tutorial 1 depending

packages/squiggle-lang/__tests__/ReducerProject/ReducerProject_tutorial_1_multisource_test.res

@@ -0,0 +1,67 @@
+@@warning("-44")
+module InternalExpressionValue = ReducerInterface_InternalExpressionValue
+module Project = ForTS_ReducerProject
+module Bindings = Reducer_Bindings
+
+open Jest
+open Expect
+open Expect.Operators
+
+describe("ReducerProject Tutorial", () => {
+  describe("Multi source", () => {
+    /*
+Case "Running multiple sources"
+*/
+    test("Chaining", () => {
+      let project = Project.createProject()
+      /* This time let's add 3 sources and chain them together */
+      Project.setSource(project, "source1", "x=1")
+
+      Project.setSource(project, "source2", "y=2")
+      /* To run, source2 depends on source1 */
+      Project.setContinues(project, "source2", ["source1"])
+
+      Project.setSource(project, "source3", "z=3")
+      /* To run, source3 depends on source2 */
+      Project.setContinues(project, "source3", ["source2"])
+
+      /* Now we can run the project */
+      Project.runAll(project)
+
+      /* And let's check the result and bindings of source3 */
+      let result3 = Project.getResult(project, "source3")
+      let bindings3 = Project.getBindings(project, "source3")
+
+      (
+        result3->InternalExpressionValue.toStringOptionResult,
+        bindings3->InternalExpressionValue.IEvBindings->InternalExpressionValue.toString,
+      )->expect == ("Ok(())", "@{x: 1,y: 2,z: 3}")
+    })
+
+    test("Depending", () => {
+      /* Instead of chaining the sources, we could have a dependency tree */
+      /* The point here is that any source can depend on multiple sources */
+      let project = Project.createProject()
+
+      /* This time source1 and source2 are not depending on anything */
+      Project.setSource(project, "source1", "x=1")
+      Project.setSource(project, "source2", "y=2")
+
+      Project.setSource(project, "source3", "z=3")
+      /* To run, source3 depends on source1 and source3 together */
+      Project.setContinues(project, "source3", ["source1", "source2"])
+
+      /* Now we can run the project */
+      Project.runAll(project)
+
+      /* And let's check the result and bindings of source3 */
+      let result3 = Project.getResult(project, "source3")
+      let bindings3 = Project.getBindings(project, "source3")
+
+      (
+        result3->InternalExpressionValue.toStringOptionResult,
+        bindings3->InternalExpressionValue.IEvBindings->InternalExpressionValue.toString,
+      )->expect == ("Ok(())", "@{x: 1,y: 2,z: 3}")
+    })
+  })
+})