wow , foo ) ')).toEqual([
+      Expr.Call({
+        name: 'hello',
+        args: [Expr.Identifier('wow'), Expr.Identifier('foo')],
+      }),
+    ])
+    expect(parse('hello(wow,foo)')).toEqual([
+      Expr.Call({
+        name: 'hello',
+        args: [Expr.Identifier('wow'), Expr.Identifier('foo')],
+      }),
+    ])
+    expect(parse('hello(wow,foo, coolio)')).toEqual([
+      Expr.Call({
+        name: 'hello',
+        args: [
+          Expr.Identifier('wow'),
+          Expr.Identifier('foo'),
+          Expr.Identifier('coolio'),
+        ],
+      }),
+    ])
+    expect(parse('hello(wow)')).toEqual([
+      Expr.Call({ name: 'hello', args: [Expr.Identifier('wow')] }),
+    ])
+  })
+
+  it('should parse sequential function calls', () => {
+    expect(parse('hello(world) foo-doo(bar, baz)')).toEqual([
+      Expr.Call({
+        name: 'hello',
+        args: [Expr.Identifier('world')],
+      }),
+      Expr.Call({
+        name: 'foo-doo',
+        args: [Expr.Identifier('bar'), Expr.Identifier('baz')],
+      }),
+    ])
+  })
+
+  it('should parse string literal', () => {
+    expect(parse(`"hello world toodles \' nice single quote there"`)).toEqual([
+      Expr.LiteralString(`hello world toodles \' nice single quote there`),
+    ])
+
+    expect(parse(` 'hello world toodles \" nice double quote there' `)).toEqual(
+      [Expr.LiteralString(`hello world toodles \" nice double quote there`)]
+    )
+  })
+
+  it('should parse var identifiers', () => {
+    expect(parse(`var(--hello, 'default')`)).toEqual([
+      Expr.Call({
+        name: 'var',
+        args: [Expr.VarIdentifier('--hello'), Expr.LiteralString(`default`)],
+      }),
+    ])
+
+    expect(parse(`calc(var(--hello))`)).toEqual([
+      Expr.Call({
+        name: 'calc',
+        args: [
+          Expr.Call({
+            name: 'var',
+            args: [Expr.VarIdentifier('--hello')],
+          }),
+        ],
+      }),
+    ])
+  })
+})
-- 
cgit v1.3.1